CN202420180U - Slag-tempering composite furnace - Google Patents
Slag-tempering composite furnace Download PDFInfo
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- CN202420180U CN202420180U CN2011204062761U CN201120406276U CN202420180U CN 202420180 U CN202420180 U CN 202420180U CN 2011204062761 U CN2011204062761 U CN 2011204062761U CN 201120406276 U CN201120406276 U CN 201120406276U CN 202420180 U CN202420180 U CN 202420180U
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Abstract
The utility model discloses a slag-tempering composite furnace comprising an electric arc furnace and an electric melting furnace which is arranged below the right side of the electric arc furnace, wherein the electric arc furnace and the electric melting furnace are communicated with each other by virtue of a channel inclining downwards; the electric arc furnace is vertically arranged, a circular furnace chamber is arranged in the furnace, the top part of the furnace chamber serves as the open end, a movable furnace lid covers the open end, and the vertical side wall and the horizontal bottom wall of the electric arc furnace are connected with each other by virtue of a chamfer; and a chamber of the electric melting furnace is in the shape of a horizontal strip and comprises a mixing chamber and a homogenization chamber which are independent from each other at left and right and separated from each other by virtue of a partition wall, a melt flowing hole is formed on the bottom of the partition wall and communicated with the mixing chamber and the homogenization chamber, a melt discharging hole is formed on the bottom of the right end of the homogenization chamber, a heating molybdenum electrode is arranged above the melt discharging hole, and a retaining wall is close to the melt discharging hole, protruded from the bottom of the homogenization chamber and parallel to the partition wall. Compared with the technology of the conventional cupola furnace, the process of the slag-tempering composite furnace causes low energy consumption and less pollution; and compared with the tempering technology of the double arc furnace, the technology of the slag-tempering composite furnace allows tempered products to be mixed fully, the standing homogenization to be through and the discharging flow to be stable so as to facilitate the process in a following working procedure.
Description
Technical field
The utility model relates to the modifier treatment of slag, relates in particular to a kind of modifying device and operating procedure thereof of hot slag.
Background technology
Metallurgy industry will discharge a large amount of hot slags every year, like ironmaking slag, steel-smelting clinker, ferroalloy slag, nonferrous smelting slag, power plant's cyclone combustion chamber slag tap etc.These hot slags are generally handled through hardening or naturally after the cooling, again as the raw material of production mineral wool slab products etc.Consider the quality requirements of mineral wool board goods to melt; Need be with addition of a certain proportion of modified raw material in slag; Thereby the characteristics such as acidity coefficient that change slag promote the class of product; Newly with addition of modified raw material be main mainly with acid particles materials such as quartz sands because the electric conductivity of slag makes moderate progress with the rising of temperature, when electrical conductivity of molten slag property is not enough, also need promote conductive capability with addition of compounds such as a certain proportion of K or Na.Modified material need join in the hot slag at normal temperatures, under 1450 ℃～1600 ℃ high temperature, melts and homogenizing, finally obtains the mixed melt of fusion, and this technical process is called as the slag hardening and tempering process.
Present slag hardening and tempering process generally is that the cold conditions slag that becomes to have certain particle size after utilizing cupola equipment to preprocessing carries out modifier treatment, heat treated is produced mineral wool, and the furnace cupola hardening and tempering process generally comprises following a few step:
The hot slag that at first will come out of the stove is handled through hardening or cooling naturally; The tapping temperature of these slags is all at 1400～1600 ℃; Generally speaking, 1 ton of slag has 1600～1800MJ heat, is about as much as the heat that is produced after the completing combustion of 55～61kg standard coal; Belong to high-quality residual heat resources, have very high recovery value.But refrigerating work procedure had both been wasted heat energy, also produced secondary pollutions such as waste water, and added value of product is low;
Then, the solid-state slag of cold conditions is converted into the slag with certain particle size, the energy that is wherein consumed has further increased the metallurgical slag processing energy consumption again;
At last; Utilize furnace cupola heating and fusion cold conditions slag and modified raw material; In the raw material that meets the demands pack into stove from the top of furnace cupola in batches; Coke in the stove contains certain proportion oxygen in the bottom hot blast effect burning down produces high temperature, and non-coke raw material progressively melts under high temperature action and drops in the cupola well of foot, finally directly is discharged into new materials such as later process production mineral wool, devitrified glass by the melt floss hole.The coal gas that is produced behind the furnace cupola internal combustion coke is discharged through the top gas export control of furnace cupola, owing to have a certain proportion of CO content in the coal gas, need carry out could in atmosphere, discharging after the burning disposal, simultaneously owing to also contain the N of larger proportion in the coal gas
2, carrying out to produce NO when coal gas burns
xPernicious gas, not only energy consumption is high, and seriously polluted.
