CN103589867B - Method and device for treating ironmaking ash, mud and mill tailings by plasma torch heating technology - Google Patents
Method and device for treating ironmaking ash, mud and mill tailings by plasma torch heating technology Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 67
- 238000005516 engineering process Methods 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 title claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 145
- 229910052742 iron Inorganic materials 0.000 claims abstract description 60
- 239000002893 slag Substances 0.000 claims abstract description 53
- 238000003723 Smelting Methods 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 27
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims abstract description 26
- 238000006722 reduction reaction Methods 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 238000009628 steelmaking Methods 0.000 claims abstract description 9
- 239000004566 building material Substances 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000005272 metallurgy Methods 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 230000009970 fire resistant effect Effects 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 239000010436 fluorite Substances 0.000 claims description 5
- 239000002737 fuel gas Substances 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000004927 fusion Effects 0.000 claims description 4
- 238000002203 pretreatment Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 3
- 229910052725 zinc Inorganic materials 0.000 claims 3
- 239000011701 zinc Substances 0.000 claims 3
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000002918 waste heat Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 8
- 238000007493 shaping process Methods 0.000 description 8
- 241001062472 Stokellia anisodon Species 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 238000005453 pelletization Methods 0.000 description 6
- 238000004134 energy conservation Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003913 materials processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012256 powdered iron Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method and a device for treating ironmaking ash (mud) and mill tailings by a plasma torch heating technology. The method comprises the steps that: 1, the powdered ironmaking ash (mud) and the mill tailings are added into a plasma technical smelting furnace after pretreatment and ingredient adjustment; 2, smelting raw materials perform reduction reaction; generated high temperature furnace gas is exhausted from the upper part of a furnace body; molten slag and ferrosilicon or reduced iron can realize slag and iron layering, and flow out from the lower part of the furnace body; 3, the furnace gas exhausted from the plasma technical smelting furnace is dedusted and subjected to waste heat utilization; and 4, after the molten and layered slag, and the ferrosilicon or the reduced iron flowing out of the smelting furnace are chilled, the slag and the iron are further separated; the ferrosilicon serves as a steelmaking raw material; and the slag can be used for building materials. The method and the device employs the plasma torch heating technology to treat the mill tailings, a blank in the field is filled, and the method and the device have positive significances of advancement, high efficiency, full use of resources and environmental protection.
Description
Technical field
The present invention relates to Metal smelting field, more specifically be the solid waste that the solid waste that produces of a kind of safety and environmental protection process Steel Plant ironmaking and Iron Mine quarry produce, and fill part and utilize its composition condition (carbon containing, iron, silicon etc.), produce method and the device of ferro-silicon and reduced iron.
Background technology
Fast development of iron and steel smelting industry and iron ore to adopt selected in China, which produces a large amount of iron ash (mud) and backfilling materials processing, is a famous industrial solid waste, a large number of occupied land stockpiling is also has a risk of environmental pollution hazards and library destroyed.Meanwhile, the breeze that contains in ironmaking ash (mud), coke powder and ground flux etc. be again-a little useful composition (iron content about 35%, carbon containing about 40%, also Han You ?etc. non-ferrous metal composition); And except containing iron in some beneficiation tailing, outside carbon, go back the silicon that Han You More is many.As by smelt iron ash (mud) and beneficiation tailing treat as the resource that can again utilize, safety and environmental protection is processed and is carried out resource reclaim, not only can turn waste into wealth and create new economic benefit, and has very large meaning to protection of the environment:
For solve steel industry produce ironmaking ash (mud) this-the difficult problem of environmental protection, state Inner has done a lot of effort outward.Current test (demonstration) case be substantially smelt iron by carbonaceous pelletizing mode or Dui Han ?dust shaping rear do reduction calcining, Hui Shou ?and obtained prereduced burden (for steel-making).Its technique all exists will, by raw materials for metallurgy pressure ball and shaping, carry out forging baked and prereduction in 1 stove, is then transferred to producing metallized furnace charge in another 1 stove the problem done the melting of slag iron and be separated.Not only reaction of discontinuity, complex processes and devices, production efficiency is not high, pressing and forming will generate dust pollution, convenient and recycling way don't directly;The lack of these techniques and process issues and therefore lead to the process - straight could not continue to promote.And for iron content, carbon, the beneficiation tailing of the compositions such as silicon, then the Case Report of the also non-See process of being correlated with and the utilization of resources, still belongs to blank.Therefore, that exploitation makes new advances and more advanced and applicable process ironmaking grey (mud) and beneficiation tailing, and method and the device that can fill the wherein contained useful resources of part utilization, become smelting iron and steel and iron ore Bian selects industry fixed-end forces anxious to be resolved difficult.
