CN202692671U - Melting and depleting electric furnace of side-blowing melting pool - Google Patents
Melting and depleting electric furnace of side-blowing melting pool Download PDFInfo
- Publication number
- CN202692671U CN202692671U CN201220351405.6U CN201220351405U CN202692671U CN 202692671 U CN202692671 U CN 202692671U CN 201220351405 U CN201220351405 U CN 201220351405U CN 202692671 U CN202692671 U CN 202692671U
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- Prior art keywords
- slag
- furnace
- melting
- hole
- heater
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- Expired - Fee Related
Links
- 238000002844 melting Methods 0.000 title claims abstract description 15
- 230000008018 melting Effects 0.000 title claims abstract description 15
- 238000007664 blowing Methods 0.000 title claims abstract description 10
- 230000000779 depleting effect Effects 0.000 title abstract 3
- 239000002893 slag Substances 0.000 claims abstract description 63
- 239000007921 spray Substances 0.000 claims abstract description 16
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 11
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 claims description 18
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 239000003818 cinder Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 10
- 239000010949 copper Substances 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 229910052759 nickel Inorganic materials 0.000 abstract description 4
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000003723 Smelting Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000004062 sedimentation Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000005987 sulfurization reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052976 metal sulfide Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241001640558 Cotoneaster horizontalis Species 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910017135 Fe—O Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000003113 dilution method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052840 fayalite Inorganic materials 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model discloses a melting and depleting electric furnace of a side-blowing melting pool. The depleting electric furnace consists of a furnace frame, a furnace body arranged on the furnace frame and a spray gun inserted from the side wall of the furnace body; the upper part of the furnace body is provided with a temperature measurement hole, a feeding hole, a flue, electrode holes and a slag detecting hole; the side wall of the furnace body is provided with a reducer spray gun oblique insertion hole and matte discharge holes; and the end wall of the furnace body is provided with a slag discharge hole and an emptying hole. Through the electric furnace, the slag melting point and the viscosity of nickel or copper melting slag are improved, nickel or copper chemically dissolved in the slag are converted into matte, and the recovery rate of metal is improved by slag-matte separation.
Description
Technical field
The utility model includes the non-ferrous metal metallurgical equipment, specifically a kind of side-blowing bath melting slag cleaning furnace.
Background technology
Nonferrous metal sulfide mineral matte smelting process has formed slag and sulfonium, because both structures are different, not mutually dissolving, and proportion is variant, heavier sulfonium particle passes slag blanket and is sunken to the bottom, molten bath and forms the sulfonium layer in specific sedimentation container, has realized and the separating of slag.The slag that the nonferrous metal sulfide mineral matte smelting obtains is generally fayalite (2FeOSiO
2) the slag type, traditional method of smelting (such as reverberatory furnace, electric furnace, shaft smelting) is little because of rate of driving, and the oxygen gesture of system is lower, the FeS in the concentrate and O
2Reaction generate FeO just can with the smooth slag making of flux, FeO continues to be oxidized to Fe
3O
4Phenomenon outstanding, so the character of slag is good, the separation of slag sulfonium only needs be incubated in the sedimentation electric furnace just can finish smoothly.And the development trend of modern matte smelting is the oxygen enrichment intensified smelting, and the output high-grade matte because system oxygen gesture is high, the sulphur gesture is low, causes Fe in the smelting slag
3O
4Content high.Because Fe
3O
4Fusing point (1597 ℃) high, than great, in slag, exist with Fe-O complicated ions state, measure when more when it, slag melting is raise, proportion increases, and has worsened the sedimentation separation of slag and sulfonium, and Fe
3O
4Also can be with the Ni in the slag
3S
2, Cu
2S is oxidized to NiO, Cu
2O has increased nickel, the copper chemolysis in slag, and it is high to cause waste to contain the valency metal, moreover, when melt temperature descends, Fe
3O
4Can separate out and be sunken to furnace bottom formation furnace accretion, harm normal operating.Existing slag electric dilution method is that slag is dropped in the electric furnace, zone between electrode adds reducing agent, vulcanizing agent carries out various reactions and adjusts the slag type, because need to stirring the molten bath, decanting zone of chemical reaction, the clarified separation condition of slag sulfonium is destroyed, reduce the formation of furnace accretion in order to improve furnace temperature in addition, the power of sedimentation electric furnace electrode input is high, the side effect that can produce the electric power agitation molten pool.Because there are these shortcomings in existing slag electric dilution technique, although increased power consumption, increased reducing agent consumption, the index that reduces the waste valuable metal does not reach requirement.Therefore, newly-built pyrogenic process nickel refiner and copper smelting by pyrometallurgy factory tend to the method that slag depletion adopts the slow cooling flotation.