Also have a kind of emerging two electric arc furnaces hardening and tempering process technology at present, be characterized in clean environment, pollute little.At first be that slag and modified raw material with cold conditions joins in first electric arc furnaces; The heat temperature raising of switching on then fusing; Melt fully and after temperature reaches more than 1400 ℃ at raw material; Melt poured into to be incubated in second electric arc furnaces with interim store, second electric arc furnaces perforate is discharged into later process with melt and produces mineral wool.Because two electric arc furnaces process using is the electrical heating form, so the exhaust gas discharged amount is considerably less.But; What two electric arc furnaces adopted is the discontinuous operation, and the transportation of melt between electric arc furnaces adopts the form of toppling over to accomplish, and melt is difficult to fully mix in second electric arc furnaces; And, thereby cause the changes in flow rate of melt discharging bigger because melt liquid fluctuating before and after toppling over is big; In striding the stove toppling process, can produce a large amount of bubbles in the melt, bubble will cause the aggravation of melt emission flow fluctuation.In addition, because the time that melt stops in electric arc furnaces in two electric arc furnaces technology is short and undercompounding, the homo-effect before the melt discharging can't reach the production requirement of later process, therefore promotes being restricted.
The utility model content
The utility model technical problem to be solved is to provide a kind of and utilizes electrical heating that hot slag is carried out modifier treatment; Pollute little, energy consumption is low, and mixes, mixes the back modified compound stove of slag abundant, that discharge speed is stable and operating procedure thereof quiescent time.
The utility model is realized through following technical scheme:
The modified compound stove of a kind of slag is characterized in that:
The modified compound stove of said slag comprises electric arc furnaces and the electric melting furnace that is arranged in below, electric arc furnaces right side, is communicated with through a downward-sloping raceway groove between the two,
The vertical layout of said electric arc furnaces is offered circular furnace chamber in the stove, the furnace chamber top is an openend, the bell of port covering activity, and the bell bottom is three cylindrical electrodes of " article " font configuration, and electrode stretches in the furnace chamber, offers the inert blowing gas inlet on the furnace chamber diapire,
Be connected through chamfering between the vertical sidewall of electric arc furnaces and the horizontal bottom wall, the melt outlet is offered on the electric arc furnaces right side, and residual iron outlet is offered in the left side, and the melt outlet is positioned at the chamfering top, and residual iron outlet is positioned at the chamfering bottom;
Said electric melting furnace kiln chamber is the strip of lateral arrangement, comprises left and right two separate mixing chambers and levelling chamber, separates through partition wall between the two, and the partition wall bottom is offered the melt flowing hole and is communicated with mixing chamber and levelling chamber,
Configuration agitator in the mixing chamber, the urgent outlet of residue is offered in the bottom,
The melt floss hole is offered in bottom, levelling chamber right side, melt floss hole top arranged around heating molybdenum electric pole, and near melt floss hole, the levelling chamber bottom barricade parallel with partition wall that raise up, wall height and melt flowing hole hole heights of roofs are complementary,
Inert gas import and inert gas outlet are offered in the levelling chamber top in barricade left side, configuration liquid level gauge in the levelling chamber on barricade right side, and levelling chamber's length in barricade left side is greater than mixing chamber length;
Said raceway groove upper end is communicated with the melt outlet of electric arc furnaces, and the mixing chamber left side top is stretched in the lower end, and the assembly of blocking up is opened in configuration on the raceway groove.