Summary of the invention
The present invention to overcome the disadvantages of the existing process, thus providing - kind of relatively simple production process and equipment, production efficiency is high, no dust pollution, and recycling approach directly convenient processing iron ash (mud) and backfilling materials processing methods and devices.
In order to realize object of the present invention, following technical scheme is proposed:
A method for using plasma torch heat treated ironmaking ash, mud and beneficiation tailing, comprises the step of carrying out in the following order:
1) by powdery ironmaking ash, mud with beneficiation tailing does pre-treatment and to carbon, iron, after the amount of silicon composition and fluorite or lime adjusts, directly join as raw materials for metallurgy and adopt in plasma technology smelting furnace;
2) there is reduction reaction in raw materials for metallurgy in plasma technology smelting furnace, powder raw material reaction produce containing carbon monoxide composition or Han You ? high-temperature furnace gas, discharge from upper of furnace body; Under furnace high-temperature condition, the slag of molten state and ferro-silicon Ge reduced iron realize the layering of slag iron and flow out from body of heater 1 bottom; Reaction is continuous print, and reduction reaction and the melting of slag iron are separated in stove and complete; It is the operational condition of normal pressure or tiny structure in stove; Plasma torch provides thermal source for reduction reaction, and described plasma torch provides thermal source to be the gas-jet spraying into high temperature and high heat density in stove for reduction reaction, direct heating and fusion smelting raw material, guarantees to hold the bath temperature of furnace bottom and impels the layering of slag iron;
3) from plasma technology smelting furnace discharge furnace gas through dedusting and/or reclaim condensation get off ?element, furnace gas is used as fuel gas with low heat value;
4) molten state flowed out from plasma technology smelting furnace and the slag of layering and ferro-silicon Ge reduced iron are after Quench, and slag iron enters-walk separation, and ferro-silicon is as product, and reduced iron is as steelmaking feed, and slag is for building materials; The molten state flowed out from plasma technology smelting furnace and the slag of layering and ferro-silicon Ge reduced iron are after Quench, and slag iron can enter-walk separation, and ferro-silicon can be used as product and reduced iron can be used as steelmaking feed.
In step 3), the furnace gas treatment system of plasma technology smelting furnace operates under airtight normal pressure or tiny structure condition, guarantees safety, be beneficial to protection of the environment and the recovery to ?metal.
The invention allows for the plasma torch heats technology smelting furnace of the method for a kind of using plasma torch heating technique process ironmaking ash, mud and beneficiation tailing, comprise upright columnar body of heater 1; The inner side entirety of described body of heater 1 is provided with refractory masses 2; The top of body of heater 1 is provided with charging opening 3; The top of body of heater 1 is provided with furnace gas export 4; The bottom of body of heater 1 is provided with plasma torch 5; The bottom of body of heater 1 is provided with slag iron outlet 6.
Described refractory masses 2 comprises at least fire brick layer, fire-resistant flaggy and the fire-resistant casting bed of material.
Described charging opening 3 comprises 1 axial admission pipe.
Described furnace gas export 4 comprises 2 radial escape pipes.
Described plasma torch 5 comprises 1 group of plasma torch along the circumferential direction.
Described plasma torch 5 is direct current metal anode and untransferable arc plasma gun.
