CN104232907A - Top-side blowing parameter control method of depletion electric furnace - Google Patents
Top-side blowing parameter control method of depletion electric furnace Download PDFInfo
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- CN104232907A CN104232907A CN201410450989.6A CN201410450989A CN104232907A CN 104232907 A CN104232907 A CN 104232907A CN 201410450989 A CN201410450989 A CN 201410450989A CN 104232907 A CN104232907 A CN 104232907A
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- slag
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000007664 blowing Methods 0.000 title abstract description 6
- 239000002893 slag Substances 0.000 claims abstract description 122
- 239000007921 spray Substances 0.000 claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 238000011946 reduction process Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims description 56
- 239000002551 biofuel Substances 0.000 claims description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 230000002829 reductive effect Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000012141 concentrate Substances 0.000 claims description 4
- 238000007654 immersion Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000024121 nodulation Effects 0.000 abstract 1
- 238000009853 pyrometallurgy Methods 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- 238000010790 dilution Methods 0.000 description 5
- 239000012895 dilution Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 241000722270 Regulus Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 101000993059 Homo sapiens Hereditary hemochromatosis protein Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention relates to a top-side blowing parameter control method of a depletion electric furnace and belongs to the technical field of thermometallurgy. Firstly, a depletion electric furnace is divided into three regions which are a front region, a middle region and a rear region respectively; a production mode of centralized reduction and centralized emission is adopted; after the depletion electric furnace stops slagging and matte discharging operations, the blowing time and the spray gun quantity are determined according to the estimated charging rate and instant capacity of the electric furnace in the reduction process; another 30min is reserved for the sedimentation; and then the blowing mode is determined according to the situation whether slag returns within five hours in the three regions and the actual production conditions including average magnetic iron content in the regions and the temperature of the regions. The top-side blowing is controlled through the actual condition of the depletion electric furnace in the top pyrometallurgy process, and the problem of serious nodulation of spray guns caused by adoption of a pure immersion top-blown manner when the viscosity of a clinker layer of the depletion electric furnace is high is solved.
Description
Technical field
The present invention relates to a kind of slag cleaning furnace top side and blow parameter control method, belong to field of thermometallurgical technology.
Background technology
In nonferrous smelting, apply oxygen enrichment intensified smelting technology more and more, make enrichment in slag Fe
3o
4, this can increase the viscosity of slag, is unfavorable for being separated of copper matte regulus and slag in subsequent technique, thus causes Copper in Slag rate to raise, cause the waste of Precious Metals Resources, and more easily cause slagging scorification.For reducing Copper in Slag rate, improve the yield of copper matte regulus, after oxygen enrichment intensified smelting, slag by dilution, must reduce copper content in slag.
At present, in electric dilution slag, generally add the solid reduction materials such as coke, coal and charcoal and reduce, its shortcoming is that reduction efficiency is low and energy consumption is high.Adopt the reduction efficiency of the gaseous reducing agents such as Sweet natural gas, coal gas or liquefied gas high, but it also at high temperature have larger potential safety hazard by geographical conditions restriction.
The patent No. be ZL200510010980.4 patent discloses one " slag cleaning furnace top-blown immersion technology ", this technology adds the mixture of pressurized air formation for reductive agent with diesel oil or diesel oil, when in electric furnace slag, magnetic oxygenated iron level reaches 8 ~ 12%, controlling oil atomizer gun oil mass is 80 ~ 130 ls/h, is controlled to spray into melt after oil atomizer gun being inputted DCS system by automatic regulating valve; Allocate pressurized air into by reducing degree and furnace atmosphere and regulate air quantity, compression Boiler pressure control is at 600 ~ 1100Nm
3/ hour, reductive agent is delivered to the pipeline that automatic regulating valve controls, pipeline is connected with oil atomizer gun, and oil atomizer gun from the insertion molten bath submergence of body of heater top in the melt, adopts the mode of top blast that injection of reducing agent is blown into melt and reduces to martial ethiops.This invention substantially increases the reduction efficiency of reductive agent, effectively improves the mobility of electric furnace slag, reduces Copper Loss in Slag from Electric, and can alleviate, processes dross in stove, effectively guarantees carrying out smoothly of slag cleaning furnace technique.But when after the return slag operation that converter is carried out slag cleaning furnace, Fe in slag cleaning furnace can be caused
3o
4skewness, the slag blanket Fe of distance converter return slag chute immediate area
3o
4content can up to 25% ~ 30%.This can cause slag layer viscosity sharply to increase, and carries out immersed top-blown restoring operation and cause spray gun to block very easily at short notice in this high viscosity slag, increases and abandons rifle rate, is unfavorable for carrying out smoothly and cost control of production.
