CN101845555B - Method for producing white matte by mixed smelting of scrap copper and copper concentrate - Google Patents
Method for producing white matte by mixed smelting of scrap copper and copper concentrate Download PDFInfo
- Publication number
- CN101845555B CN101845555B CN201010199845XA CN201010199845A CN101845555B CN 101845555 B CN101845555 B CN 101845555B CN 201010199845X A CN201010199845X A CN 201010199845XA CN 201010199845 A CN201010199845 A CN 201010199845A CN 101845555 B CN101845555 B CN 101845555B
- Authority
- CN
- China
- Prior art keywords
- copper
- matte
- smelting
- composition brass
- white matte
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000010949 copper Substances 0.000 title claims abstract description 71
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 61
- 239000012141 concentrate Substances 0.000 title claims abstract description 28
- 238000003723 Smelting Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title description 3
- 238000000034 method Methods 0.000 claims abstract description 32
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 16
- 239000001301 oxygen Substances 0.000 claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 15
- 230000008018 melting Effects 0.000 claims abstract description 15
- 239000003245 coal Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 54
- 229910001369 Brass Inorganic materials 0.000 claims description 45
- 239000010951 brass Substances 0.000 claims description 45
- 239000002893 slag Substances 0.000 abstract description 25
- 239000000463 material Substances 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 8
- 239000000446 fuel Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 241001062472 Stokellia anisodon Species 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000007499 fusion processing Methods 0.000 description 3
- 239000011044 quartzite Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 2
- 241001124569 Lycaenidae Species 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
- 235000014987 copper Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010793 electronic waste Substances 0.000 description 1
- 229910052840 fayalite Inorganic materials 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002620 method output Methods 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002035 prolonged 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
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a process for producing white matte by mixed smelting of scrap copper and copper concentrate. Based on the traditional matte smelting process, the materials are mixed according to the mass ratio of the copper content of copper concentrate and scrap copper of 1:0.5-0.25, and the scrap copper is continuously added into a melting furnace; and coal the amount of which is 2% to 9% of the amount of the copper concentrate is added, and the white matte is produced by smelting in oxygen-enriched air with the volume concentration of 60% to 95%. The process of the invention has the advantages of low investment, low energy consumption, simple implementation, convenient operation, energy saving, environmental protection and the like, can effectively treat scrap copper, produces white matte, can reduce the copper content in slag, and overcomes the shortcomings that the copper content in the slag is high in the traditional high-grade matte smelting method.
Description
Technical field
The present invention relates to the heavy non-ferrous metallurgy technical field, the method for specifically a kind of useless composition brass and copper ore concentrates producing white matte by mixed smelting.
Background technology
Copper smelting enterprise supplies to bessemerize through various melting method output high-grade mattes in order to improve output with minimum investment to greatest extent, to reduce the unit cost of production on the one hand; On the other hand bessemerize with refining process in add cold burden, the refining slag cold burden is arranged usually, the useless composition brass of the cold blister copper of outsourcing, higher-grade, anode scrap, scrap anode plate etc.
Up to now, domestic and international many smelteries can obtain high-grade matte through various smelting techniques under excess oxygen.In the flash smelting process, it is 65% that the matte grade is produced in your smelting, and Finland Outukump further improves oxygen-rich concentration can reach 66%～70%.The matte grade of Noranda process can be up to 65%～73%, slag cupric 5.7%, and dust rate is 2.3%～4.8%.Ao Simaite and Ai Safa produce the matte grade between 56%～62%, slag cupric 0.6%～1.5%.Mountain, mouth of a river method matte grade is 67%～73.11%, slag cupric 1%～3.5%.It is 68.6% that Mitsubishi process produces the matte grade, slag cupric 0.7%.Above-mentioned matte grade is all of high grade than traditional technology gained matte, but the slag cupric is generally higher, higher, the complex equipments of the dust rate of part technology.It should be noted that especially the aforesaid method major part all is an ore deposit copper melting output high-grade matte.
Along with the social development progress, useless composition brass regenerated using is an important development direction of copper smelting industry.Therefore, find useless preferably composition brass reclaiming process, make useless composition brass substitute the part copper concentrate, can effectively alleviate the demand of copper smelting enterprise copper ore concentrates.The reclaiming process of domestic useless composition brass contains copper grade according to it and is divided into three kinds: the one, and adopt one-stage process that the useless composition brass of higher-grade (＞98%) directly is processed into copper material; The 2nd, adopt two-stage method to handle than higher-grade (92%～98%) useless composition brass, i.e. pyrorefining+electrorefining; The 3rd, adopt three-stage process to handle more low-grade (＜90%) useless composition brass, i.e. melting+pyrorefining+electrorefining.The technology of handling the useless composition brass of higher-grade except that one-stage process and equipment comparatively ripe perfect; Other more low-grade useless composition brass treatment process and equipment are all relatively backward; Particularly contain copper grade at the low-grade useless composition brass below 40%; Still adopt superseded backward processing unit such as blast furnace to handle mostly, have problems such as energy consumption is high, investment is big, seriously polluted.