Described slag iron outlet 6 comprises 2 radial discharge pipes.
The method of provided by the invention-kind of Bian plasma torch heating technique process ironmaking ash (mud) and beneficiation tailing is with Zhuan Catching-rabbits, both simple flow and energy-conservation and reduce costs, enhance productivity, avoid again pressure ball and shaping time produce dust pollution, protect environment; This technology and the process of existing carbonaceous pelletizing mode smelt iron ash (mud) technique compared with; eliminate pressure ball and shaping operation; energy-conservation; reduce costs and raise the efficiency; avoid dust pollution; be conducive to the upgrading of fixed-end forces and protection of the environment technology and the technological transformation that advances Dui Xian You Installed to put, and for the style of economic increase that changes industry with add the Strong capability of sustainable development and play a role.
Accompanying drawing explanation
Fig. 1 is the schema of the method for using plasma torch heating technique process of the present invention ironmaking ash (mud).
Fig. 2 is the schematic diagram of plasma technology smelting furnace of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
The invention provides the method for a kind of using plasma torch heating technique process ironmaking ash (mud) and beneficiation tailing, comprise order according to the following steps and carry out:
1, the powdered iron ash (mud) backfilling materials and ore dressing as pretreatment and composition adjustment (carbon, iron, silicon, and the quantity of fluorite and lime), don't need to pressure the ball and forming, as raw material for smelting directly added to the special structure of plasma technology in the smelting furnace;Both simplified process and energy saving and cost reduction, and avoid the pressure when the ball and forming dust pollution, protect the environment.
2, there is reduction reaction in raw materials for metallurgy in plasma technology smelting furnace, and powder raw material speed of reaction is fast, and the high-temperature furnace gas of generation (containing compositions such as carbon monoxide, the also Han You had ?) is discharged from upper of furnace body; Under furnace high-temperature condition, slag and the ferro-silicon Ge reduced iron of molten state can realize the layering of slag iron and flow out from lower portion of furnace body; Reaction is continuous print, and reduction reaction and the melting of slag iron are separated in 1 stove and complete; It is normal pressure (tiny structure) operational condition in stove; Plasma torch provides thermal source for reduction reaction; Plasma torch can spray into the gas-jet of high temperature and high heat density in stove, can direct heating and fusion smelting raw material, and can keep the bath temperature of furnace bottom and impel the layering of slag iron.
The furnace gas of 3, discharging from plasma technology smelting furnace through dedusting and UTILIZATION OF VESIDUAL HEAT IN (as Han You furnace gas ?, also should reclaim condensation get off ?element), can be used as fuel gas with low heat value and be used; Plasma technology smelting furnace and furnace gas treatment system are all normal pressure (tiny structure) conditions, have both ensured safety and protection of the environment, also You Li ?etc. the recovery of metal.
4, the molten state flowed out from plasma technology smelting furnace and the slag of layering and ferro-silicon Ge reduced iron are after Quench, slag iron can enter-walk separation, ferro-silicon can be used as product and reduced iron can be used as steelmaking feed, and slag is harmless vitreum material, can be used for building materials.Based on its Cheng Fen Te Dian (carbon containing and iron), reduction reaction and the fusing of slag iron can be there is in plasma technology smelting furnace, generate reduced iron in ironmaking ash (mud); Based on its composition (carbon containing, silicon and iron), reduction reaction can be there is and generate ferro-silicon in siliceous beneficiation tailing in plasma technology smelting furnace; All can realize the recycling of resource.
