CN108348996A - Steel treatment equipment and steel treatment method - Google Patents
Steel treatment equipment and steel treatment method Download PDFInfo
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- CN108348996A CN108348996A CN201680063977.5A CN201680063977A CN108348996A CN 108348996 A CN108348996 A CN 108348996A CN 201680063977 A CN201680063977 A CN 201680063977A CN 108348996 A CN108348996 A CN 108348996A
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- Prior art keywords
- dam
- main body
- molten steel
- steel
- feed region
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
- B22D11/118—Refining the metal by circulating the metal under, over or around weirs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Steel treatment method the present invention relates to steel treatment equipment and applied to the steel treatment equipment, the equipment include：The inside of main body, main body is open upwards and main body has the tapping hole being formed at the bottom part of main body；Fixed dam, fixed dam extend along the width direction of main body and are arranged to contact with the bottom part of main body and longitudinal two side walls；Dam is controlled, control dam extends along the width direction of main body and is arranged to be spaced apart with the bottom part of main body and longitudinal two side walls；And drive part, drive part are used for move and rotatably support control dam.Disclosed is such steel treatment equipment and steel treatment method：The liquid level that the steel treatment equipment and steel treatment method can control the molten steel for being contained in body interior in the starting stage, intermediate stage and later stage of processing according to each section.
Description
Technical field
This disclosure relates to steel treatment equipment and steel treatment method.More specifically, this disclosure relates at such molten steel
Manage equipment and steel treatment method：The steel treatment equipment and steel treatment method can be in processing starting stage, scala media
The liquid level of molten steel in section and later stage by each region to being contained in main body controls.
Background technology
The tundish of continuous casting installation for casting is the device for being continuously injected into steel, such as molten steel from ladle in mold.
Tundish has such function：Storage molten steel simultaneously continues the specific period, to keep temperature and when extending the stop of molten steel
Between, to contribute to the field trash in molten steel to float and separation.In addition, tundish tool has the capability that：Continuously replacing
While ladle, molten steel is continuously supplied to mold, simultaneously continuously executes continuous casting processing.
Meanwhile as disclosed in following patent documents, in order to make inclusion floating and be contained in tundish
Molten steel detaches, and gas is usually injected into tundish, or applies magnetic field into tundish to induce flowing up for molten steel, or
Molten steel is passed through slag by person in the form of drop, or improves the shape on the dam and weir that are mounted on inside tundish to increase molten steel
Retention time.
However, in above-mentioned conventional method, only when the molten steel liquid level inside tundish is maintained at certain liquid level,
Field trash can just float and be detached with the molten steel inside tundish.For example, being located at the molten steel inside tundish wherein
In the starting stage and intermediate stage and later stage of the relatively low processing of liquid level, it is difficult to will be pressed from both sides with above-mentioned usual manner
Sundries is detached with the molten steel being contained in tundish.
Therefore, field trash, which still adulterates, is that the wherein molten steel handled starts to be fed into life in the starting stage in tundish
In the slab of production, doping be that the wherein ladle handled is replaced and new molten steel starts the intermediate stage for being provided to tundish
In the slab of middle production and doping is in the later stage that the remaining molten steel wherein used in tundish handled completes processing
In the slab of production.Therefore, the slab generated in the starting stage of processing, intermediate stage and later stage may not have the phase
It the quality of prestige and may be discarded.
Patent document 1：KR10-2014-0085127A
Patent document 2：KR10-2013-0076187A
Patent document 3：KR10-2013-0127247A
Patent document 4：KR10-2013-0047136A
Invention content
Technical purpose
Present disclose provides a kind of steel treatment equipment and steel treatment method, the steel treatment equipment and steel treatment side
Method can control the liquid level of the molten steel positioned at body interior based on region.
Present disclose provides a kind of steel treatment equipment and steel treatment method, the steel treatment equipment and steel treatment side
Method can locally increase molten steel liquid level in the starting stage, intermediate stage and later stage of processing.
Present disclose provides a kind of steel treatment equipment and steel treatment method, the steel treatment equipment and steel treatment side
Method can rapidly increase the molten steel liquid level of shield nozzle side in the starting stage of processing, and thus do sth. in advance the injection of flux
Time.
Present disclose provides a kind of steel treatment equipment and steel treatment method, the steel treatment equipment and steel treatment side
Remaining molten steel can be moved to tapping hole side by method in the intermediate stage of processing and later stage, attached positioned at tapping hole to ensure
The amount of close residual molten steel.
Present disclose provides a kind of steel treatment equipment and steel treatment method, the steel treatment equipment and steel treatment side
Method can reduce the index of the field trash in the slab produced in the starting stage, intermediate stage and later stage of processing.
Technical solution
Include according to the steel treatment equipment of embodiment of the present disclosure：Main body, the main body have inner space, open
Top and bottom define tapping hole in the bottom；Fixed dam, fixed dam extend along the width direction of main body and are mounted to both
It contacts with the bottom of main body and is contacted with the two side walls of the length direction of main body；Dam is controlled, control dam is along the width side of main body
To extension；And drive part, drive part are used for move and rotatably support control dam.
Steel treatment equipment may include stop part, and stop part is separately mounted to the two side walls of the length direction of main body
On, wherein fixed dam is arranged between stop part and tapping hole.
Steel treatment equipment may include residual molten steel mouth, which is defined as passing through fixed dam along its length
Low portion.
Steel treatment equipment may include control section, and control section is used to control the operation of drive part, so that control
Dam is moved into along the length direction of main body and the inner space of main body is divided into feed region and discharge areas and by feed region
It is isolated from each other with discharge areas.
Control dam in the direction of the width can be sized to so that installation stop part position at control dam with
The two side walls of the length direction of main body are spaced apart.
Can be sized to so that having controlled dam both at the fixed dam location of installation in the direction of the width on control dam
It contacts with the bottom of main body and is contacted with the two side walls of the length direction of main body.
Control can be sized to so that controlling the width on dam at the position of installation stop part for the width direction on dam
Two lateral edges in direction are contacted or are stacked with stop part respectively.
Steel treatment equipment may include protruding portion, which dashes forward on the low portion of a side on control dam
Go out, wherein there is protruding portion molten steel to load top surface.
Each stop part in stop part can extend along the short transverse of main body and can dash forward in the width direction
Go out.
Fixed dam may include multiple fixed dams, wherein fixed dam is separated from each other in the longitudinal direction, and fixed dam
Around main body center portion setting and toward each other, wherein limited in the region crossed over from each fixed dam towards tapping hole
Surely there is discharge areas, and feed region is being defined in the region that tapping hole is crossed over from each fixed dam.
Multiple control dams toward each other are provided in feed region, wherein phase each other is provided in feed region
To multiple stop parts.
Include according to the steel treatment method of embodiment of the present disclosure：Provider, main body have inner space, open wide
Top and bottom, define tapping hole in the bottom, wherein inner space is via the multiple dams received in the interior space
And it is divided into feed region and discharge areas；Feed region and discharge areas are kept apart using the multiple dam；By molten steel
Supplied to feed region；Feed region and discharge areas are communicated with each other using the multiple dam；And using the multiple
Dam keeps apart discharge areas with feed region, and the liquid of the molten steel in discharge areas is controlled using the multiple dam
Position.
Feed region is communicated with each other with discharge areas and may include：Using positioned at the discharge areas being connected to feed region
In molten steel carry out block.
The liquid level of molten steel that control is located in discharge areas may include：Using positioned at the discharge kept apart with feed region
Remaining molten steel in region carrys out block.
The liquid level of molten steel that control is located in discharge areas may include：Using positioned at the discharge kept apart with feed region
Remaining molten steel in region carrys out block；And subsequent molten steel is supplied in feed region.
Steel treatment method can by subsequent molten steel be supplied in feed region after include：Use the multiple dam
Feed region and discharge areas are communicated with each other and subsequent molten steel is supplied to discharge areas；It will be arranged using the multiple dam
Region is put to keep apart with feed region and control the liquid level of the molten steel in discharge areas；And using be located at feed region every
Remaining molten steel in the discharge areas left carrys out block.