The utility model content
The purpose of this utility model provides a kind of side-blowing bath melting slag cleaning furnace, and this electric furnace provides good dynamic conditions for slag carries out reduction-sulfurization.
Side-blowing bath melting slag cleaning furnace of the present utility model by grate, place the body of heater on the grate and form from the spray gun that the body of heater side wall inserts; Thermometer hole, charging aperture, flue, electrode hole, spy cinder notch are arranged at the top of body of heater, and the side wall of body of heater has spray gun oblique cutting mouth, puts the sulfonium mouth, and slag tap and discharging hole are arranged on the headwall of body of heater.
Electric furnace of the present utility model is horizontal round electric furnace, and burner hearth is divided into reducing zone and decanting zone, and two district UNICOMs together, and are but separate again on the function.Perforate on the side wall of reducing zone, be used for the spray gun oblique cutting is entered the molten bath, when the agent of solid coal base reduction was sent into the molten bath with high pressure draught by spray gun, the solid jet flow that side-blown forms carried out strong stirring to the molten bath, provides good dynamic conditions for slag carries out reduction-sulfurization.
Compared with prior art, the utlity model has following advantage:
(1) reducing zone in the electric furnace and decanting zone UNICOM together, but separate again on the function.Because slag viscosity is large, has gas to emit in reduction process, the phenomenon of will inevitably bubbling, the foamed slag that the reducing zone produces is accepted by the decanting zone of large volume, although the liquid level of reducing zone will rise, pernicious spray stove accident can not occur, job safety.
(2) Fe
3O
4Reduction slag making reaction only need under weakly reducing atmosphere, just can carry out.Side-blowing bath melting slag cleaning furnace of the present utility model provides good Chemical Kinetics condition easily, and Slag form regulation speed is fast, can satisfy the discharging system of last process.
(3) slag reduces by the molten bath, decrease the large Fe of fusing point high specific gravity in the slag
3O
4, avoid magnetic oxide in electric furnace, to form furnace accretion; After magnetic oxide reduces, the fusing point of slag, reduced viscosity, the power of electric furnace electrode input does not need to put forward furnace temperature, only needs insulation, can reduce the side effect of electric power agitation molten pool; The Slag form regulation of slag is finished before entering decanting zone (being electrode district), and unnecessary zone between each electrode adds reducing agent, vulcanizing agent carries out various reactions, for good condition has been created in the sedimentation separation of slag sulfonium.
(4) when the electric furnace reduction district carries out the magnetic oxide reduction, can be by adjusting reducing agent and the ratio of carrying air, the control section reducing agent carries out combustion reaction, replenishes the heat that reduction process consumes, and need not to arrange the insulation burner again, and system configuration is simplified.
Description of drawings
Fig. 1 is electric furnace front view sectional structure schematic diagram of the present utility model.
Fig. 2 is the plan structure schematic diagram of Fig. 1.
Fig. 3 is the A-A sectional structure schematic diagram of Fig. 1.
Fig. 4 is the B-B sectional structure schematic diagram of Fig. 1.
1-slag tap grate, 2-visits cinder notch, the 3-electrode hole, the 4-flue, 5-spray gun insert port, the 6-thermometer hole, the 7-charging aperture, the 8-body of heater, 9-grate, 10-are put the sulfonium mouth, 11-discharging hole, 12-spray gun, 13-molten bath reduced zone.
The specific embodiment
Shown in Fig. 1-4, side-blowing bath melting slag cleaning furnace of the present utility model by grate 9, place the body of heater 8 on the grate 9 and form from the spray gun 12 that the body of heater side wall inserts; There are thermometer hole 6, charging aperture 7, flue 4, electrode hole 3 in the top of body of heater, visit cinder notch 2, and the side wall of body of heater has spray gun oblique cutting mouth 5, puts sulfonium mouth 10, and slag tap 1 and discharging hole 11 are arranged on the headwall of body of heater.The electric stove hearth physical dimension is 5.5 * 22 meters of Φ (6 electrode) or Φ 4 * 13.5 meters (3 electrodes) etc.