Operating procedure is divided into following a few step:
1. will discharge from the blast furnace slag-drip opening, temperature is transported to electric arc furnaces greater than 1300 ℃ hot slag through cool-bag, hot slag is carried out electrical heating heats up;
2. when melt temperature in the electrode utmost point heart circle in the electric arc furnaces rises to the melting temperature more than or equal to the modified material of blast furnace, the solid state q-switched material that in electric arc furnaces, at the uniform velocity adds normal temperature or have uniform temperature, and lasting electric arc furnaces is heated;
3. after added modified material melts fully, in stove, be blown into inert gas, utilize the mixed melt of blowing tentatively to stir to hot slag and modified material from electric arc furnaces bottom;
4. utilize raceway groove, with entering the heat insulation electric melting furnace of sealing through the preliminary mixed melt that stirs in the electric arc furnaces;
5. in the mixing chamber of electric melting furnace, utilize agitator that mixed melt is carried out continuous stirring and mix;
6. the melt after mixing leaves standstill homogenizing in levelling chamber, and time of repose kept electric melting furnace kiln cavity temperature at 1400～1500 ℃ greater than 1 hour when leaving standstill;
7. after the homogenizing, the malleation inert gas that in levelling chamber, is blown into scalable power through inert gas import makes mixed melt with 0.01～0.1m with the air pressure in the control electric melting furnace, maintenance mixed melt liquid level
3The speed of/min is discharged from the melt floss hole.
This device and technology are that the temperature with the blast furnace byproduct directly is transported to electric arc furnaces through cool-bag greater than 1300 ℃ of hot slags, cooling link in the middle of not having; When hot slag in electric arc furnaces in striking success and the electrode utmost point heart circle melt temperature rise to and at the uniform velocity add modified material on the basis that can melt modified material again; After added modified material melts fully, adopt the mode that upwards is blown into inert gas from electric arc furnaces bottom again, mixed melt is tentatively stirred, thereby realize the elementary mixing of melt; Adopt raceway groove to be connected between electric arc furnaces and the electric melting furnace; After melt melts fully in electric arc furnaces and simply mixes; Open the melt outlet, discharge mixed melt through the mode of regular discharging, mixed melt certain inclination angle of process and the raceway groove that adopts heat-resisting insulation material to build by laying bricks or stones flow directly in the electric melting furnace, owing to adopted the mode of raceway groove discharging; The mixed melt flow velocity that gets in the electric melting furnace is more stable, does not have great amount of bubbles and produces; Then; After preliminary mixed melt fully mixes through mechanical agitation in mixing chamber and control temperature, get into levelling chamber's homogenizing from mixing chamber through the partition wall passage, because the existence of barricade, homogenizing is left standstill in the levelling chamber that melt is introduced on the left of the barricade; Along with melt continues to enter; Melt liquid level raises gradually, gets into the levelling chamber on barricade right side until crossing barricade, this moment the liquid level place melt to have left standstill homogenizing abundant; At last, through in levelling chamber, be blown into inert gas, with the pressure of control in the levelling chamber, thereby the liquid level of mixed melt is remained on certain altitude, guarantee that the mass rate of emission of melt remains stable.
Consider that hot slag is directly added electric arc furnaces to carry out be difficult to avoid the entering of a small amount of molten iron in the hot slag, but molten iron must separating as the harmful substance of mineral wool production when modified.Therefore at the melt outlet and the residual iron outlet of electric arc furnaces bottom design certain altitude difference; Hot slag floats above molten iron, discharges from the melt outlet of top, and residual iron is retained and do not arranged in the into back road electric melting furnace at the stove inner bottom part; After residual iron in the stove accumulates the residual iron of some; Can open custom-designed residual iron outlet and carry out residual iron discharging, so both can guarantee electric arc furnaces work operation steady in a long-term, help the quick replacing of furnace lining again.Consider that simultaneously if electric arc furnaces bottom be the right angle, molten iron is prone to form eddy current at the place, right angle, alluvial is inner at electric arc furnaces, so the electric arc furnaces bottom design there is chamfering structure, avoids molten iron to deposit.