Advantageous effects
Embodiment of the present disclosure can control the liquid level of the molten steel positioned at body interior based on region.In addition, this public affairs
The embodiment opened can locally increase molten steel liquid level in the starting stage, intermediate stage and later stage of the processing.Also
It is to say, embodiment of the present disclosure can rapidly increase the molten steel liquid level of shield nozzle side in the starting stage of processing, and
Thus the injection length of flux has been done sth. in advance.Embodiments of the present invention can make residue in the intermediate stage of processing and later stage
Molten steel be moved to tapping hole side, with ensure be located at tapping hole near remaining molten steel amount.
In this way, embodiment of the present disclosure can reduce the starting stage, intermediate stage and later stage in the processing
The index of field trash in the slab generated in stage.
For example, when the disclosure is applied to steel casting continuous casting installation for casting, the inner space of main body is divided into feed region and discharge
Region, and feed region is kept apart using fixed dam and control dam with discharge areas, or the steel in feed region
Water is moved into discharge areas using fixed dam and control dam.Therefore, in the confession where the starting stage of processing, shield nozzle
Answer the molten steel liquid level in region compared with the prior art for can quickly increase.The injection length of flux is compared to existing skill
For art can in advance earlier.In the intermediate stage and later stage of the processing, remaining molten steel can be moved to tapping hole
In the discharge areas at place, and it can ensure that the amount for being located at the remaining molten steel near tapping hole is higher than the minimum of residual molten steel
Amount.
In this way it is possible to reduce the plate produced in the starting stage, intermediate stage and later stage of continuous casting processing
The field trash index of base.
Description of the drawings
Fig. 1 shows the steel treatment equipment according to embodiment of the present disclosure.
Fig. 2 is the diagram according to the major part of the steel treatment equipment of embodiment of the present disclosure.
Fig. 3 is the figure of the major part for illustrating the steel treatment equipment according to the modification of the disclosure.
Fig. 4 is the diagram according to the major part of the steel treatment equipment of embodiment of the present disclosure.
Fig. 5 is the diagram according to the major part of the steel treatment equipment of embodiment of the present disclosure.
Fig. 6 is the diagram according to the operation of the steel treatment equipment of embodiment of the present disclosure.
Fig. 7 illustrates the operation of the steel treatment equipment according to the comparative example of the disclosure.
Fig. 8 is illustrated using according to the steel treatment method of embodiment of the present disclosure and according to the molten steel of comparative example
The curve graph of comparison between the casting result for the continuous casting processing that processing method carries out.
Specific implementation mode
Embodiment of the present disclosure is described in detail now with reference to attached drawing.However, the present disclosure is not limited to following institutes
Disclosed embodiment, but can be implemented with a variety of different configurations.However, providing embodiment of the present disclosure so that originally
Disclosure is complete and the complete knowledge of the present invention is communicated to those skilled in the art.Attached drawing may be amplified or expand
Greatly to show embodiment of the present disclosure, wherein refer to identical element through the identical reference numeral of attached drawing.
Hereinafter, embodiment of the present disclosure will be described in detail with reference to the continuous casting installation for casting of steel mill.However, this public affairs
It opens and can be applied to following various equipment and processing, these equipment and processing are supplied with various melts and melt are maintained at it
In and continue the scheduled time, carry out processing to melt and by melt supplied in subsequent equipment.
Fig. 1 is the schematic diagram according to the steel treatment equipment of embodiment of the present disclosure.(a) in Fig. 2 is according to this public affairs
The enlarged diagram of the main body of the steel treatment equipment for the embodiment opened.(b) in Fig. 2 is according to embodiment of the present disclosure
Steel treatment equipment main body enlarged plan view.Fig. 3 is the main body according to the steel treatment equipment of the modification of the disclosure
Enlarged diagram.
In addition, (a) to (c) in Fig. 4 is the main body for showing the steel treatment equipment according to embodiment of the present disclosure
Inside side cross-sectional view.In this regard, (a) in Fig. 4 is shown at the position for being not provided with stop part along width
Spend the side cross-sectional view of the main body of direction cutting.(b) in Fig. 4 is cutd open in the width direction at the position for being provided with stop part
The side cross-sectional view for the main body cut.(c) in Fig. 4 is to show to have been moved to the position of installation stop part on control dam
When at the position of installation stop part the main body of cutting in the width direction side cross-sectional view.
In addition, (a) to (c) in Fig. 5 is the main body for showing the steel treatment equipment according to embodiment of the present disclosure
Inside vertical view.In this regard, (a) in Fig. 5 is to show bowing in the main body being not provided at the position of stop part
View.(b) in Fig. 4 is the vertical view for showing the main body at the position of installation stop part.(c) in Fig. 4 is to show
The vertical view of main body when controlling dam and having been moved to the position of installation stop part at the position of installation stop part.
Meanwhile as shown in Figure 1 to Figure 3, according to embodiment of the present disclosure and modification, control dam relative to stop part from
Tapping hole is pressed against stop part.However, control dam is not limited to above-mentioned position relative to contact-pressure position of stop part.For example, control
It dam processed can be from the opposite side relative to stop part of tapping hole close to stop part.Therefore, control dam can be by molten steel quilt
It will be dispersed to stop part side positioned at the pressure portion of the molten steel of body interior while being continuously injected into main body and more stable
Ground controls the flowing of molten steel.
Referring to Fig.1, Fig. 2, Fig. 4 and Fig. 5, to being retouched in detail according to the steel treatment equipment of embodiment of the present disclosure
It states.
Steel treatment equipment according to embodiment of the present disclosure may include transport box 10, first jet 20, main body
30, second nozzle 40, mold 50, dam unit 60, drive part 70 and control section 80.This steel treatment equipment can be applied
In various processing, such as include the continuous casting processing to identical or different grade, in the continuous casting processing, in transport box 10 by more
With previous molten steel there is the subsequent molten steel of identical or different ingredient to be given in main body 30 while changing, and then
Molten steel is casting continuously to form slab.
Transport box 10 may include ladle.Transport box 10 is, for example, the drum ladle being open upwards inside it.Fire resisting
Material is configured so that molten steel M is accommodated in container 10 in container 10.Transport box 10 is movably disposed
30 top of main body.The molten steel M that container 10 is used to will be received in container is supplied to main body 30.It could be formed with across transport box
The collector nozzle (not shown) of a part for 10 bottom.The low portion of collector nozzle can be connected to first jet
20。
First jet 20 may include shield nozzle.For example, first jet 20 is by being arranged the side in the outside of main body 30
Operating parts (not shown) support in a movable manner.First jet 20 is attached on the following side for being formed in transport box 10
Collector nozzle so that nozzle 20 can be connected to transport box 10.
Main body 30 may include tundish.Main body 30 is arranged in the lower section of transport box 10.Main body 30 is in predetermined shape
For receiving the molten steel M from transport box 10 and molten steel be temporarily stored to the container in main body 30.Main body 30 includes
Steel plate 31 and refractory portion 32, steel plate 31 limits the outer wall of main body 30 and the shape of retainer body 30, refractory portion 32 are formed in
In the inside portion of steel plate 31.Main body 30 can be, and main body 30 symmetrical about the central portion on longitudinal direction (x-axis direction)
Length can be more than main body 30 width.In addition, can (y in the width direction at the central portion of main body 30 in a longitudinal direction
Axis direction) it is prominent.
In addition, the width can reduce from the longitudinally central portion of main body 30 towards the both ends on longitudinal direction.Namely
It says, main body 30 is that each end in the end from the center portion on longitudinal direction on longitudinal direction is tapered.
