CN101845554A - Method for melting copper by using waste copper and concentrate of copper sulfide as raw materials - Google Patents
Method for melting copper by using waste copper and concentrate of copper sulfide as raw materials Download PDFInfo
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- CN101845554A CN101845554A CN201010199770A CN201010199770A CN101845554A CN 101845554 A CN101845554 A CN 101845554A CN 201010199770 A CN201010199770 A CN 201010199770A CN 201010199770 A CN201010199770 A CN 201010199770A CN 101845554 A CN101845554 A CN 101845554A
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- Prior art keywords
- copper
- melting
- slag
- concentrate
- mixture
- Prior art date
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000010949 copper Substances 0.000 title claims abstract description 60
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000002844 melting Methods 0.000 title claims abstract description 35
- 230000008018 melting Effects 0.000 title claims abstract description 33
- 239000012141 concentrate Substances 0.000 title claims abstract description 31
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 239000002994 raw material Substances 0.000 title claims abstract description 14
- 239000002699 waste material Substances 0.000 title abstract 6
- 239000000203 mixture Substances 0.000 claims abstract description 72
- 239000002893 slag Substances 0.000 claims abstract description 35
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000001301 oxygen Substances 0.000 claims abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000446 fuel Substances 0.000 claims abstract description 10
- 230000001590 oxidative effect Effects 0.000 claims abstract description 8
- 238000010791 quenching Methods 0.000 claims abstract description 7
- 230000000171 quenching effect Effects 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 3
- 229910001369 Brass Inorganic materials 0.000 claims description 43
- 239000010951 brass Substances 0.000 claims description 43
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 6
- 239000006004 Quartz sand Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 239000003034 coal gas Substances 0.000 claims description 4
- 239000000571 coke Substances 0.000 claims description 4
- 239000003500 flue dust Substances 0.000 claims description 4
- 239000000295 fuel oil Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000011044 quartzite Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000002802 bituminous coal Substances 0.000 claims description 2
- 239000011280 coal tar Substances 0.000 claims description 2
- 239000013065 commercial product Substances 0.000 claims description 2
- 239000002283 diesel fuel Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000003345 natural gas Substances 0.000 claims description 2
- 239000004449 solid propellant Substances 0.000 claims description 2
- 238000007670 refining Methods 0.000 abstract description 8
- 239000000779 smoke Substances 0.000 abstract description 6
- 238000003756 stirring Methods 0.000 abstract description 6
- 239000000155 melt Substances 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 241000722270 Regulus Species 0.000 description 12
- 238000003723 Smelting Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000007599 discharging Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000005864 Sulphur Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for melting copper by using waste copper and concentrate of copper sulfide as raw materials. The method comprises the following steps of: in a mass ratio of the copper content of waste copper to the copper content of the concentrate of copper sulfide of 1:1.3-10, mixing the waste copper and the concentrate of copper sulfide, adding a raw material containing silicon dioxide into the mixture, recycling, continuously putting the mixture into a melting pond, adding fuel and controlling the temperature of the melt to be between 1,100 and 1,300 DEG C, charging oxygen-enriched air, of which the volume concentration is 23 to 85 percent, in the melting pond, and stirring and melting the materials in an oxidizing atmosphere in the melting pond until slag and copper matte are separated by melting; transferring the separated copper matte to an air refining procedure for air refining to obtain raw copper products; transferring the slag to a common electric furnace for melting to further lower the copper content of the slag to below 0.5 percent, and performing water quenching of the slag; and transferring smoke to an acid-making procedure for preparing sulfuric acid. By the method, a large amount of waste copper can be treated, and simultaneously due to the adoption of the waste copper, the slag type of the concentrate of copper sulfide in melting is improved.
Description
Technical field
The present invention relates to a kind of method of melting copper, especially a kind of is the method for raw material melting copper with useless composition brass and copper sulfide concentrate, belongs to the non-ferrous metallurgy technology field.