In described step 1), powdery ironmaking ash (mud) and beneficiation tailing are made pre-treatment and composition adjustment (carbon, iron, the amount of silicon composition and fluorite or lime) after, do not need to do pressure ball and shaping, directly join in the plasma technology smelting furnace of specialized structure as raw materials for metallurgy; Both simple flow and energy-conservation and reduce costs, enhances productivity, avoid again pressure ball and shaping time the dust pollution that produces, protect environment;
Described step 2) in raw materials for metallurgy in plasma technology smelting furnace, there is reduction reaction, powder raw material speed of reaction is fast, and the high-temperature furnace gas of generation (containing compositions such as carbon monoxide, the also Han You had ?) is discharged from upper of furnace body; Under furnace high-temperature condition, slag and the ferro-silicon Ge reduced iron of molten state can realize the layering of slag iron and flow out from lower portion of furnace body; Reaction is continuous print, and reduction reaction and the melting of slag iron are separated in 1 stove and complete; It is normal pressure (tiny structure) operational condition in stove; Plasma torch provides thermal source for reduction reaction; Plasma torch can spray into the gas-jet of high temperature and high heat density in stove, can direct heating and fusion smelting raw material, and can keep the bath temperature of furnace bottom and impel the layering of slag iron;
The furnace gas of discharging from plasma technology smelting furnace in described step 3) through dedusting and UTILIZATION OF VESIDUAL HEAT IN (as Han You furnace gas ?, also should reclaim condensation get off ?element), can be used as fuel gas with low heat value and be used; Plasma technology smelting furnace and furnace gas treatment system are all airtight normal pressure (tiny structure) operational conditions, have both ensured safety and protection of the environment, also Li Yu ?etc. the recovery of metal;
Described step 4) in the molten state that flows out from plasma technology smelting furnace and the slag of layering and ferro-silicon Ge reduced iron after Quench, slag iron can enter-walk separation, ferro-silicon can be used as product and reduced iron can be used as steelmaking feed, and slag is harmless vitreum material, can be used for building materials.Based on its Cheng Fen Te Dian (carbon containing and iron), reduction reaction and the fusing of slag iron can be there is in plasma technology smelting furnace, generate reduced iron in ironmaking ash (mud); Based on its composition feature (carbon containing, silicon and iron), reduction reaction can be there is and generate ferro-silicon in siliceous beneficiation tailing in plasma technology smelting furnace; All can realize the recycling of resource.
The present invention also provides a kind of plasma technology smelting furnace of specialized structure, comprises upright cylindrical furnace 1, is arranged on base 7.Furnace body inside entirety is provided with refractory masses 2; Body of heater top is provided with charging opening 3; Upper of furnace body is provided with furnace gas export 4, and lower portion of furnace body is provided with plasma torch 5; Bottom of furnace body is provided with melting slag iron outlet 6.
Described furnace body inside entirety is provided with refractory masses 2, comprises the fire brick layer of at least 3 kinds of different performances, fire-resistant flaggy and the fire-resistant casting bed of material.
Described body of heater top is provided with charging opening 3, comprises 1 axial admission pipe.
Described upper of furnace body is provided with furnace gas export 4, comprises 2 radial escape pipes.
Described lower portion of furnace body is provided with plasma torch 5, comprises and along the circumferential direction has 1 group of plasma torch.
Described plasma torch is direct current metal anode and untransferable arc plasma gun.
Described bottom of furnace body is provided with melting slag iron outlet 6, comprises 2 radial discharge pipes.
Method provided by the invention, after powdery ironmaking ash (mud) and beneficiation tailing being made pre-treatment and composition adjustment (carbon, iron, the amount of silicon composition and fluorite or lime), do not need to do pressure ball and shaping, directly join in the plasma technology smelting furnace of specialized structure as raw materials for metallurgy; With the process of existing carbonaceous pelletizing mode smelt iron ash (mud) technique compared with; eliminate pressure ball and molding procedure in flow process of the present invention, both simple flow and energy-conservation and reduce costs, enhance productivity; also avoid pressure ball and shaping time dust pollution, protect environment.