The right-hand member kiln chamber corner of electric melting furnace is preferably fillet, also is that the kiln body right angle of considering levelling chamber terminal melt floss hole both sides can produce melt flows " dead angle ", causes the melt alluvial, the melt that fillet can effectively avoid being trapped in the corner sclerosis that is cooled.
Further, at the melt outlet tapping of electric arc furnaces, towards the corrosion protection boss of furnace chamber central protuberance arc, corrosion protection boss top is towards the furnace chamber sidewall slope on the furnace chamber sidewall, and the bottom joins with the furnace chamber diapire straight down.Can reduce of the erosion of slag fluid to melt outlet zone design boss, prolong the service life of furnace wall the furnace wall.
Further again, offer a plurality of grooves on the electric arc furnaces furnace chamber diapire, setting-in air brick in the groove forms the inert blowing gas inlet.
Further again, the raceway groove open top, the stage casing bending, bending section one side arranges and opens the assembly of blocking up that open the assembly of blocking up and comprise rig and stifled rifle, rig and stifled rifle can stretch in the raceway groove from uncovered, are provided with cooling water pipeline in the stifled rifle.The bending angle of bending section helps compact Layout and opens the assembly of blocking up near 90 °, can effectively control the length of raceway groove, avoids that raceway groove is long to cause the melt condensation.Regular discharging modes are adopted in the discharging of the interior mixed melt of electric arc furnaces: in the time of need damming to melt, stifled rifle stretches in the raceway groove and contacts with hot melt, and the cooling water channel cooling is blocked up rifle, crusted with the contacted melt condensation of stifled rifle, and raceway groove stops up, and melt dams; When needing the discharging melt, rig receives to drive and destroys the crust position, and after housing was cracked, melt flowed in raceway groove again.One melts the assembly of blocking up and can realize opening rapidly slag-drip opening and end normal slag of discharging rapidly.
In order to improve the mixed effect of melt, electric melting furnace is separated into mixing chamber and levelling chamber's two parts, and the volume of mixing chamber accounts for 10%～40% of cumulative volume, is preferably 1/3.The about 75t of maximum storage slag amount of electric melting furnace, the minimum about 10t of slag that stores.Can guarantee that like this blast furnace melt fully mixes in mixing chamber, the melt that mixes then flows in the levelling chamber through the passage of partition wall bottom.Levelling chamber not only volume is bigger, helps the abundant homogenizing of melt, and can guarantee that the liquid level of melt in levelling chamber is basicly stable.
Consider that the intermittent discharge melt can cause the level fluctuation phenomenon in the electric arc furnace smelting cycle; Be provided with the outlet of inert gas import and inert gas at the levelling chamber top; So both helped guaranteeing the stable of liquid level, can realize short time cooling through the adjustment inert gas flow again superheated melt through regulating inert gas pressure.The inert gas parameter control can be adjusted through the Level meter of melt floss hole top.
In melt outlet the place ahead 1 meter position short shelves wall is set, main purpose is to increase the range ability of melt in levelling chamber, thereby strengthens homo-effect; Wall height is identical with the height of partition wall bottom melt flowing hole, so just can stop to enter from electric arc furnaces a small amount of molten iron entering next procedure of electric melting furnace.When system equipment overhauled for a long time, the urgent outlet of residue that can utilize mixing chamber bottom was emptied completely the melt of electric melting furnace.