Technical background
The present pyrometallurgical smelting process of copper sulfide concentrate is: (roasting →) melting → blowing → refining, the melting type of furnace that adopts is reverberatory furnace or electric furnace traditionally, and the emerging type of furnace has flash stove, noranda furnace, Ai Salu, Ao Simaite stove, Wa Niukefu stove, Te Niente stove, basic husband's Saite stove, silver stove and mountain, mouth of a river stove or the like.In recent years along with the employing of reinforcement, the especially oxygen enrichment of smelting process, make it no matter is the Fe that adopts in the slag that stove produced of top blast, bottom blowing or side-blown
3O
4Content rolls up, sometimes up to about 15%, thus the subsequent disposal difficulty of increase slag, and copper content raises in the slag, and the metal direct yield and the rate of recovery all are affected.
Along with social development, the quantity of useless composition brass increases sharply, and seeming as its status of secondary resource becomes more and more important.Height according to useless composition brass grade adopts one-stage process, two-phase method or three-stage process technology to handle usually.One-stage process is that useless composition brass of higher-grade or solid blister copper are added the anode furnace refining, takes off through fusing, oxidation and send electrorefining after operations such as assorted, reduction, casting obtain positive plate, and perhaps the pole tough pitch after the reduction is directly used in and makes bar, line.This method only can be handled the useless composition brass of higher-grade (generally＞94%Cu) to the useless restricted requirement of composition brass grade.Two-phase method is that useless composition brass adding blast furnace or converter are smelted into blister copper, and blister copper is cast into positive plate and send electrolysis after the anode furnace refining.This method is more much lower than one-stage process to useless composition brass grade requirement, but energy consumption is higher, pollutes bigger.Three-stage process is to send useless composition brass to blast furnace smelting to become black copper, black copper is sent into bessemerized time blister copper afterwards, more inferior blister copper is sent into reverberatory furnace and carries out refining.This method is to the grade adaptability strong (＞8%Cu gets final product) of useless composition brass, but the process complexity, equipment is many, investment is big, and environmental protection pressure is big.
Useless composition brass is typically smelted Kaldo stove melting → tilting furnace refining that flow process has Italian Bo Temagehela factory to adopt abroad, Kaldo stove melting → rotary kiln refining that U.S. Ke Maike factory adopts, the blast furnace smelting that American South line Garstang, John factory adopts → bessemerize → the tilting furnace refinery practice.There is the Kaldo stove melting of river copper group to carry out purified technology then at home.It is low that the useless composition brass technology of Kaldo stove processing has combustion intensity, batch operation, and operation is frequent, and exhaust gas volumn and smoke components are periodical change, and furnace campaign is shorter, the more high deficiency of cost.
Summary of the invention
In view of the state of the art that useless composition brass is smelted and copper sulfide concentrate is smelted, it is the method for main raw material melting copper with useless composition brass and copper sulfide concentrate that the present invention proposes a kind of.
The present invention carries out bath smelting with copper sulfide concentrate and useless composition brass mixture under the oxidizing atmosphere condition, make copper sulfide concentrate the decomposition identical with the physicochemical change of traditional technology, fusing, oxidation take place in entering the molten bath process, make sulfonium, slag making; Useless composition brass is melted in entering the molten bath process, because molten metal copper than great, enter the molten bath through the slag blanket drippage easily, and under the stirring condition of molten bath following reaction takes place:
2Cu+FeS+Fe
3O
4+ 2SiO
2=Cu
2S+2 (2FeOSiO
2) or
4Cu+2FeS+O
2+SiO
2＝2Cu
2S+2FeO·SiO
2
Common impurity Pb in the useless simultaneously composition brass, Zn, Sn, Al, Fe etc. are also simultaneously separated, remove from flue gas with the form of PbO as Pb.