The inside of main body 30 can be open upwards, and can be equipped with covering (not on the top of main body 30
It shows).Inlet is could be formed in the central portion of covering.First jet 20 can be inserted in inlet and be connected to
The inside of main body 30.It could be formed with tapping hole 35 in the bottom of main body 30 33.Tapping hole 35 can be formed in following multiple
At position：The multiple position is spaced apart with two ends on longitudinal direction and is the longitudinal direction (x-axis about main body 30
Direction) on central portion it is symmetrical.
In order to make tapping hole 35 that the molten steel M to be discharged being located inside main body 30 be allowed to pass through tapping hole 35, tapping hole
35 can be formed as in the vertical direction running through near the two side walls 34a extended in the width direction in the side wall of main body 30
The bottom 33 of main body 30.Second nozzle 40 may be mounted at the lower section in tapping hole 35 and mounted on main body 30, and can connect
It is connected to main body 30.
Second nozzle 40 may include immersion nozzle.Second nozzle 40 is the hollow tube passed through for molten steel M.40 edge of nozzle
Short transverse (z-axis direction) extends.The upper part and low portion of nozzle 40 are unlimited, and the inside portion of nozzle 40 can
To be protected by refractory material.Second nozzle 40 can pass through tapping hole 35 to install and be mounted on the lower section of main body 30, to incite somebody to action
The molten steel M being contained in main body 30 is supplied to mold 50.In the side of second nozzle 40, the lock with slide construction can be set
Mouth (gate) (not shown).Sluice gate can adjust the aperture of second nozzle 40 to control the amount such as the molten steel M sprayed.
Mold 50 includes a pair of first plate and a pair of second plate, and the pair of first plate is toward each other and each other in longitudinal side
It is spaced apart in (x-axis direction), the pair of second plate is spaced apart in width direction (y-axis direction) and toward each other simultaneously each other
And it is separately connected the opposite side of the first plate.The upper part and low portion of mold 50 are unlimited.Mold has molten steel M first
The inner space solidified wherein.Mold 50 can be rectangle or rectangular hollow block.Mold 50 is positioned about second
The bottom of nozzle 40.Mold 50 is supplied with the molten steel M for carrying out autonomous agent 30, and by molten steel solidification at blanket, and slab is connected
It is discharged continuously.
In the lower section of mold 50, cooling stations (not shown) can be set.Cooling stations carry out the slab being discharged from mold 50 cold
But and a series of shaping operation is executed.Cooling stations include multiple fan-shaped sections (segment).The multiple fan-shaped section is along predetermined
Direction is continuously provided to form the cooling stations in curved shape or vertical curved shape.Each fan-shaped section in fan-shaped section is all provided with
It is equipped with multiple rollers, the pull of the multiple roller guiding slab.It is provided with nozzle between each of the rollers.Nozzle into slab by noting
Enter cooling water and slab is cooled down.
It hereinafter, will be to being described in detail according to the dam unit of embodiment of the present disclosure.Dam unit 60 can pacify
Mounted in the inside of main body 30 to control the flowing of the steel being contained in main body 30, such as molten steel M.Dam unit 60 can be arranged in phase
Left and right side for the central portion on longitudinal direction (x-axis direction) of main body 30, and can have symmetrical
Shape and structure.
Dam unit 60 may include：Fixed dam 61, fixed dam 61 are mounted in the width direction (y-axis direction) of main body 30 simultaneously
And in the bottom 33 with main body 30 at the position that tapping hole 35 is spaced apart with the central portion on the longitudinal direction of main body 30
It is contacted with longitudinal side wall 34b；Residual molten steel mouth 62, residual molten steel mouth 62 correspondingly pass through the lower part of fixed dam 61 along the longitudinal direction
Partly formed；Dam 63 is controlled, control dam 63 extends along the width direction of main body 30；And stop part 64, stop part 64 are distinguished
On the longitudinal side wall 34b at the opposite side of fixed dam 63 mounted on main body 30 of each tapping hole 35.
Fixed dam 61 is made of refractory material and extends along the width direction of main body 30.Fixed dam can be formed as vertical
To on direction with predetermined thickness and in width direction and short transverse the plate with predetermined area shape.Fixed dam can be with
It is spaced apart with stop part 64 close to tapping hole 35 and at the low portion of main body 30.Fixed dam 61 can make to pass through
The molten steel M that control dam 63 is led to the following side of the inside of main body 30 is increased.It the upper end of fixed dam 61 can be away from main body 30
The constant height in bottom 33 so that flowing up for molten steel M is promoted and the flow rate of molten steel M (flux) becomes institute
The flow rate needed.Meanwhile as the height of fixed dam 61 increases, flowing up for molten steel M is relatively suppressed, and with fixation
The height on dam reduces, and the flow rate of molten steel M relatively increases.
Fixed dam 61 can have such as two fixed dams 61 of multiple fixed dams 61, and the multiple fixed dam is such as with phase each other
To mode be spaced apart along the longitudinal direction with the central portion of main body 30.The inside of main body 30 can be by being used to divide fixed dam 61
It is divided into such as mounting structure of feed region A and discharge areas B and is divided into feed region A and discharge areas B.For example, for
Answer region A that can be formed in the inside of fixed dam 61, and discharge areas B can be formed in the outside of fixed dam 61.
In this regard, the inside for being formed with feed region A of fixed dam 61 can be tapping hole 35 relative to solid
Determine the opposite side on dam 61.In addition, the outside for being formed with discharge areas B of fixed dam 61 can be that surrounding for tapping hole 35 is solid
Determine the region of the side on dam 61.
In feed region A, multiple stop parts 64 toward each other, such as two stop parts 64 can be set.Correspondingly,
In feed region A, multiple control dams 63 toward each other, such as two control dams 63 can be installed.
Residual molten steel mouth 62 can be formed as passing through the low portion of fixed dam 61 along the longitudinal direction and can be with main body
30 bottom 33 contacts.Via residual molten steel mouth 62, the molten steel M being located in the inner underside portion of main body 30 can be from feed region A
It is moved to discharge areas B.
Control dam 63 is made of refractory material and extends along the width direction of main body 30.Dam 63 can be formed as in longitudinal direction
On direction with certain thickness and in width direction and short transverse the plate with one fixed width shape.Dam 63 is controlled to be arranged
In the feed region A of main body 30.Control dam 63 can be supported by drive part 70 and can respectively along the longitudinal direction, width
Direction and short transverse movement, and can be rotated around the axis in short transverse.
The width on control dam 63 is arranged so as to control the longitudinally opposed side wall with main body 30 in the direction of the width of dam 63
34b is spaced apart, to prevent control dam 63 at the position for installing stop part 64 or when moving and rotate in feed region A and
Main body 30 carries out constructive interference.The width in the direction of the width on control dam 63 to control dam 63 in the position of installation fixed dam 61
The place of setting is contacted with the two side walls 34b of the bottom 33 of main body 30 and longitudinal direction.
Therefore, control dam 63 can move freely through and rotate in the feed region A of main body 30, without with main body 30
Collision.Control dam 63 it is mobile to the installation site of fixed dam 61 from feed region A and with the bottom of fixed dam 61 and main body 30
Both 33 and two longitudinal side wall 34b are in close contact, and thus keep apart feed region A and discharge areas B.
In addition, the width in the direction of the width on control dam 63 makes two longitudinal side walls for controlling dam 63 and main body 30
34b is spaced apart.The width in the direction of the width on control dam 63 can make in the direction of the width two sides for controlling dam 63
Edge is contacted or is stacked with stop part 64 at the position of installation stop part 64.
In addition, the height on control dam 63 to control the position that dam 63 is moved to installation stop part 64 from the upside of main body 30
Set, and therefore in the direction of the width two lateral edges and the stop part 64 on control dam 63 be in close contact so that：Control dam
63 upper end is positioned to the surface level higher than molten steel M, and controls the lower end on dam 63 and the bottom 33 of main body 30 and separate.