Arranged around has heating molybdenum electric pole above the melt floss hole of electric melting furnace right-hand member; Heating molybdenum electric pole only exists as subsequent use heating system in normal productive process; Promptly in normal productive process; The body of heater of dependence electric melting furnace dispels the heat and regulates the temperature of melt, still can not satisfy on the basis of cooling requirement in the body of heater heat radiation, can realize the short time of superheated melt is cooled off through the adjustment inert gas flow; On the contrary; When processing apparatus long-time fault in back causes melt to be detained in the electric smelter for a long time, follow the heat of body of heater too lost, exist melt to produce the risk of sclerosis because of excessively lowering the temperature; In this case; Electric arc furnaces must stop heating, so just can utilize the molybdenum electrode electric heating system power supply of the voltage transformer system of electric arc furnaces to electric melting furnace, thereby guarantees the long-term stability operation of electric melting furnace.
Need to prove that putting forward left and right position relation in the specification only is a kind of relative position relation of using for convenience, is not the absolute limitations to said orientation.
The beneficial effect of the utility model is:
1) utilizes the blast furnace hot slag direct modifier treatment of temperature on 1300 ℃, be equipped with that electric smelting is auxiliary founds system, compare with traditional furnace cupola technology; Energy consumption reduces about 40% than the latter; Practiced thrift mass energy, product cost reduces about 15%, and is much smaller for the pollution of environment;
2) adopt the auxiliary system that founds of electric smelting, the controllability of founding system than general mineral wool factory furnace cupola is strong, and the viscosity of melt, temperature, composition adjustment are easier, and it becomes fine rate can reach 85～90%, and the fine rate of the one-tenth of general mineral wool factory is 80%;
3) with two electric arc furnaces hardening and tempering process compared with techniques, the compound hardening and tempering process of electric arc furnaces electric melting furnace mixes fully, and it is thorough to leave standstill homogenizing, and emission flow is highly stable, is beneficial to next procedure processing.
Description of drawings
Fig. 1 is a kind of preferred structure elevation cross-sectional view of the utility model
Fig. 2 cuts open figure for Fig. 1 office of overlooking
Among Fig. 1-2: 1 is electric arc furnaces, and 2 are the inert blowing gas inlet, and 4 is electrode, and 5 is the melt outlet, and 6 is residual iron outlet, and 7 is electric melting furnace; 8 is mixing chamber, and 9 is levelling chamber, and 10 is partition wall, and 101 is the melt flowing hole, and 11 is raceway groove; 12 for opening the assembly of blocking up, and 13 is the urgent outlet of residue, and 14 is agitator, and 15 is the melt floss hole, and 16 is heating molybdenum electric pole; 17 is barricade, and 18 is inert gas import, and 19 are the inert gas outlet, and 20 is liquid level gauge, and 21 are the corrosion protection boss.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
The hardening and tempering process that the utility model adopts electric arc furnaces and electric melting furnace to combine:
The main feature of electric arc furnaces 1 heating is noncontinuity production; So in electric arc furnaces 1, only can satisfy modified melting raw materials mixes with simple; But the homogenizing function of melt still needs the regular hour to accomplish in addition, and promptly melt also needs the extra time to accomplish the homogenizing function after in electric arc furnaces 1, accomplishing modified mixing.
The main feature of electric melting furnace 7 is to make melt mixed and homogenizing abundant; Simultaneously can realize heat insulation function; The melt characteristic of from electric melting furnace 7, discharging is stable, and promptly temperature and flow all can keep stable state, and this characteristic also is the essential condition of mineral wool centrifuge operate as normal.
Be communicated with through a downward-sloping raceway groove 11 between electric arc furnaces 1 and the cloth electric melting furnace 7.