The method of provided by the invention-kind of Bian plasma torch heating technique process ironmaking ash (mud) and beneficiation tailing, reduction reaction is there is in raw materials for metallurgy in plasma technology smelting furnace, powder raw material speed of reaction is fast, the high-temperature furnace gas that produces (containing compositions such as carbon monoxide, the also Han You had ?) is discharged from upper of furnace body; Under furnace high-temperature condition, slag and the ferro-silicon Ge reduced iron of molten state can realize the layering of slag iron and flow out from lower portion of furnace body; Reaction is continuous print, and reduction reaction and the melting of slag iron are separated in 1 stove and complete; It is normal pressure (tiny structure) operational condition in stove; Plasma torch provides thermal source for reduction reaction; With the process of existing carbonaceous pelletizing mode smelt iron ash (mud) technique compared with; filling part in flow process of the present invention utilizes plasma torch can spray into the advantageous feature of high temperature and high heat density gas-jet in stove; only can complete reduction reaction with 1 stove to be separated with the melting of slag iron; both simple flow, reduces costs and enhances productivity; Also innovate Bian plasma torch heating technique process beneficiation tailing, fill up this field blank.
The method of provided by the invention-kind of Bian plasma torch heating technique process ironmaking ash (mud) and beneficiation tailing, the furnace gas of discharging from plasma technology smelting furnace through dedusting and UTILIZATION OF VESIDUAL HEAT IN (as Han You furnace gas ?, also should reclaim condensation get off ?element), can be used as fuel gas with low heat value and be used; With the process of existing carbonaceous pelletizing mode smelt iron ash (mud) technique compared with; the reaction of flow process of the present invention is continuous print and transports without intermediates; total system is all airtight normal pressure (tiny structure) operational condition; not only ensured safety but also protection of the environment, also You Li ?etc. the recovery of metal.
The method of a kind of Bian plasma torch heating technique process ironmaking ash (mud) provided by the invention and beneficiation tailing; the molten state flowed out from plasma technology smelting furnace and the slag of layering and ferro-silicon Ge reduced iron are after Quench; slag iron can enter-walk separation; ferro-silicon can be used as product and reduced iron can be used as steelmaking feed; slag is harmless vitreum material, can be used for building materials; With the process of existing carbonaceous pelletizing mode smelt iron ash (mud) technique compared with, the product of flow process of the present invention is the end product reduced iron that degree of metalization degree is the highest, resource reclaim mode directly and efficiency high; The present invention also innovates the siliceous beneficiation tailing of using plasma torch heating technique process and produces ferro-silicon product, has both filled up this field blank, has also made ore dressing field boundary solid waste turn waste into wealth equally, the new approach of developing resource reutilization and protection of the environment.
Above-described specific embodiment; further detailed description has been carried out to object of the present invention, technical scheme and beneficial effect; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a method for using plasma torch heat treated ironmaking ash, mud and beneficiation tailing, comprises the step of carrying out in the following order:
1) by powdery ironmaking ash, mud with beneficiation tailing does pre-treatment and to carbon, iron, after the amount of silicon composition and fluorite or lime adjusts, directly join as raw materials for metallurgy and adopt in plasma technology smelting furnace;
2) there is reduction reaction in raw materials for metallurgy in plasma technology smelting furnace, and powder raw material reaction produces containing carbon monoxide composition or the high-temperature furnace gas containing zinc, discharges from upper of furnace body; Under furnace high-temperature condition, the slag of molten state and ferro-silicon Ge reduced iron realize the layering of slag iron and flow out from body of heater (1) bottom; Reaction is continuous print, and reduction reaction and the melting of slag iron are separated in stove and complete; It is the operational condition of normal pressure or tiny structure in stove; Plasma torch provides thermal source for reduction reaction, and described plasma torch provides thermal source to be the gas-jet spraying into high temperature and high heat density in stove for reduction reaction, direct heating and fusion smelting raw material, guarantees to hold the bath temperature of furnace bottom and impels the layering of slag iron;
3) zinc element that the furnace gas of discharging from plasma technology smelting furnace gets off through dedusting and/or recovery condensation, furnace gas is used as fuel gas with low heat value;
4) molten state flowed out from plasma technology smelting furnace and the slag of layering and ferro-silicon Ge reduced iron are after Quench, and slag iron enters-walk separation, and ferro-silicon is as product, and reduced iron is as steelmaking feed, and slag is for building materials; The molten state flowed out from plasma technology smelting furnace and the slag of layering and ferro-silicon Ge reduced iron are after Quench, and slag iron can enter-walk separation, and ferro-silicon can be used as product and reduced iron can be used as steelmaking feed;
Described in step 3), the furnace gas treatment system of plasma technology smelting furnace operates under airtight normal pressure or tiny structure condition, guarantees safety, be beneficial to protection of the environment and the recovery to zinc metal.