This electric furnace is horizontal round electric furnace, burner hearth is divided into reducing zone and decanting zone, slag drops into the reducing zone, insert spray gun on the side wall of reducing zone and reducing agent is sprayed into the molten bath slag is carried out reduction-sulfurization, slag flows to the decanting zone behind Slag form regulation, at the electric current of the decanting zone electrode input heat insulation melt that has a resistance in slag blanket, the control melt has the suitable time of staying in the decanting zone, allow the slag sulfonium obtain multi_layer extraction, discharge sulfonium from the sulfonium mouth of putting of decanting zone, slag tap is discharged waste.
During work:
The charging aperture 7 that pending slag is arranged from the electric furnace reduction district drops in the stoves, and the spray gun 12 that inserts from the body of heater side wall sprays into reducing agent and (with compressed air or nitrogen reducing agent is sprayed into melt inside by spray gun) in slag.At coal base reduction agent and flux SiO
2Effect under main following reaction occurs:
2Fe
3O
4?+3SiO
2?+?C=3(2?FeO·SiO
2)+CO
2
2Fe
3O
4?+3SiO
2?+2CO=3(2?FeO·SiO
2)+2CO
2
CO
2+C=2CO
3NiO+2S
2-=Ni
3S
2+3O
2-
Cu
2O+S
2-=Cu
2S+O
2-
Above-mentioned reaction finish the optimization that has namely realized the slag type.The flue gas of output is discharged from flue 4 in the process.Slag flows to decanting zone (electrode district), and the electrode pair melt that inserts from electrode hole 3 is incubated, and melt obtains the low sulfonium of lower floor and the waste on upper strata through clarified separation, and low sulfonium is discharged from putting sulfonium mouth 10, and waste is discharged from slag tap 1.Two slag tap are set put the sulfonium mouth with two, respectively be used alternatingly flatly, easy access is safeguarded.In operation process, survey melt temperatures by thermometer hole 6, by visiting cinder notch 2 detectable liquid level and samplings; The effect of discharging hole 11 is when needing shutdown maintenance, can all emit melt in the stove.
Operation process provides heat by the power of electrode input and the imperfect combustion reaction of reducing agent, and the control furnace temperature is at 1200 ℃～1400 ℃.
Horizontal its inner lining refractory block of round electric furnace is difficult for dropping, builds by laying bricks or stones conveniently; The burner hearth physical dimension is conducive to uniform distribution of temperature field.
Claims (2)
1. side-blowing bath melting slag cleaning furnace, it is characterized in that this slag cleaning furnace by grate, place the body of heater on the grate and the spray gun that inserts from the body of heater side wall forms; Thermometer hole, charging aperture, flue, electrode hole, spy cinder notch are arranged at the top of body of heater, and the side wall of body of heater has reducing agent spray gun oblique cutting mouth, puts the sulfonium mouth, and slag tap and discharging hole are arranged on the headwall of body of heater.
2. side-blowing bath melting slag cleaning furnace according to claim 1 is characterized in that electric stove hearth is of a size of 4 * 13.5 meters of 5.5 * 22 meters of Φ or Φ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220351405.6U CN202692671U (en) | 2012-07-19 | 2012-07-19 | Melting and depleting electric furnace of side-blowing melting pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220351405.6U CN202692671U (en) | 2012-07-19 | 2012-07-19 | Melting and depleting electric furnace of side-blowing melting pool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202692671U true CN202692671U (en) | 2013-01-23 |
Family
ID=47548279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220351405.6U Expired - Fee Related CN202692671U (en) | 2012-07-19 | 2012-07-19 | Melting and depleting electric furnace of side-blowing melting pool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202692671U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106367605A (en) * | 2016-08-31 | 2017-02-01 | 河南豫光金铅股份有限公司 | Side-blown depletion copper smelting slag production method |
| CN110656254A (en) * | 2019-10-12 | 2020-01-07 | 中国恩菲工程技术有限公司 | Device and method for top-blown nickel smelting |
-
2012
- 2012-07-19 CN CN201220351405.6U patent/CN202692671U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106367605A (en) * | 2016-08-31 | 2017-02-01 | 河南豫光金铅股份有限公司 | Side-blown depletion copper smelting slag production method |
| CN110656254A (en) * | 2019-10-12 | 2020-01-07 | 中国恩菲工程技术有限公司 | Device and method for top-blown nickel smelting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20140719 |
|
| EXPY | Termination of patent right or utility model |