Electric arc furnaces 1 vertical layout is offered circular furnace chamber in the stove, the furnace chamber top is an openend; The bell of port covering activity, bell bottom are three cylindrical electrodes 4 of " article " font configuration, and electrode 4 stretches in the furnace chamber; Offer inert blowing gas inlet 2 on the furnace chamber diapire, be connected through chamfering between the vertical sidewall of electric arc furnaces 1 and the horizontal bottom wall, melt outlet 5 is offered on electric arc furnaces 1 right side; Residual iron outlet 6 is offered in the left side, and melt outlet 5 is positioned at the chamfering top, and residual iron outlet 6 is positioned at the chamfering bottom; Melt outlet 5 tappings at electric arc furnaces 1; Towards the corrosion protection boss 21 of furnace chamber central protuberance arc, corrosion protection boss 21 tops are towards the furnace chamber sidewall slope on the furnace chamber sidewall, and the bottom joins with the furnace chamber diapire straight down;
Electric melting furnace 7 kiln chambeies are the strip of lateral arrangement, and right-hand member kiln chamber corner is a fillet.Electric melting furnace 7 comprises left and right two separate mixing chambers 8 and levelling chamber 9; Separate through partition wall 10 between the two, partition wall 10 bottoms are offered melt flowing hole 101 and are communicated with mixing chamber 8 and levelling chamber 9, configuration agitator 14 in the mixing chamber 8; The urgent outlet 13 of residue is offered in the bottom; Melt floss hole 15 is offered in bottom, levelling chamber 9 right sides, and heating molybdenum electric pole 16 is arranged in melt floss hole 15 tops, near melt floss hole 15, the levelling chamber 9 bottoms barricade 17 parallel with partition wall 10 that raise up; Barricade 17 height are complementary with melt flowing hole 101 hole heights of roofs; Inert gas import 18 and inert gas outlet 19 are offered in levelling chamber 9 tops in barricade 17 left sides, configuration liquid level gauge 20 in the levelling chamber 9 on barricade right side, and levelling chamber's 9 length in barricade 17 left sides are greater than mixing chamber 8 length;
When utilizing said apparatus to carry out modifier treatment:
1. will discharge from the blast furnace slag-drip opening, temperature is transported to electric arc furnaces 1 greater than 1300 ℃ hot slag through cool-bag, hot slag is carried out electrical heating heats up;
2. when melt temperature rises to the melting temperature (this temperature is about 1450 ℃ usually) more than or equal to the modified material of blast furnace in 4 utmost point hearts of electrode in the electric arc furnaces 1 circle; In electric arc furnaces 1, at the uniform velocity add the solid state q-switched material of normal temperature; And continue electric arc furnaces 1 is heated, the dotted line circle position of electrode 4 outer rims is electrode utmost point heart circle among Fig. 2;
3. after added modified material melts fully, in stove, be blown into inert gas, utilize the mixed melt of blowing tentatively to stir to hot slag and modified material from electric arc furnaces 1 bottom;
4. utilize raceway groove 11, the mixed melt that stirs through blowing in the electric arc furnaces 1 is entered the heat insulation electric melting furnace 7 of sealing;
5. in the mixing chamber 8 of electric melting furnace 7, utilize 14 pairs of mixed melt of agitator to carry out continuous stirring and mix;
6. the melt after mixing leaves standstill homogenizing in levelling chamber 9, and time of repose kept electric melting furnace 7 kiln cavity temperatures at 1400～1500 ℃ greater than 1 hour when leaving standstill;
7. after the homogenizing, in levelling chamber 9, be blown into the malleation inert gas with the air pressure in the control electric melting furnace 7, maintenance mixed melt liquid level, mixed melt is stablized 0.5～2m/min speed from 15 dischargings of melt floss hole with one through inert gas import 18.
Consider that the hot slag of blast furnace itself has higher heat, the groundwork of the utility model device and technology is to carry out homogenizing again after in modified process, modified raw material being melted fully, finally realizes the stable of melt quality.The particularity of employed electric arc furnaces 1 process characteristic of contrast related process and this project medium; In conjunction with the different characteristics of present electric furnace arrangement for producing steel 1 with alloy smelting reduction electric arc furnaces 1; Design this device and had quick fusing function, and the fixing vertical electric arc furnaces 1 of low capacity of body of heater.