The present invention finishes by following technical proposal: a kind of is the method for raw material melting copper with useless composition brass and copper sulfide concentrate, it is characterized in that comprising:
Raw material is mixed:
Press useless composition brass copper content: the mass ratio of copper sulfide concentrate copper content=1: 1.3～10, the composition brass that will give up mixes with copper sulfide concentrate;
In mixture, add and contain SiO
2The Fe of raw material to the mixture: SiO
2=1: 1.1～1.7 mass ratioes;
Press 0～8% of mixture quality, returning charge is joined in the compound;
Melting:
The mixture for preparing is dropped in the molten bath, add fuel control melt temperature to 1100～1300 ℃ again, and to blast volumetric concentration in the molten bath be 23%～85% oxygen-rich air, make material stir-melting in the molten bath of oxidizing atmosphere, isolate slag, matte until melting, isolated matte gets the blister copper product after sending conventional blowing operation to blow; Slag send conventional electrosmelting further to reduce in the slag below the copper content to 0.5%, carries out Water Quenching afterwards; Flue gas send the relieving haperacidity operation to make sulfuric acid.
Described useless composition brass is commercial product.
Described returning charge is meant that the copper content that obtains is 2～15% flue dust or blowing slag from melting, converting process.
The mode that described oxygen-rich air blasts in the molten bath is top blast of the prior art, bottom blowing or side-blown mode.
The described SiO that contains
2Raw material be in quartzite, the quartz sand one or more.
The fuel of described adding is one or more in bituminous coal, hard coal or the coke in the solid fuel, perhaps is coal gas or in the natural gas one or more in the geseous fuel, perhaps is in the heavy oil, diesel oil, coal tar in the liquid fuel one or more.
Compare with known technology, the present invention has the following advantages:
(1) melting by mixtures such as useless composition brass and copper sulfide concentrates, can directly carry out second stage employ to useless composition brass resource, save the useless composition brass treatment system (reducing investment) of the identical scale of a cover simultaneously, working cost (comprising depreciation, power, labor force's expense, overheads etc.) also greatly reduces;
(2) the useless composition brass in the mixture contains copper grade restrictive requirement useless to it, and better with low-grade useless composition brass (between the copper content 8%～60%) economic benefit;
(3) handling the mixture that contains useless composition brass can make metallic copper separate more thoroughly with other foreign metal, more optimize;
(4) useless composition brass and the melting of copper sulfide concentrate mixture can improve the deironing rate, and the matte grade is obviously raise, and reach 55%～76% Cu;
(5) the mixture melting has made full use of sulphur in the concentrate and the heat energy in the fusion process, has also utilized the kinetic energy of melt whipping process, makes that the stove processing power improves, energy consumption reduces.
Embodiment
Embodiment 1
With useless composition brass and 200000t cupric 20%, the iron content 19.7% of handling the average cupric 50% of 40000t year, contain SiO
211% copper sulfide concentrate is an example, specifically:
Composition brass, copper sulfide concentrate, quartz sand (SiO will give up
2Content 85%), returning charge (flue dust of cupric 3%) is by 1: 5: 0.18: 0.1 mass ratio mixes, and this mixture is put in the top blast stove by 40 tons/h, is that 68% oxygen-rich air is by 9800Nm with volumetric concentration
3The consumption of/h blasts the molten bath with spray gun, make melt keep the violent stirring state, and add temperature to 1170～1210 ℃ of melt in hard coal (27MJ/kg) the control stove, sulphur and ferro element and the oxygen generation intensive oxidizing reaction that blasts in the melt, the reaction heat that produces is the main source of smelting heat income, the insufficient part of heat energy is by the hard coal fuel refreshment that adds, in the matte smelting process, copper matte regulus that produces in the molten bath and the blend melt of slag interruption are put into the sedimentation electric furnace from the top blast fire grate, promptly discharge and want just to enter in 40 minutes at interval discharging next time after 30 minutes, copper matte regulus and slag are divided into levels because of difference of specific gravity in electric furnace, lower floor's copper matte regulus grade of output is about 74%, send converter carry out routine blow the blister copper product, slag continue in electric furnace melting to copper content below 0.5%, carrying out Water Quenching after the discharge can fully utilize, and flue gas send smoke processing system to make sulfuric acid.