Summary of the invention
For above-mentioned prior art Problems existing and deficiency, the invention provides a kind of slag cleaning furnace top side and blow parameter control method.The present invention blows into row by practical situation in the pyrometallurgical smelting process of slag cleaning furnace top to top side and controls, and solve the simple immersed top-blown situation that spray gun dross is serious when slag cleaning furnace molten slag layer viscosity higher operating mode, the present invention is achieved through the following technical solutions.
Parameter control method is blown in a kind of slag cleaning furnace top side, and its concrete steps are as follows:
(1) first slag cleaning furnace is divided into three regions, wherein three regions are stokehold district, Lu Zhongqu and stove back zone, the mode of production adopts concentrates reduction to concentrate discharge, after slag cleaning furnace stops slagging and puts matte operation, according to estimating in reduction process that inlet amount and the instant capacity of electric furnace determine winding-up time and spray gun quantity, and guarantee to stay more than the halfhour settling time;
(2) if the arbitrary region within 5 hours in oriented slag cleaning furnace three regions has return slag to operate, or before winding-up after testing in slag cleaning furnace in certain region molten slag layer average magnetic iron level higher than 20%, or slag cleaning furnace certain region slag surface medial temperature interior is lower than 1000 DEG C, a kind of in above-mentioned three kinds of situations, in this region and adjacent area adopt the mode of side-blown to carry out reduction winding-up, injection method reference (2), (3) in other regions, (4) situation determine;
(3) if do not have return slag to operate to the arbitrary region in slag cleaning furnace three regions within 5 hours, and before winding-up after testing in slag cleaning furnace in certain region molten slag layer average magnetic iron level higher than 15% but lower than 20%, or slag cleaning furnace certain region slag surface medial temperature interior is higher than 1000 DEG C but lower than 1200 DEG C, a kind of in above-mentioned two situations, adopts the mode of side-blown to carry out reduction winding-up in this region, other region injection methods with reference to (2), (3), (4) situation determine;
(4) if do not have return slag to operate to the arbitrary region in slag cleaning furnace three regions within 5 hours, and before winding-up after testing in slag cleaning furnace in certain region molten slag layer average magnetic iron level lower than 15%, or slag cleaning furnace certain region slag surface medial temperature interior is higher than 1200 DEG C, a kind of in above-mentioned two situations, adopts the mode of top blast to carry out reduction winding-up in this region, injection method with reference to (2), (3), (4) situation determine; When the adjacent area in the region one of in these two kinds of situations meets (2), then this region adopts side-blown mode;
(5) except the situation that above-mentioned (2), (3), (4) occur, slag cleaning furnace is divided into three regions all to adopt side-blown mode.
Described slag cleaning furnace top side is blown in parameter control method and is used the mixture of biofuel or biofuel and high pressure nitrogen for reductive agent, answers≤2.5L by oily total amount with the dregs of fat ratio of slag total amount
oil/ ton
slag.
Described biofuel viscosity≤10mm
2/ s, carbon content>=15%, water-content≤6%, flash-point≤130 DEG C.
The invention has the beneficial effects as follows: the present invention by use top blast, side-blown and top, side-blown mixed injection mode carry out strengthening the blowing of reduction to slag in slag cleaning furnace; solve the simple immersed top-blown situation that spray gun dross is serious when slag cleaning furnace molten slag layer viscosity higher operating mode; do not affecting the situation of reductive agent straying quatity; effectively protect spray gun; extend spray gun work-ing life, winding-up is produced more stable.