At first the volume of electric arc furnaces 1 must satisfy minimum and connects the average daily number of times of slag and guarantee the requirement of mineral wool production line quantity-produced.Must avoid molten iron to get into next procedure owing to utilize blast furnace cinder to prepare mineral wool, and utilize arc heated can hold modified raw material to melt as early as possible, be the electrode material of the best so select the graphite electrode of densification for use.The bell of electric arc furnaces 1 adopts the hydraulic pressure lift and the rotating mechanism of ladle refining furnace, after utilizing slag ladle to access slag, can open bell like this and directly slag poured in the stove, covers bell then, inserts the electrode smelting that heats up.Consider the high temp effect of electric arc furnaces 1 arc light, bell adopts water-cooling structure.
In addition; Select for use the furnace binding of high liquid level can reduce the windage of the energy; But high liquid level melt can be poor in formation temperature about the liquid level under the arc heated effect; In order to reduce the temperature difference of melt, be designed for the inert blowing gas inlet of stirring in the body of heater bottom, can realize the agitating function of melt in smelting process.
With the electric melting furnace that electric arc furnaces 1 volume is complementary, the volume of mixing chamber accounts for 27.3% of cumulative volume.The about 75t of maximum slag amount of electric melting furnace, the about 10t of minimum slag.
Consider that this electric arc furnaces 1 volume is little; And slag electrical heating fusion process is bigger to the influence of slag bricking; Simultaneously about 2～3 days of the replacing time of this electric arc furnaces 1 bricking, so preferably take two cover furnace bindings, the pattern of a production and a maintenance can be guaranteed carrying out continuously of ordinary production.
In order to improve the service life of device, electric arc furnaces 1 body of heater is preferably thick protecting wall structure.All adopt the Al-Si acidproof brick to build by laying bricks or stones in the body of heater, the furnace chamber height is 1～10m, and internal diameter is 1.5～10m, and furnace chamber sidewall wall thickness is 0.2～0.8m, and furnace bottom thickness is 0.5～1m, and the chamfering height is 0.1～0.5m; Electric melting furnace 7 anti-materials need be used the acidproof anti-material of high-quality Al-Si usually, but levelling chamber's partition wall 10 and barricade 17 anti-materials all can be selected the anti-material of non-close slag system for use; Raceway groove 11 adopts the Al that can less slag coheres
2O
3The raceway groove of-SiC-C series and compound masonry construction of clay brick and high inclination-angle arranges that the angle of inclination of raceway groove 11 is preferably 10～30 °.
Following table has been explained the main distinction of the utility model electric furnace electric melting furnace equipment and technology and traditional furnace cupola technology, two electric arc furnaces technologies:
Claims (7)
1. modified compound stove of slag is characterized in that:
The modified compound stove of said slag comprises electric arc furnaces (1) and is arranged in the electric melting furnace (7) of below, electric arc furnaces right side, is communicated with through a downward-sloping raceway groove (11) between the two,
The vertical layout of said electric arc furnaces (1) is offered circular furnace chamber in the stove, the furnace chamber top is an openend; The bell of port covering activity, bell bottom are " article " font configuration three cylindrical electrodes (4), and electrode (4) stretches in the furnace chamber; Offer inert blowing gas inlet (2) on the furnace chamber diapire
Be connected through chamfering between the vertical sidewall of electric arc furnaces (1) and the horizontal bottom wall, melt outlet (5) is offered on electric arc furnaces (1) right side, and residual iron outlet (6) is offered in the left side, and melt outlet (5) is positioned at the chamfering top, and residual iron outlet (6) is positioned at the chamfering bottom;
Said electric melting furnace (7) kiln chamber is the strip of lateral arrangement; Comprise left and right two separate mixing chambers (8) and levelling chamber (9); Separate through partition wall (10) between the two, partition wall (10) bottom is offered melt flowing hole (101) and is communicated with mixing chamber (8) and levelling chamber (9)
Configuration agitator (14) in the mixing chamber (8), the urgent outlet of residue (13) is offered in the bottom,
Levelling chamber (9) offers melt floss hole (15) in the right-hand member bottom; Melt floss hole (15) top arranged around heating molybdenum electric pole (16); Raise up barricade (17) parallel near melt floss hole (15), levelling chamber (9) bottom with partition wall (10); Barricade (17) height is complementary with melt flowing hole (101) hole heights of roofs
Inert gas import (18) and inert gas outlet (19) are offered in levelling chamber (9) top in barricade (17) left side, configuration liquid level gauge (20) in the levelling chamber on barricade right side (9), and levelling chamber (9) length in barricade (17) left side is greater than mixing chamber (8) length;
Said raceway groove (11) upper end is communicated with the melt outlet (5) of electric arc furnaces (1), and mixing chamber (8) left side top is stretched in the lower end, and raceway groove (11) is gone up configuration and opened the assembly of blocking up (12).