Embodiment 2
Year handle 300,000 tons of average cuprics 15% useless composition brass and 500,000 tons of cuprics 21%, iron content 22.6%, contain SiO
29% copper sulfide concentrate embodiment:
Useless composition brass, copper sulfide concentrate, quartzite (SiO
2Content 90%), returning charge (flue dust of cupric 2.8%) is by 1: 1.66: 0.14: 0.05 mass ratio mixes, and this mixture charge is put in the ISA stove by 120 tons/h, is that the oxygen-rich air of 72% (volumetric concentration) is pressed 13300Nm with oxygen level
3The amount of/h blasts in the molten bath, make melt keep the violent stirring state, and the temperature of the interior melt of adding coke control stove is at 1160 ℃～1200 ℃, sulphur and ferro element and the oxygen generation intensive oxidizing reaction that blasts in the melt, the reaction heat that produces is the main source of smelting heat income, the insufficient part of heat energy is replenished by the coke that adds, the copper matte regulus that produces in the molten bath and the blend melt of slag are discharged to the sedimentation electric furnace, employing is interrupted the system of emitting matte from the slag notch continuous discharging slag with from the matte escape orifice, the discharging matte wants just to enter in 40 minutes at interval discharging next time after 25 minutes, copper matte regulus is separated because of difference of specific gravity with slag in electric furnace, the copper matte regulus grade about 68% of output, send converter carry out routine blow the blister copper product, slag continue melting to copper content below 0.5%, carrying out Water Quenching can fully utilize, and flue gas send smoke processing system to make sulfuric acid.
Embodiment 3
Year handle 300,000 tons of average cuprics 15% useless composition brass and 500,000 tons of cuprics 21%, iron content 22.6%, contain SiO
29% copper sulfide concentrate example.
By useless composition brass copper content: the mass ratio of copper sulfide concentrate copper content=1: 1.3, the composition brass that will give up mixes with copper sulfide concentrate; Press the Fe in the mixture: SiO
2=1: 1.1 mass ratioes add quartzite in mixture; This mixture is put in the ISA stove by 120 tons/h, is that the oxygen-rich air of 85% (volumetric concentration) is pressed 13300Nm with oxygen level
3The amount of/h blasts in the molten bath, make melt keep the violent stirring state, and add the temperature to 1160 ℃ of melt in the heavy oil control stove～1200 ℃, sulphur and ferro element and the oxygen generation intensive oxidizing reaction that blasts in the melt, the reaction heat that produces is the main source of smelting heat income, the insufficient part of heat energy is replenished by the heavy oil that adds, the copper matte regulus that produces in the molten bath and the blend melt of slag are discharged to the sedimentation electric furnace, employing is interrupted the system of emitting matte from the slag notch continuous discharging slag with from the matte escape orifice, the discharging matte wants just to enter in 40 minutes at interval discharging next time after 25 minutes, copper matte regulus is separated because of difference of specific gravity with slag in electric furnace, the copper matte regulus grade about 68% of output, send converter carry out routine blow the blister copper product, slag continue melting to copper content below 0.5%, carrying out Water Quenching can fully utilize, and flue gas send smoke processing system to make sulfuric acid.
Embodiment 4
Year handle the average cupric 50% of 40000t useless composition brass and 200000t cupric 20%, iron content 19.7%, contain SiO
211% copper sulfide concentrate example.