Therefore, control dam 63 is in close contact with stop part 64, such as use as weir.Therefore, control dam 63 guiding whereabouts, quilt
It is received in main body 30 and is directed to towards the inner underside portion of main body 30 flowing of the molten steel M of discharge portion B, and by molten steel M
Initial flow strength reduction to required intensity.
Stop part 64 is being mounted on main body at the position that the longitudinally central portion of main body 30 is spaced apart with fixed dam 61
Side-walls longitudinally in each in 30 two longitudinal side wall 34b, and stop part 64 along main body 30 short transverse extend and
It protrudes in the width direction.When control dam 63 is moved to the position of installation stop part 64 and is in close contact with stop part 64, only
Block piece 64 is sealed between control dam 63 and the longitudinal side wall 34b of main body 30.Stop part 64 can be made of refractory material.
The protrusion length in the direction of the width of stop part 64 can be formed as and control dam 63 in the direction of the width
Width is corresponding.The protrusion length in the direction of the width of stop part 64 can be equal to or more than the vertical of control dam 63 and main body 30
Interval between sidewall 34 b.
Meanwhile the position on the longitudinal direction of main body 30 of stop part 64 is such position：The position makes when control
When dam processed 63 is in close contact with stop part 64, energy that molten steel is supplied with stable state and removes field trash from molten steel
Power is maximized.
Drive part 70 can be the mechanically or hydraulically driving device that the pre-position outside main body 30 is for example arranged.
Drive part 70 can be configured to move and rotatably support control dam 63.More specifically, drive part can be with
It is configured to support control dam 63 in a movable manner along the longitudinal direction of main body 30.In addition, drive part 70 can configure
Dam 63 is controlled at tilting with the axis in short transverse or rotatably supporting.
In this regard, above-mentioned inclination controls the angle for controlling the axis in short transverse on dam 63, and right
The angle on control dam 63 carries out that control dam 63 is allow to penetrate into the lesser degree of change in the gap between stop part 64,
And the posture to controlling dam 63 controls.In addition, the angle of axis of the above-mentioned rotation to control dam 63 in short transverse
It is controlled, and the angle for controlling dam 63 is carried out than alloing control dam 63 to penetrate into the gap between stop part 64
The big degree of lesser degree change, and to control dam 63 posture control.
Drive part 70 may include：First drive rod 71, the first drive rod 71 extend along short transverse and to control
The mode that 63 top of dam processed is aligned with the central portion in the direction of the width on control dam 63 is mounted on the upper end on control dam 63；
Second drive rod 72, the second drive rod 72 extend and in an end of width direction in the width direction by short transverse
Upper moveable drive rod 71 supports；Third drive rod 73, third drive rod 73 be formed to move along the longitudinal direction and
It is installed on the other end of the second drive rod 72；And the 4th drive rod 74, the 4th drive rod 74 are connected to third driving
Bar 73 is for the movement on support longitudinal direction.
Meanwhile drive part 70 can with can movably and rotatably support control dam 63 various configurations and side
Formula constructs.The present invention is not specifically limited to above-mentioned configuration and mode.
Control section 80 can be configured to control the operation of drive part 70 according to the tupe being previously entered.Example
Such as, control section 80 makes control dam 63 be moved along the longitudinal direction and short transverse of main body 30, and makes control dam 63 around height
Axis rotation on direction.In this way, control dam can with fixed dam 61 be in close contact or with the confession positioned at main body 30
The baffle plate (stop damper) 64 in the A of region is answered to be in close contact, or control dam can be moved to main body 30 from baffle plate 64
Longitudinal direction on middle position.These operations can in different ways be controlled according to specific processing.Pass through control
The inside of the control of part 80, main body 30 can be divided into feed region A and discharge areas B, the molten steel being located in feed region A
The weld pool surface slag of M can be removed to the center side of main body 30, and the remaining steel in the feed region A of main body 30
Water can be pushed into the sides discharge areas B and can be moved.
Although above referring to Fig.1, Fig. 2, Fig. 4 and Fig. 5 embodiment of the present disclosure is described, the disclosure
It can be constructed in a manner of various including following modifications.
The steel treatment equipment of the modification according to the disclosure is described referring to Fig. 1 and Fig. 3.According to the disclosure
The steel treatment environment division of modification it is similar to the steel treatment equipment of the above embodiment according to the disclosure.Therefore, it saves
The description with the component repeated according to the steel treatment equipment of the above embodiment of the disclosure is omited pair.Being described below will concentrate
In on the component different from embodiment of the present disclosure.
May include according to the dam unit 60' of the steel treatment equipment of the modification of the disclosure：Fixed dam 61', fixed dam 61'
In the width direction (y-axis direction) of main body 30 and close to tapping hole 35 and on the longitudinal direction of main body 30 in
It entreats and is contacted with the bottom 33 of main body 30 and longitudinal side wall 34b at the position of part spaced apart；Residual molten steel mouth 62, residual molten steel mouth
62 correspondingly form across the low portion of fixed dam 61 along the longitudinal direction；Control dam 63, width of the control dam 63 along main body 30
Direction is spent to extend；And stop part 64, stop part 64 are pacified in each tapping hole 35 at the opposite side of fixed dam 63 respectively
On the longitudinal side wall 34b of main body 30.Dam unit 60' can also include protruding portion 65, face of the protruding portion 65 on control dam 63
It is prominent on the low portion of the side of the longitudinally central part of main body 30.In this regard, protruding portion 65 from control dam 63 one
Side lower part part protrudes, and the center portion in the width direction of a following side from control dam 63 protrudes.
Protruding portion 65 can be in the shape of block.The block includes：Top surface, top surface extend with length direction in the width direction
And intersect with a side on control dam 63；Inclined surface, inclined surface is from the side of the width direction of top surface to tilt down
Mode extend and with control dam 63 lower end contact；And vertical face, vertical face from the length direction of top surface two
Side extends and tangent with the width direction end of the width direction end of top surface and inclined surface in a manner of vertically downwards.It is prominent
Go out slag or flux that portion 65 can be removed by using top surface and remove the predetermined amount formed on molten steel M weld pool surfaces
(flux).In this regard, the top surface of protruding portion 65 can be formed to act as loading the plane on surface.In this case, may be used
To remove slag or flux from molten steel by loading on surface by making at least one of slag and flux be deposited on.It is alternative
Ground, protruding portion 65 may be configured so that top surface is open upwards and forms loading space in the top surface.At this
It, can be by the way that at least one of slag and flux to be accommodated in the inside of protruding portion 65 via open top surface in the case of kind
Slag or flux are removed in loading space and from molten steel.
(a) to (e) in Fig. 6 is the process for the operation for illustrating the steel treatment equipment according to embodiment of the present disclosure
Figure.In this regard, (a) in Fig. 6 is to show molten steel being supplied to the feed region kept apart with the discharge areas B of main body 30
The process chart of the processing of A.(b) in Fig. 6 is to show molten steel being supplied to the supply kept apart with the discharge areas B of main body 30
Region A and reaches certain liquid level and be then injected into and the process chart of the processing that applies flux F.
In addition, (c) in Fig. 6 be show using with the molten steel of the feed region A of the main body 30 discharge areas b connecting into
The process chart of the processing of row casting.(d) in Fig. 6 is shown using the discharge areas B being connect with the feed region A of main body 30
The casting processing that carries out of molten steel during by least one of slag (not shown) and flux F towards the length direction of main body 30
On central portion is mobile and the process chart of processing that removes.In addition, (e) in Fig. 6 is the supply shown using with main body 30
The remaining molten steel for the discharge areas B that region A keeps apart, such as remaining molten steel or residual molten steel are come the process of completing the processing of casting
Figure.
Referring to Fig.1 with (a) to (e) in Fig. 6 to according to the operation of the steel treatment equipment of embodiment of the present disclosure into
Row description.In this regard, by the right-hand side in the left and right sides with reference to the length direction of main body 30 to the position of dam unit 60 and
Operation is described in detail.