Accompanying drawing explanation
Fig. 1 is present invention process schema.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment 1
As shown in Figure 1, certain enterprise uses rectangle slag cleaning furnace to carry out Copper making dilution technique, to be divided into by slag cleaning furnace in stokehold, stove and three regions after stove.When 10, electric furnace stops slagging, slagging when estimating 12.When 8, converter is once to slag cleaning furnace return slag, and return slag chute is positioned at stokehold district, after testing stokehold district molten slag layer mean F e
3o
4content is 22%, Lu Zhong district molten slag layer mean F e
3o
4content is 17%, stove back zone molten slag layer mean F e
3o
4content is 12%.Adopt in Ji Luzhong district of stokehold district side-blown mode that biofuel is blown into molten slag layer and is mixed into nitrogen and form oil-gas mixture, adopt in stove back zone top blast mode that biofuel is blown into molten slag layer.According to slag cleaning furnace charging plan and current slag amount in 2 hours futures, stokehold district uses 4 side-blown spray guns, and Lu Zhong district uses 2 side-blown spray guns, and stove back zone uses 2 top-blown spray guns, is arranged symmetrically with.Side-blown biofuel flow is 80L/h, biofuel viscosity≤10mm
2/ s, carbon content>=15%, water-content≤6%, flash-point≤130 DEG C, nitrogen flow is 0.8Nm
3/ h, top blast biofuel flow is 100L/h.Start winding-up when electric furnace stops slagging in 15 minutes, the winding-up time is 1 hour, carries rifle and leave standstill 45 minutes, electric furnace slagging in 12 time after winding-up terminates.The mixed injection strengthening reduction process of this top, side-blown terminates.The winding-up of whole process spray gun is stable, and top, side-blown spray gun all occur, at high Fe without stifled rifle phenomenon
3o
4after the winding-up of concentration areas changes side-blown into by top blast, service life of lance brought up to 2 hours by original 15 minutes, and dross diameter is less than 10cm.
Embodiment 2
As shown in Figure 1, certain enterprise uses rectangle slag cleaning furnace to carry out Copper making parquets technique, to be divided into by slag cleaning furnace in stokehold, stove and three regions after stove.When 8, electric furnace stops slagging, slagging when estimating 10.When 3, converter is once to slag cleaning furnace return slag, and return slag chute is positioned at stokehold district, after testing stokehold district molten slag layer mean F e
3o
4content is 19%, Lu Zhong district molten slag layer mean F e
3o
4content is 17%, stove back zone molten slag layer mean F e
3o
4content is 15%.According to slag cleaning furnace charging plan and current slag amount in 2 hours futures, stokehold district uses 2 side-blown spray guns, and Lu Zhong district uses 2 side-blown spray guns, and stove back zone uses 2 side-blown spray guns, is arranged symmetrically with.Side-blown biofuel flow is 80L/h, biofuel viscosity≤10mm
2/ s, carbon content>=15%, water-content≤6%, flash-point≤130 DEG C, nitrogen flow is 1.30Nm
3/ h.After electric furnace stops slagging, start winding-up in 15 minutes, the winding-up time is 1.5 hours, carries rifle and leave standstill 30 minutes, electric furnace slagging in 10 time after winding-up terminates.The strengthening reduction process of this side-blown terminates.The winding-up of whole process spray gun is stable, and side-blown spray gun occurs without stifled rifle phenomenon, and service life of lance brought up to 4 hours by original 30 minutes, and dross diameter is less than 5cm.