By useless composition brass copper content: the mass ratio of copper sulfide concentrate copper content=1: 10, the composition brass that will give up mixes with copper sulfide concentrate; Press the Fe in the mixture: SiO
2=1: 1.7 mass ratioes add quartz sand in mixture; Pressing 8% of mixture quality, is that 8% blowing slag (returning charge) joins in the compound with copper content; This mixture charge is put in the top blast stove by 40 tons/h, is that 23% oxygen-rich air is by 9800Nm with volumetric concentration
3The consumption of/h blasts the molten bath with spray gun, make melt keep the violent stirring state, and feed temperature to 1170～1210 ℃ of melt in the coal gas control stove, sulphur and ferro element and the oxygen generation intensive oxidizing reaction that blasts in the melt, the reaction heat that produces is the main source of smelting heat income, the insufficient part of heat energy is replenished by the coal gas that feeds, in the matte smelting process, copper matte regulus that produces in the molten bath and the blend melt of slag interruption are put into the sedimentation electric furnace from the top blast fire grate, promptly discharge and want just to enter in 40 minutes at interval discharging next time after 30 minutes, copper matte regulus and slag are divided into levels because of difference of specific gravity in electric furnace, lower floor's copper matte regulus grade of output is about 74%, send converter carry out routine blow the blister copper product, slag continue in electric furnace melting to copper content below 0.5%, carrying out Water Quenching after the discharge can fully utilize, and flue gas send smoke processing system to make sulfuric acid.
Claims (5)
1. be the method for raw material melting copper with useless composition brass and copper sulfide concentrate, it is characterized in that comprising:
Raw material is mixed:
Press useless composition brass copper content: the mass ratio of copper sulfide concentrate copper content=1: 1.3～10, the composition brass that will give up mixes with copper sulfide concentrate;
In mixture, add and contain SiO
2The Fe of raw material to the mixture: SiO
2=1: 1.1～1.7 mass ratioes;
Press 0～8% of mixture quality, returning charge is joined in the compound;
Melting:
The mixture for preparing is dropped in the molten bath, add fuel control melt temperature to 1100～1300 ℃ again, and to blast volumetric concentration in the molten bath be 23%～85% oxygen-rich air, make material stir-melting in the molten bath of oxidizing atmosphere, isolate slag, matte until melting, isolated matte gets the blister copper product after sending conventional blowing operation to blow; Slag send conventional electrosmelting further to reduce in the slag below the copper content to 0.5%, carries out Water Quenching afterwards; Flue gas send the relieving haperacidity operation to make sulfuric acid.
2. the method for claim 1 is characterized in that described useless composition brass is commercial product.
3. the method for claim 1 is characterized in that described returning charge is meant that the copper content that obtains is 2～15% flue dust or blowing slag from melting, converting process.
4. the method for claim 1 is characterized in that the described SiO of containing
2Raw material be in quartzite, the quartz sand one or more.
5. the method for claim 1, the fuel that it is characterized in that described adding is one or more in bituminous coal, hard coal or the coke in the solid fuel, perhaps being coal gas or in the natural gas one or more in the geseous fuel, perhaps is in the heavy oil, diesel oil, coal tar in the liquid fuel one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010199770A CN101845554A (en) | 2010-06-13 | 2010-06-13 | Method for melting copper by using waste copper and concentrate of copper sulfide as raw materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010199770A CN101845554A (en) | 2010-06-13 | 2010-06-13 | Method for melting copper by using waste copper and concentrate of copper sulfide as raw materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101845554A true CN101845554A (en) | 2010-09-29 |
Family
ID=42770372
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|---|---|---|---|
| CN201010199770A Pending CN101845554A (en) | 2010-06-13 | 2010-06-13 | Method for melting copper by using waste copper and concentrate of copper sulfide as raw materials |
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| CN114836630A (en) * | 2022-03-29 | 2022-08-02 | 中国恩菲工程技术有限公司 | Method and system for cooperatively treating hazardous waste containing copper by copper concentrate |
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| CN116024436A (en) * | 2022-12-14 | 2023-04-28 | 凉山矿业股份有限公司 | Smelting method for long-service-life operation of copper oxygen-enriched top-blown furnace and preparation method of copper matte |
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