First, it as shown in (a) and (b) in Fig. 6, for example, in the starting stage of continuous casting processing, controls dam 63 and consolidates
The close contact of dam 61 is determined, so that the feed region A and discharge areas B of main body 30 keep apart.Hereafter, molten steel M is injected into main body
In 30.In this regard, molten steel M can be only injected into the feed region A of main body 30, to promptly improve molten steel liquid level.This
Afterwards, the molten steel liquid level of main body 30 is immersed in steel higher than the height of the end of first jet 20, the thus end of first jet 20
In water M.Therefore, flux F is rapidly injected into main body 30 and is applied to weld pool surface, so that preventing steel
Water M is promptly reoxidized.
Hereafter, when the supply of molten steel M continues and the molten steel liquid level of main body 30 reaches predetermined fluid level, control dam 63 is to only
Block piece 64 is moved and is increased into and is in close contact with stop part 64.During the process, through the formation of control dam 63 and main body
Space between 30 bottom surface 33 and the sky being formed between control dam 63 and the two side walls 34b of the length direction of main body 30
Between, molten steel M and flux F can be moved and be fed into discharge areas B.
In the process above, it is based on stop part 64, control dam 63 can closely connect from 40 side of second nozzle with stop part 64
It touches or is in close contact from 20 side of first jet and stop part 64.
Meanwhile it is mobile to 64 side of stop part on control dam 63 and before being in close contact with stop part, control dam 63 can be with
Axis in short transverse tilts or rotates predetermined angular.Therefore, the length for being formed in control dam 63 and main body 30 can be adjusted
Spend direction two side walls 34b between space size, and molten steel M and flux F can be more stable it is mobile.
Then, when the molten steel M supplied to discharge areas B reaches predetermined fluid level, casting is proceeded by.Using be located at
During the casting processing that molten steel M in the discharge areas B of feed region A connections is carried out, as shown in (c) in Fig. 6, main body 30
In molten steel can keep being in work liquid level.In this regard, control dam 63 is used as weir in the upper area of main body 30, and
The flow strength of molten steel M is controlled to target strength while molten steel M to be directed to the inner underside portion of main body 30.
Hereafter, when the molten steel liquid level supplied in completion and main body 30 as molten steel M into main body 30 reduces, in Fig. 6
(d) shown in, control dam 63 towards 20 side of first jet move.In this regard, control dam 63 can be by control dam 63
Axis in short transverse makes control dam advance and move between stop part 64 in the state of tilting or rotating predetermined angular.
In this way, control dam 63 can easily advance between stop part 64, without by the backstop in main body 30
The constructive interference of part 64.During the process, the slag or flux formed on the bath surface of molten steel M can be towards main body 30
Central portion movement.As the resistant function to the effect as a result, being in relative clean shape at the bottom of main body 30
The molten steel of state can be moved to the sides discharge areas B.In this regard, the slag and flux moved towards the center side of main body 30 stacks
It is on the top surface for controlling the side protruding portion 65 outstanding on dam 63, to be removed from molten steel M weld pool surfaces.
Hereafter, in the intermediate stage of continuous casting processing or later stage --- in the intermediate stage or later stage, main body 30
Internal molten steel liquid level is gradually lowered and consequently reaches predetermined fluid level --- in, as shown in (e) in Fig. 6, control dam
63 move and drop to 61 side of fixed dam.The molten steel being located at as a result, in feed region A can be moved to discharge areas B.Hereafter,
It controls dam 63 to be in close contact with fixed dam 61, and can be with supply area with the discharge areas B such as elevated molten steel liquid level
Domain A keeps apart.Therefore, the molten steel liquid level h in the sides discharge areas BBThe molten steel liquid level h that can be higher than in the sides feed region AA.This
Afterwards, it is cast using the remaining molten steel in the discharge areas B kept apart with feed region A.
By this method, in the intermediate stage of continuous casting processing or later stage, by making the molten steel liquid level in discharge areas B
Higher than the molten steel liquid level in feed region A, it can be ensured that the height of the remaining molten steel near tapping hole is higher than to prevent
The height of slag flowing, to improve the quality of the slab manufactured in the intermediate stage of processing or later stage.
(a) to (d) in Fig. 7 is the process for the operation for showing the steel treatment equipment according to the comparative example of the disclosure
Figure.Referring to figure 6 and figure 7, with according to the operation of the steel treatment equipment of embodiment of the present disclosure associatedly to according to the disclosure
The operation of steel treatment equipment of comparative example be described.
Such as (a) to (d) in Fig. 7, in the steel treatment equipment according to the comparative example of the disclosure, the reality with the disclosure
It applies unlike mode, lower part dam 91 and top dam 92 is fixedly mounted in main body 30.For example, as conventional dam structure that
Sample, top dam 92 are fixedly mounted at the position that second nozzle 40 is spaced apart with first jet 20 in main body 30
In upper part, and lower part dam 91 is fixedly mounted in main body 30 at the position that 40 side of second nozzle is spaced apart with top dam 92
Interior low portion at.
In the comparative example of the disclosure, the initial rank that is supplied to since the wherein molten steel of continuous casting processing in main body 30
Section (referring to (a) and (b) in Fig. 7) completes the later stage of casting processing (referring to figure to continuous casting processing using remaining molten steel
In (c) and (d)), whole region of the molten steel liquid level in main body 30 in main body 30 is constant.Particularly, it is handling
Later stage in, the molten steel liquid level h' at first jet 20AWith the molten steel liquid level h' at second nozzle 40BBe formed as being in phase
At same height.In this way, it in the comparative example of the disclosure, can not locally adjust at first jet 20 respectively
Molten steel liquid level at 40 side of molten steel liquid level and second nozzle.Particularly, the height for being located at the remaining molten steel near tapping hole cannot
It is enough individually to adjust.
In this way, in the comparative example of the disclosure, since position of the dam in main body is fixed, even
The molten steel flow and molten steel liquid level cast in the starting stage and later stage of processing do not control in the desired manner.Namely
Say, since when first jet 20 is opened, molten steel is placed in the entire inside of main body 30, therefore with the embodiment party of the disclosure
Formula is compared, and the rising of molten steel liquid level is delayed by, to delay flux injection.Therefore, comparative example cannot promptly inhibit or
Prevent being reoxidized caused by due to being contacted with air for molten steel.In addition, in the later stage of continuous casting processing, molten steel liquid level is in master
The entire inside of body 30 all reduces, this is difficult to the minimum for maintaining residual molten steel, thus reduces the yield of molten steel.
In contrast, in embodiment of the present disclosure, as described above, the molten steel liquid in feed region A in main body 30
Position can differently be controlled with the molten steel liquid level in discharge areas B.Therefore, which can be in the initial rank of processing
Do sth. in advance flux injection timing in section.Furthermore, it is possible to ensure to be located near tapping hole in the intermediate stage of processing or later stage
Residual molten steel amount be residual molten steel minimum, so that it is guaranteed that the quality of slab and practical yield rate.
Fig. 8 is to show to be utilized using according to the steel treatment method of embodiment of the present disclosure and according to comparative example
Steel treatment method carry out continuous casting processing obtained by block in field trash index curve graph.
In this regard, oxygen content contained in the field trash exponential representation slab in Fig. 8.In the initial rank of continuous casting processing
Section prepares the slab cast using molten steel for example, in charging (Ch) for the first time, obtains the sample of the slab for each length,
And it analyzes the oxygen content of each sample and carries out digital quantization.Oxygen content in analyzing slab and the side for exporting field trash index
Method is well-known technology, and therefore its detailed description will be omitted.