Embodiment 3
As shown in Figure 1, certain enterprise uses rectangle slag cleaning furnace to carry out Copper making dilution technique, to be divided into by slag cleaning furnace in stokehold, stove and three regions after stove.When afternoon 4, electric furnace stops slagging, 30 points of slagging during expectation afternoon 6.In 5 hours, converter is not to slag cleaning furnace return slag, after testing stokehold district, Lu Zhongqu, stove back zone molten slag layer mean F e
3o
4content is respectively 14%, 11% and 9%.In stokehold district, Lu Zhongqu and stove back zone all adopt the mode of top blast that biofuel is blown into molten slag layer.According to slag cleaning furnace charging plan and current slag amount in 2 hours futures, each district all only adopts 2 top-blown spray guns, and employing is arranged symmetrically with.Top blast biofuel flow is 60L/h, biofuel viscosity≤10mm
2/ s, carbon content>=15%, water-content≤6%, flash-point≤130 DEG C, start winding-up when electric furnace stops slagging in 15 minutes, the winding-up time is 1 hour 45 minutes, and carry rifle after winding-up terminates and leave standstill 30 minutes, electric furnace is 30 points of slagging in afternoon 6 time.This top blast strengthening reduction process terminates.The winding-up of whole process spray gun is stable, and top-blown spray gun occurs without stifled rifle phenomenon, and dross diameter is less than 20cm, and service life of lance was increased to 3 hours by 1 hour.
Embodiment 4
As shown in Figure 1, certain enterprise uses rectangle slag cleaning furnace to carry out Copper making dilution technique, to be divided into by slag cleaning furnace in stokehold, stove and three regions after stove.When the morning 12, electric furnace stops slagging, slagging during expectation afternoon 14.The morning, electric furnace electrode power failure was safeguarded, stokehold district slag surface medial temperature is 990 DEG C after testing, and Lu Zhong district slag surface medial temperature is 1220 DEG C, and stove back zone slag surface medial temperature is 1300 DEG C.Adopt in Ji Luzhong district of stokehold district side-blown mode that biofuel is blown into molten slag layer and is mixed into nitrogen and form oil-gas mixture, adopt in stove back zone top blast mode that biofuel is blown into molten slag layer.According to slag cleaning furnace charging plan and current slag amount in 2 hours futures, stokehold district uses 2 side-blown spray guns, and Lu Zhong district uses 2 side-blown spray guns, and stove back zone uses 2 top-blown spray guns, is arranged symmetrically with.Side-blown biofuel flow is 90L/h, and nitrogen flow is 1.35Nm
3/ h, top blast biofuel flow is 100L/h, biofuel viscosity≤10mm
2/ s, carbon content>=15%, water-content≤6%, flash-point≤130 DEG C, start winding-up when electric furnace stops slagging in 15 minutes, the winding-up time is 1 hour, carries rifle and leave standstill 45 minutes, electric furnace slagging in 14 time after winding-up terminates.The mixed injection strengthening reduction process of this top, side-blown terminates.The winding-up of whole process spray gun is stable, and top, side-blown spray gun all occur without stifled rifle phenomenon, and dross diameter is less than 15cm, and service life of lance brought up to 4 hours by original 1.5 hours.
By reference to the accompanying drawings the specific embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (3)
1. a parameter control method is blown in slag cleaning furnace top side, it is characterized in that concrete steps are as follows:
(1) first slag cleaning furnace is divided into three regions, wherein three regions are stokehold district, Lu Zhongqu and stove back zone, the mode of production adopts concentrates reduction to concentrate discharge, after slag cleaning furnace stops slagging and puts matte operation, according to estimating in reduction process that inlet amount and the instant capacity of electric furnace determine winding-up time and spray gun quantity, and guarantee to stay more than the halfhour settling time;
(2) if the arbitrary region within 5 hours in oriented slag cleaning furnace three regions has return slag to operate, or before winding-up after testing in slag cleaning furnace in certain region molten slag layer average magnetic iron level higher than 20%, or slag cleaning furnace certain region slag surface medial temperature interior is lower than 1000 DEG C, a kind of in above-mentioned three kinds of situations, in this region and adjacent area adopt the mode of side-blown to carry out reduction winding-up, injection method reference (2), (3) in other regions, (4) situation determine;
(3) if do not have return slag to operate to the arbitrary region in slag cleaning furnace three regions within 5 hours, and before winding-up after testing in slag cleaning furnace in certain region molten slag layer average magnetic iron level higher than 15% but lower than 20%, or slag cleaning furnace certain region slag surface medial temperature interior is higher than 1000 DEG C but lower than 1200 DEG C, a kind of in above-mentioned two situations, adopts the mode of side-blown to carry out reduction winding-up in this region, other region injection methods with reference to (2), (3), (4) situation determine;
(4) if do not have return slag to operate to the arbitrary region in slag cleaning furnace three regions within 5 hours, and before winding-up after testing in slag cleaning furnace in certain region molten slag layer average magnetic iron level lower than 15%, or slag cleaning furnace certain region slag surface medial temperature interior is higher than 1200 DEG C, a kind of in above-mentioned two situations, adopts the mode of top blast to carry out reduction winding-up in this region, injection method with reference to (2), (3), (4) situation determine; When the adjacent area in the region one of in these two kinds of situations meets (2), then this region adopts side-blown mode;
(5) except the situation that above-mentioned (2), (3), (4) occur, slag cleaning furnace is divided into three regions all to adopt side-blown mode.