2. use the plasma torch heats technology smelting furnace of the method for using plasma torch heating technique process ironmaking ash, mud and the beneficiation tailing described in claim 1, comprise upright columnar body of heater (1); The inner side entirety of described body of heater (1) is provided with refractory masses (2); The top of body of heater (1) is provided with charging opening (3); The top of body of heater (1) is provided with furnace gas export (4); The bottom of body of heater (1) is provided with plasma torch (5); The bottom of body of heater (1) is provided with slag iron outlet (6); Described refractory masses (2) comprises at least fire brick layer, fire-resistant flaggy and the fire-resistant casting bed of material; Described charging opening (3) comprises 1 axial admission pipe; Described furnace gas export (4) comprises 2 radial escape pipes; Described plasma torch (5) comprises 1 group of plasma torch along the circumferential direction; Described plasma torch (5) is direct current metal anode and untransferable arc plasma gun; Described slag iron outlet (6) comprises 2 radial discharge pipes.
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| CN110029227B (en) * | 2019-05-15 | 2020-01-07 | 东北大学 | Method for preparing ferro-silicon-aluminum by using waste refractory material as raw material through plasma jet feeding |
| CN110004300B (en) * | 2019-05-15 | 2020-03-20 | 东北大学 | Method for preparing ferrosilicon alloy by using aluminum ash as raw material through plasma jet feeding |
| CN111549195B (en) * | 2020-05-12 | 2020-11-10 | 江苏柏瀚环境科技有限公司 | Process and system for reducing iron ore powder by plasma rapid gasification and pyrolysis of medical garbage |
| CN112427646A (en) * | 2020-12-02 | 2021-03-02 | 山东理工大学 | Method for preparing magnetic abrasive material by supercritical carbon dioxide assisted plasma spray |
| CN113245347B (en) * | 2021-05-10 | 2022-11-04 | 武汉理工大学 | Impurity removing method for solid waste of silicate and application thereof |
| CN114735938A (en) * | 2022-04-29 | 2022-07-12 | 武汉理工大学 | Method for preparing microcrystalline glass by using electromagnetic induction furnace |
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| EP0757972B1 (en) * | 1993-03-08 | 2001-06-06 | Kabushiki Kaisha Kobe Seiko Sho | Plasma furnace |
| US5579705A (en) * | 1993-03-08 | 1996-12-03 | Kabushiki Kaisha Kobe Seiko Sho | Plasma furnace and a method of operating the same |
| US5728193A (en) * | 1995-05-03 | 1998-03-17 | Philip Services Corp. | Process for recovering metals from iron oxide bearing masses |
| CN1051579C (en) * | 1996-09-18 | 2000-04-19 | 中国科学院力学研究所 | Method and apparatus for smelting high melting metal by plasma |
| CN1295134A (en) * | 1999-11-08 | 2001-05-16 | 武汉科技大学 | Direct stainless steel smelting method and smelter by AC plasma melting to reduce concentrated nichromite |
| CN1098935C (en) * | 1999-11-24 | 2003-01-15 | 武汉科技大学 | AC plasma melting reduction process and equipment for direct smelting of ferroalloy with very low carbon content |
| CN102816892A (en) * | 2011-06-10 | 2012-12-12 | 冯小军 | Method for smelting metal waste into steel |
| CN202274732U (en) * | 2011-10-17 | 2012-06-13 | 武汉金拜尔工程设备有限公司 | Erect cylindrical plasma torch calcium carbid furnace |
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