Reference Fig. 8, the slab produced in the continuous casting processing according to the steel treatment equipment of embodiment of the present disclosure
Field trash index is generally lower than the plate prepared in the continuous casting processing according to the steel treatment equipment of the comparative example of the disclosure
The field trash index of base.This is because：In embodiment of the present disclosure, in the starting stage of continuous casting processing, feed region
In molten steel liquid level promptly increase, and molten steel reoxidize be suppressed or prevent.On the other hand, this is because：In this public affairs
In the comparative example opened, the starting stage climbing speed of molten steel liquid level is more initial than the molten steel liquid level in embodiment of the present disclosure
Stage climbing speed is slow so that flux injection timing is also late, and therefore unlike embodiment of the present disclosure, this compares
Example will not promptly inhibit reoxidizing for molten steel.
Hereinafter, by referring to figs. 1 to Fig. 6 to having used the steel of the steel treatment equipment according to embodiment of the present disclosure
Method for treating water is described.In this regard, hereinafter, omit or be briefly described according to embodiment of the present disclosure or change
The repeating part described above of the steel treatment equipment of type.
May include according to the steel treatment method of embodiment of the present disclosure：Provider, receive in the main body have it is more
A dam, wherein the tapping hole that main body has inner space and open top and is limited in the bottom of main body, wherein dam
The inside of main body is divided into feed region and discharge areas；Feed region is isolated with discharge areas using the multiple dam
It opens；Molten steel is supplied to feed region；Feed region is connected to discharge areas using the multiple dam；And described in use
Multiple dams keep apart discharge areas with feed region, and control the molten steel liquid in discharge areas using the multiple dam
Position.
First, this method includes：Provider 30, and being received in main body 30 has multiple dams, wherein the main body has internal empty
Between and open top and the tapping hole 35 that is limited in the bottom 33 of main body 30, wherein the inside of main body 30 is divided by dam
Feed region A and discharge areas B.Hereafter, control section 80 controls drive part 70, so that control dam 63 is tight with fixed dam 61
Contiguity is touched, to keep apart feed region A and discharge areas B.
Then, transport box 10 is placed on the feed region A of main body 30, and molten steel is supplied to the confession of main body 30
It answers in the A of region.Therefore, molten steel M can be only supplied to feed region A, and molten steel liquid level can be increased promptly.
That is, by using control dam 63, the Injection Space of molten steel can be reduced in the starting stage.Therefore, steel
Aqueous position can with smaller amount and more quickly reach the lower end of first jet 20 compared to regular situation.
When molten steel liquid level increases more than the end height of first jet 20, flux F is applied evenly molten to molten steel
Pool surface is rapidly to prevent molten steel from being reoxidized.In this regard, since the starting stage applying zone of flux F can be compared to
Smaller for regular situation, therefore molten steel bath surface can get more quickly to protection.
As noted previously, as the application time of flux F is done sth. in advance and is thus achieved to the inhibition for reoxidizing reaction,
Therefore compared with prior art, can to discharge areas B supply because to be in due to reoxidizing the inhibition of reaction clean conditions molten steel.
Therefore, it is possible to reduce incorporation of the oxide inclusion in the slab that the starting stage of continuous casting processing produces, so that really
Protect the quality of starting stage slab.
Hereafter, when molten steel liquid level rises at predetermined altitude is reached, control dam 63 moves simultaneously up and away from fixed dam 61
And it is separated with fixed dam 61.This allows feed region A and discharge areas B to communicate with each other.Hereafter, control dam 63 and stop part 64 are tight
Contiguity is touched, to induce MOLTEN STEEL FLOW to the following side of main body 30.When the molten steel supplied to discharge areas B reaches certain liquid level,
This method begins to use the molten steel in the discharge areas B being connected to feed region A to carry out block.
In the process above, it is based on stop part 64, control dam 63 can closely connect in 40 side of second nozzle with stop part 64
It touches, or is in close contact in 20 side of first jet and stop part 64.
Hereafter, while the molten steel in main body 30 is held at work liquid level, it is consecutively carried out casting.
When supply of the molten steel into main body 30 is completed, and with the progress of casting, the molten steel liquid level drop in main body 30
It is low.During the process, control dam 63 is moved to 20 side of first jet so that slag is moved on the length direction of main body 30
Central portion.Therefore, the molten steel in clean conditions being located in the lower area of main body 30 is moved towards the sides discharge areas B.This
Afterwards, it is gathered in the slag at the central portion of main body 30 and is loaded in the protruding portion 65 being formed at the low portion on control dam 63
On upper surface, thus slag can be removed from molten steel bath surface and can be removed a certain amount.Therefore, Ke Yiyou
Effect ground inhibits or prevents slag mobile towards the tapping hole side of main body 30 and flow into tapping hole.
When molten steel is completed to the supply of main body 30, the molten steel liquid level in main body 30 is further dropped with the progress of casting
It is low.Therefore, the amount of the remaining molten steel in main body 30 reaches the minimum of residual molten steel.During the process, control dam 63 is being controlled
Dam 63 processed is moved to 61 side of fixed dam in the case of being reduced to predetermined altitude, thus the molten steel in feed region A is moved to discharge
The region sides B.The molten steel liquid level in discharge areas B is controlled as a result,.Hereafter, control dam 63 is in close contact with fixed dam 61, and
And therefore, discharge areas B keeps apart with feed region in the case that molten steel liquid level is raised.
Then, the remaining molten steel in the discharge areas B kept apart with feed region A is continuously fed in mold
And it is cast as slab.When the molten steel liquid level in discharge areas B reaches the molten steel liquid level of the minimum in residual molten steel, continuous casting
Processing is completed.
In this way, before the remaining molten steel amount in main body 30 reaches the minimum of residual molten steel, discharge areas B's
Molten steel liquid level can be increased easily.Therefore, in embodiment of the present disclosure, it can inhibit or clinker is prevented to be introduced into tapping
In mouth 35, and it is hereby ensured that the quality of slab.In addition, as molten steel liquid level increases, continuous casting can continue, to reduce
The amount of residual molten steel at the end of continuous casting processing in main body 30.
Although above to being described in detail according to the steel treatment method of embodiment of the present disclosure, this
It is open to be configured to include following modification in various ways.Hereinafter, to the steel treatment side according to the modification of the disclosure
Method is described.
It can be applied to the continuous casting processing of for example identical or different grade according to the steel treatment method of the modification of the disclosure.
This method may include：Provider, main body, which has, is received in multiple dams in main body, wherein main body have inner space and
Open top and the tapping hole being limited in the bottom of main body, wherein the inside of main body is divided into feed region and row by dam
Put region；Feed region and discharge areas are kept apart using the multiple dam；Molten steel is supplied to feed region；Using institute
Multiple dams are stated to be connected to feed region with discharge areas；And using the multiple dam come by discharge areas and feed region every
It leaves, and the molten steel liquid level in discharge areas is controlled using the multiple dam.
In this regard, controlling the molten steel liquid level of discharge areas can also include：Using positioned at keeping apart with feed region
Remaining molten steel in discharge areas carrys out block and subsequent molten steel is supplied to feed region；Come using the multiple dam
Feed region is connected to discharge areas, and subsequent molten steel is supplied to discharge areas；It will be arranged using the multiple dam
Region is put to keep apart with feed region and control the molten steel liquid level of discharge areas；Using positioned at the row kept apart with feed region
The remaining molten steel put in region carrys out block.
First, steel treatment method includes：Provider 30, and being received in main body 30 has multiple dams, wherein main body has interior
Portion space and open top and the tapping hole 35 being limited in the bottom 33 of main body, wherein dam is by the inside points of main body 30
At feed region A and discharge areas B.Hereafter, control section 80 controls drive part 70 so that control dam 63 and fixed dam 61
It is in close contact, to keep apart feed region A and discharge areas B.
Then, transport box 10 is placed on the feed region A of main body 30, and molten steel is supplied to the confession of main body 30
It answers in the A of region.Therefore, molten steel M can be only supplied in feed region A, and molten steel liquid level can be increased promptly.
That is, by using control dam 63, the Injection Space of molten steel can be reduced in the starting stage.Therefore, steel
Aqueous position can be with smaller amount and more quickly to reach the lower end of first jet 20 compared to regular situation.