2. parameter control method is blown in slag cleaning furnace top side according to claim 1, it is characterized in that: described slag cleaning furnace top side is blown in parameter control method and used the mixture of biofuel or biofuel and high pressure nitrogen for reductive agent, answer≤2.5L by oily total amount with the dregs of fat ratio of slag total amount
oil/ ton
slag.
3. parameter control method is blown in slag cleaning furnace top side according to claim 2, it is characterized in that: described biofuel viscosity≤10mm
2/ s, carbon content>=15%, water-content≤6%, flash-point≤130 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410450989.6A CN104232907B (en) | 2014-09-05 | Method for controlling top side blowing parameters of dilution furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410450989.6A CN104232907B (en) | 2014-09-05 | Method for controlling top side blowing parameters of dilution furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104232907A true CN104232907A (en) | 2014-12-24 |
| CN104232907B CN104232907B (en) | 2017-01-04 |
Family
ID=
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148727A (en) * | 2016-08-31 | 2016-11-23 | 浙江大学宁波理工学院 | A kind of refining furnace |
| CN107269855A (en) * | 2016-04-06 | 2017-10-20 | 广西科技大学 | Double-layer flap valve blanking system |
| CN111850314A (en) * | 2020-07-30 | 2020-10-30 | 中国恩菲工程技术有限公司 | Oxygen-blown smelting process and system for electric furnace |
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| JPH09227925A (en) * | 1996-02-20 | 1997-09-02 | Nippon Steel Corp | Method for melting ferrous scrap |
| CN1730673A (en) * | 2005-08-26 | 2006-02-08 | 云南铜业股份有限公司 | Slag cleaning furnace top-blown immersion technology |
| KR20080004171A (en) * | 2006-07-05 | 2008-01-09 | 주식회사 포스코 | A structure for mounting auxiliary fuel supplying burners in an electric furnace |
| CN103409575A (en) * | 2013-08-13 | 2013-11-27 | 昆明理工大学 | Reducing agent for slag cleaning furnace top-blown immersion blowing reduction |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09227925A (en) * | 1996-02-20 | 1997-09-02 | Nippon Steel Corp | Method for melting ferrous scrap |
| CN1730673A (en) * | 2005-08-26 | 2006-02-08 | 云南铜业股份有限公司 | Slag cleaning furnace top-blown immersion technology |
| KR20080004171A (en) * | 2006-07-05 | 2008-01-09 | 주식회사 포스코 | A structure for mounting auxiliary fuel supplying burners in an electric furnace |
| CN103409575A (en) * | 2013-08-13 | 2013-11-27 | 昆明理工大学 | Reducing agent for slag cleaning furnace top-blown immersion blowing reduction |
Non-Patent Citations (1)
| Title |
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| 韦其晋等: "侧吹熔炼铜渣的直流电贫化研究", 《有色金属(冶炼部分)》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269855A (en) * | 2016-04-06 | 2017-10-20 | 广西科技大学 | Double-layer flap valve blanking system |
| CN106148727A (en) * | 2016-08-31 | 2016-11-23 | 浙江大学宁波理工学院 | A kind of refining furnace |
| CN111850314A (en) * | 2020-07-30 | 2020-10-30 | 中国恩菲工程技术有限公司 | Oxygen-blown smelting process and system for electric furnace |
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