2. the modified compound stove of slag according to claim 1 is characterized in that:
At melt outlet (5) tapping of electric arc furnaces (1), towards the corrosion protection boss (21) of furnace chamber central protuberance arc, corrosion protection boss (21) top is towards the furnace chamber sidewall slope on the furnace chamber sidewall, and the bottom joins with the furnace chamber diapire straight down.
3. the modified compound stove of slag according to claim 1; It is characterized in that: said raceway groove (11) open top; Stage casing bending, bending section one side are arranged and are opened the assembly of blocking up (12), open the assembly of blocking up (12) and comprise rig and stifled rifle; Rig and stifled rifle can stretch in the raceway groove (11) from uncovered, are provided with cooling water pipeline in the stifled rifle.
4. the modified compound stove of slag according to claim 1 is characterized in that: said electric melting furnace (7) right-hand member kiln chamber corner is a fillet.
5. the modified compound stove of slag according to claim 1 is characterized in that: the volume of said mixing chamber (8) accounts for 10%～40% of electric melting furnace (7) cumulative volume.
6. the modified compound stove of slag according to claim 1 is characterized in that: said electric arc furnaces (1) furnace chamber height is 1～10m, and internal diameter is 1.5～10m, and furnace chamber sidewall wall thickness is 0.2～0.8m, and furnace bottom thickness is 0.5～1m.
7. the modified compound stove of slag according to claim 1 is characterized in that: offer groove on said electric arc furnaces (1) diapire, setting-in air brick in the groove forms inert blowing gas inlet (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011204062761U CN202420180U (en) | 2011-10-21 | 2011-10-21 | Slag-tempering composite furnace |
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| CN2011204062761U CN202420180U (en) | 2011-10-21 | 2011-10-21 | Slag-tempering composite furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063030A (en) * | 2011-10-21 | 2013-04-24 | 宝钢工程技术集团有限公司 | Slag hardening and tempering compound furnace and operation process thereof |
| CN111574026A (en) * | 2020-05-25 | 2020-08-25 | 交城义望铁合金有限责任公司 | Tempering and heat-preserving furnace for microcrystalline glass production |
| CN114835502A (en) * | 2022-04-06 | 2022-08-02 | 瑞泰科技股份有限公司 | Method for improving smelting quality of fusion-cast refractory material |
-
2011
- 2011-10-21 CN CN2011204062761U patent/CN202420180U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063030A (en) * | 2011-10-21 | 2013-04-24 | 宝钢工程技术集团有限公司 | Slag hardening and tempering compound furnace and operation process thereof |
| CN103063030B (en) * | 2011-10-21 | 2015-12-30 | 宝钢工程技术集团有限公司 | A kind of modified compound stove of slag and operating procedure thereof |
| CN111574026A (en) * | 2020-05-25 | 2020-08-25 | 交城义望铁合金有限责任公司 | Tempering and heat-preserving furnace for microcrystalline glass production |
| CN114835502A (en) * | 2022-04-06 | 2022-08-02 | 瑞泰科技股份有限公司 | Method for improving smelting quality of fusion-cast refractory material |
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