When molten steel liquid level increases more than the end height of first jet 20, flux F is applied evenly molten to molten steel
Pool surface, rapidly molten steel to be prevented to be reoxidized.In this regard, since the starting stage applying zone of flux F can be compared
The smaller for regular situation, therefore molten steel bath surface can get more quickly to protection.
Hereafter, when molten steel liquid level rises at predetermined altitude is reached, control dam 63 moves simultaneously up and away from fixed dam 61
And it is separated with fixed dam 61.This allows feed region A and discharge areas B to communicate with each other.Hereafter, it is based on stop part 64, controls dam
63 can be in close contact in 40 side of second nozzle and stop part 64 or are in close contact in 20 side of first jet and stop part 64, with
Induce MOLTEN STEEL FLOW to the following side of main body 30.When the molten steel supplied to discharge areas B reaches certain liquid level, this method starts
Carry out block using the molten steel in the discharge areas B being connected to feed region A.
In this regard, done sth. in advance due to the application time of flux F and thus the inhibition for reoxidizing reaction be achieved,
Therefore compared with prior art, can to discharge areas B supply because to be in due to reoxidizing the inhibition of reaction clean conditions molten steel.
Therefore, the incorporation of the oxide inclusion in the slab produced in the starting stage of continuous casting processing can be reduced, so that can
To ensure the quality of starting stage slab.
Hereafter, while the molten steel in main body 30 is held at work liquid level, it is consecutively carried out casting.
When supply of the molten steel into main body 30 is completed, and with the progress of casting, the molten steel liquid level drop in main body 30
It is low.During the process, control dam 63 is moved to 20 side of first jet, in so that slag is moved on the length direction of main body 30
Centre portion.Therefore, the molten steel in clean conditions being located in the lower area of main body 30 is moved towards the sides discharge areas B.Hereafter, gather
Collect the upper table that the slag at the central portion of main body 30 is loaded in the protruding portion 65 being formed at the low portion on control dam 63
On face, thus slag can be removed from molten steel bath surface and can be removed a certain amount.It therefore, can be effectively
Inhibit or prevents slag mobile towards the tapping hole side of main body 30 and flow into tapping hole.
When supply of the molten steel into main body 30 is completed, the molten steel liquid level in main body 30 is further with the progress of casting
It reduces.Therefore, the amount of the remaining molten steel in main body 30 reaches the minimum of residual molten steel.During the process, dam is controlled
63 are moved to 61 side of fixed dam in the case where controlling dam 63 and being reduced to predetermined altitude, thus the molten steel movement in feed region A
To the sides discharge areas B.The molten steel liquid level in discharge areas B is controlled as a result,.Hereafter, control dam 63 and fixed dam 61 are close
And therefore contact, discharge areas B are kept apart with feed region in the case that molten steel liquid level is raised.
Then, the remaining molten steel being located in the discharge areas B that keeps apart with feed region A is being continuously fed to mold
In and while cast, subsequent molten steel can be supplied to feed region B.In this regard, subsequent molten steel can have with
The identical or different grade of remaining molten steel in the discharge areas B of isolation.
Hereafter, when the molten steel liquid level of the subsequent molten steel in feed region A rises at predetermined altitude is reached, control
It moves up and away from fixed dam 61 and is therefore separated with fixed dam 61 in dam 63.Therefore, feed region A and discharge areas B that
This connection.Thereby, it is possible to will be received in the subsequent molten steel in feed region A to be supplied to discharge areas B.Hereafter, dam 63 is controlled
It is in close contact with stop part 64, to induce MOLTEN STEEL FLOW to the following side of main body 30.It is located at as a result, and is connected to feed region A
Molten steel in discharge areas B be used to be consecutively carried out the casting of slab without interrupting.
When subsequent molten steel is completed to the supply of main body 30, the molten steel liquid level in main body 30 is dropped with the progress of casting
It is low.During the process, control dam 63 is moved to 20 side of first jet so that slag is moved on the length direction of main body 30
Central portion.Therefore, the molten steel in clean conditions being located in the lower area of main body 30 is moved towards the sides discharge areas B.Hereafter,
It is gathered in the slag at the central portion of main body 30 and is loaded in the upper of the protruding portion 65 being formed at the low portion on control dam 63
On surface, thus slag can be removed from molten steel bath surface and can be removed a certain amount.It therefore, can be effective
Ground inhibits or prevents slag mobile towards the tapping hole side of main body 30 and flow into tapping hole.
When subsequent molten steel is completed to the supply of main body 30, molten steel liquid level in main body 30 with the progress of casting and into
One step reduces.Therefore, the amount of the remaining molten steel in main body 30 reaches the minimum of residual molten steel.During the process, dam is controlled
63 are moved to 61 side of fixed dam, and the molten steel in feed region A in the case where controlling dam 63 and being reduced to predetermined altitude
It is moved to the sides discharge areas B.The molten steel liquid level for being located at the subsequent molten steel in discharge areas B as a result, is increased.Hereafter, it controls
Dam 63 processed is in close contact with fixed dam 61 so that molten steel liquid level increases.In this state, discharge areas B and feed region every
It leaves.
Then, it will be continuously supplied into mold simultaneously positioned at the remaining molten steel of the discharge areas B kept apart with feed region A
It is cast as slab.When the molten steel liquid level in discharge areas B reaches the molten steel liquid level of the minimum in residual molten steel, at continuous casting
Reason is completed.
In this way, according to embodiment of the present disclosure, the flux injection delay in can preventing initial casting from handling,
To make the molten steel in main body minimally be exposed to air, thus prevent molten steel from reoxidizing.Therefore, it can effectively improve
The quality of starting stage slab.In addition, in the later stage of processing, molten steel liquid level can locally rise to prevent slag logical
It crosses the vortex being formed near tapping hole and enters tapping hole.Remaining molten steel in main body can be reduced at the end of continuous casting processing
Minimum.In different grades of continuous casting processing, it is possible to reduce mixture.
In this way, according to embodiment of the present disclosure, it can be ensured that the starting stage of continuous casting processing and later stage
In slab quality, and the yield rate of slab can be ensured while smoothly executing continuous casting processing.In addition, different etc.
During the continuous casting processing of grade, the mixture in slab can be minimized.
It should be pointed out that the above embodiment of the disclosure is for explaining the disclosure rather than for limiting this public affairs
It opens.The disclosure will in various different formats be implemented in the range of claim and equivalent technologies thought.Those skilled in the art
It will be appreciated that the disclosure can allow various embodiments within the scope of the technical idea of the present disclosure.
Claims (16)
1. a kind of steel treatment equipment, including：
Main body, the main body have inner space, open top and bottom, tapping hole are defined in the bottom；
Fixed dam, the fixed dam extend along the width direction of the main body and are mounted to both bottoms with the main body
Contact is contacted with the two side walls of the length direction of the main body again；
Dam is controlled, the control dam extends along the width direction of the main body；And
Drive part, the drive part are used for move and rotatably support the control dam.
2. steel treatment equipment according to claim 1, including stop part, the stop part are separately mounted to the main body
The length direction two side walls on, wherein the fixed dam is arranged between the stop part and the tapping hole.
3. steel treatment equipment according to claim 1, including residual molten steel mouth, the residual molten steel mouth is defined as along institute
State the low portion that length direction passes through the fixed dam.
4. steel treatment equipment according to claim 1, including control section, the control section is for controlling the drive
The operation of dynamic part so that the control dam along the length direction of the main body move and by the inside of the main body
Space is separated into feed region and discharge areas and the feed region and the discharge areas is isolated from each other.
5. steel treatment equipment according to claim 2, wherein the size setting in the direction of the width on the control dam
At making at the position for installing the stop part between the control dam and the two side walls of the length direction of the main body
It separates.
6. according to the steel treatment equipment described in one in claim 1,2 and 5, wherein it is described control dam in width side
It is upward be dimensioned so that install at the fixed dam location control dam both with the bottom of the main body
Contact is contacted with the two side walls of the length direction of the main body again.
7. according to the steel treatment equipment described in one in claim 2 and 5, wherein the width direction on the control dam
Be dimensioned so that two lateral edges of the width direction on the control dam at the position for installing the stop part respectively with
The stop part contact or stacked.
8. steel treatment equipment according to claim 1, including protruding portion, the protruding portion is in control dam one
It is prominent on the low portion of side, wherein there is the protruding portion molten steel to load top surface.
9. steel treatment equipment according to claim 2, wherein each stop part in the stop part is along the master
The short transverse of body extends and is protruded along the width direction.
10. steel treatment equipment according to claim 2, wherein the fixed dam includes multiple fixed dams, wherein institute
It states fixed dam to be separated from each other in the length direction, and the fixed dam around the central portion of the main body is arranged and that
This is opposite,
Wherein, discharge areas is defined in the region crossed over from each fixed dam towards the tapping hole, and from each solid
Determine dam and defines feed region in the region that the tapping hole is crossed over.
11. steel treatment equipment according to claim 10, wherein be provided with toward each other in the feed region
Multiple control dams, wherein multiple stop parts toward each other are provided in the feed region.
12. a kind of steel treatment method, including：
Provider, the main body have inner space, open top and bottom, tapping hole are defined in the bottom,
Wherein, the inner space is divided into feed region and discharge areas via the multiple dams being received in the inner space；
The feed region and the discharge areas are kept apart using the multiple dam；
Molten steel is supplied to the feed region；
The feed region and the discharge areas are communicated with each other using the multiple dam；And
The discharge areas and the feed region are kept apart using the multiple dam, and is controlled using the multiple dam
System is located at the liquid level of the molten steel in the discharge areas.
13. steel treatment method according to claim 12, wherein each other by the feed region and the discharge areas
Connection includes：Carry out block using the molten steel in the discharge areas being connected to the feed region.
14. steel treatment method according to claim 13, wherein control is located at the liquid of the molten steel in the discharge areas
Position includes：Carry out block using the remaining molten steel in the discharge areas kept apart with the feed region.
15. steel treatment method according to claim 12 or 13, wherein control is located at the molten steel in the discharge areas
Liquid level include：
Carry out block using the remaining molten steel in the discharge areas kept apart with the feed region；And
Subsequent molten steel is supplied in the feed region.
16. the subsequent molten steel is being supplied to the feed region by steel treatment method according to claim 15
In after, including：
The feed region and the discharge areas are communicated with each other using the multiple dam, and by the subsequent molten steel
Supplied to the discharge areas；
The discharge areas and the feed region are kept apart using the multiple dam, and controls and is located at the discharge region
The liquid level of molten steel in domain；And
Carry out block using the remaining molten steel in the discharge areas kept apart with the feed region.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2015-0153386 | 2015-11-02 | ||
| KR1020150153386A KR101779153B1 (en) | 2015-11-02 | 2015-11-02 | Apparatus and method for treating molten steel |
| PCT/KR2016/012307 WO2017078336A1 (en) | 2015-11-02 | 2016-10-28 | Molten steel treatment apparatus and method |
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| Publication Number | Publication Date |
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| CN108348996A true CN108348996A (en) | 2018-07-31 |
| CN108348996B CN108348996B (en) | 2020-06-12 |
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| CN201680063977.5A Active CN108348996B (en) | 2015-11-02 | 2016-10-28 | Molten steel treatment apparatus and molten steel treatment method |
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| EP (1) | EP3372326B1 (en) |
| JP (1) | JP6608052B2 (en) |
| KR (1) | KR101779153B1 (en) |
| CN (1) | CN108348996B (en) |
| WO (1) | WO2017078336A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102033629B1 (en) * | 2017-12-05 | 2019-10-17 | 주식회사 포스코 | Continuous casting method and apparatus |
| KR102108162B1 (en) * | 2018-07-04 | 2020-05-08 | 주식회사 포스코 | Continuous casting tundish |
| CA3157515A1 (en) * | 2019-10-17 | 2021-04-22 | Pyrotek, Inc. | Sensor controlled launder flow |
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| US2659120A (en) * | 1951-02-02 | 1953-11-17 | Babcock & Wilcox Co | Apparatus for separating slag from a slag containing molten metal |
| US3831659A (en) * | 1973-01-18 | 1974-08-27 | Jones & Laughlin Steel Corp | Method of dispensing low velocity liquid material for strip casting |
| JPS55128356A (en) * | 1979-03-26 | 1980-10-04 | Kawasaki Steel Corp | Decreasing method for inclusion in molten steel at continuous cast pouring time |
| JPS5695452A (en) * | 1979-12-27 | 1981-08-01 | Nippon Steel Corp | Continuous casting method of dissimilar steel kind |
| KR20030044589A (en) * | 2001-11-30 | 2003-06-09 | 주식회사 포스코 | Tundish dam for guiding molten iron |
| CN102896285A (en) * | 2011-07-29 | 2013-01-30 | 宝山钢铁股份有限公司 | Method and device for continuously casting thin strip |
| KR20130047136A (en) * | 2011-10-31 | 2013-05-08 | 주식회사 포스코 | Tundish |
| KR20150073448A (en) * | 2013-12-23 | 2015-07-01 | 주식회사 포스코 | Apparatus and method for treating molten metal |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5831124B2 (en) * | 2011-10-20 | 2015-12-09 | Ｊｆｅスチール株式会社 | Manufacturing method of high cleanliness steel slab by continuous casting |
| JP5794969B2 (en) * | 2012-10-31 | 2015-10-14 | 株式会社神戸製鋼所 | Continuous casting method |
| KR20140145382A (en) * | 2013-06-13 | 2014-12-23 | 주식회사 포스코 | Apparatus for treating of melting |
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- 2015-11-02 KR KR1020150153386A patent/KR101779153B1/en active IP Right Grant
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- 2016-10-28 CN CN201680063977.5A patent/CN108348996B/en active Active
- 2016-10-28 EP EP16862352.8A patent/EP3372326B1/en active Active
- 2016-10-28 JP JP2018521579A patent/JP6608052B2/en active Active
- 2016-10-28 WO PCT/KR2016/012307 patent/WO2017078336A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2659120A (en) * | 1951-02-02 | 1953-11-17 | Babcock & Wilcox Co | Apparatus for separating slag from a slag containing molten metal |
| US3831659A (en) * | 1973-01-18 | 1974-08-27 | Jones & Laughlin Steel Corp | Method of dispensing low velocity liquid material for strip casting |
| JPS55128356A (en) * | 1979-03-26 | 1980-10-04 | Kawasaki Steel Corp | Decreasing method for inclusion in molten steel at continuous cast pouring time |
| JPS5695452A (en) * | 1979-12-27 | 1981-08-01 | Nippon Steel Corp | Continuous casting method of dissimilar steel kind |
| KR20030044589A (en) * | 2001-11-30 | 2003-06-09 | 주식회사 포스코 | Tundish dam for guiding molten iron |
| CN102896285A (en) * | 2011-07-29 | 2013-01-30 | 宝山钢铁股份有限公司 | Method and device for continuously casting thin strip |
| KR20130047136A (en) * | 2011-10-31 | 2013-05-08 | 주식회사 포스코 | Tundish |
| KR20150073448A (en) * | 2013-12-23 | 2015-07-01 | 주식회사 포스코 | Apparatus and method for treating molten metal |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3372326B1 (en) | 2020-04-15 |
| JP2018535834A (en) | 2018-12-06 |
| KR101779153B1 (en) | 2017-09-18 |
| WO2017078336A1 (en) | 2017-05-11 |
| EP3372326A4 (en) | 2018-09-12 |
| CN108348996B (en) | 2020-06-12 |
| JP6608052B2 (en) | 2019-11-20 |
| EP3372326A1 (en) | 2018-09-12 |
| KR20170051051A (en) | 2017-05-11 |
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