The effectively useless composition brass of processing low-grade of several families smeltery is abroad only arranged, and like German Caesar smeltery, Sweden Long Sikaer smeltery etc., Italian Bo Temagehela smeltery, U.S. Ke Maike factory, American South line Garstang, John factory are raw material with useless composition brass all.Wherein, Long Sikaer smeltery year is handled 4.2 ten thousand tons of electronic wastes, produces about 5000 tons of copper.The many stoves of the Ka Er that state's inland river copper is introduced are handled useless composition brass processing parameter: go into the average cupric 70%-80% of stove material; Every stove produces about 40 tons of blister coppers, about 20 tons in slag, and the slag cupric is on average 3.5%; 4-6 hour every stove activity duration, the stove longevity is about 3 months.The remarkable advantage of the useless composition brass technology of many stoves of Ka Er processing low-grade is exactly that adaptability to raw material is strong, environment protecting good.However, the useless at home composition brass process field of these advanced smelting technologys and equipment does not still obtain excellent popularization and application.This mainly be because have that technology introduction is limited, investment is big, energy consumption is higher, batch operation, operation is frequent, the stove longevity is short, the more high weak point of slag cupric; Simultaneously in useless composition brass adition process; Oversize material can't directly add; Thereby reduced the input amount of useless composition brass, caused useless composition brass treatment capacity less.
Summary of the invention
The objective of the invention is to overcome the deficiency that useless composition brass exists in smelting in the prior art, provide a kind of reduced investment, energy consumption useless composition brass and copper ore concentrates low, that work continuously to mix product white matte melting method.
Technical scheme of the present invention is: in the copper ore concentrates smelting process; By the copper content of copper ore concentrates and the mass ratio of useless composition brass is 1: prepare burden (0.5～0.25); Allocate the low-grade useless composition brass of granularity 2～150mm into; Entering in the fusion process with copper ore concentrates, add and to account for the coal into stove copper ore concentrates amount 2%～9%, is that melting generates white matte under 60%～95% the oxygen-rich air in volumetric concentration.
Reaction below taking place in the stove:
2Cu+FeS＝Cu
2S+Fe
Fe+Fe
3O
4＝4FeO
2FeO+SiO
2＝2FeO·SiO
2
Total reaction is:
2Cu+FeS+Fe
3O
4+2SiO
2＝Cu
2S+2(2FeO·SiO
2)
Or 4Cu+2FeS+O
2+ 2SiO
2=2Cu
2S+2 (FeOSiO
2)
Can find out that from reaction formula (A) with (B) Cu can react with FeS in the time of 1200 ℃, and with Fe
3O
4Be reduced into sub-compound.This fully shows useless composition brass at melting temperature range, can reduce FeS in the matte, improves the matte grade, and can reduce magnetic oxygenated iron level in the molten bath, reduces the slag copper content.
Compare with known technology; The invention has the advantages that: in existing copper ore concentrates fusion process, add low-grade useless composition brass melting generation white matte together, can save the facility investment of the useless composition brass of individual curing; Can handle the useless composition brass material of bulk simultaneously, increase useless composition brass treatment capacity; Make full use of the reaction heat in the copper ore concentrates fusion process, reduce the required fuel quantity of cold copper material fusing; Fusing of cold copper material and FeS, Fe
3O
4Deng series reaction takes place, impel martial ethiops to destroy, the high problem of slag cupric is resolved in the tradition refining white matte method; Cu after the cold burden fusing combines to generate matte with the S among the FeS, and S unnecessary in the melting is with Cu
2The S form gets into the blowing operation, has improved the utilization ratio of sulphur to a great extent, makes technology energy-conserving and environment-protective more.
Traditional converting process is step periodic job, and whole process is divided into two cycles, and first cycle is also referred to as slag forming period, at this stage F eS and the oxygen generation vigorous reaction that is blasted, generates FeO and SO
2Gas, the quartzy flux slag making of FeO and adding raises the copper content in the sulfonium, because sulfonium is very little with the slag mutual solubility and density is different, so be divided into two-layerly, the upper strata slag is by eliminating regularly.Therefore in actual production process, need constantly swing converter topple over slag, cause operation frequent and the gap reinforced, prolonged the work period, increased labour intensity.Use method of the present invention, in useless composition brass and the copper ore concentrates mixed smelting process,, reducing Fe because the adding of useless composition brass (Cu) is decomposed FeS
3O
4The time generate FeO and and SiO
2Therefore slag making has just accomplished deferrization slag making, output white matte in smelt stage, can eliminate based on the present invention and bessemerize slag forming period period 1 that is provided with traditionally, helps improving the converter processing power and handles the cold burden number.
Embodiment
On traditional matte smelting technology basis, will give up composition brass and copper ore concentrates mix in the cupric ratio, join in the smelting furnace continuously, and mend an amount of coal and act as a fuel, and melting generates white matte under excess oxygen.
Embodiment 1:
Used copper ore concentrates composition is:
| Element | Cu(％) | Fe(％) | S(％) | SiO 2(％) | As(％) | ?MgO+Al 2O 3(％) |
| Content | 26 | 28 | 28 | 14 | 0.4 | 2.5 |
The hard coal composition that fuel adopts is:
| Composition | Fixed carbon | Volatile matter | Ash content | Add up to |
| ％ | 70.00 | 10.00 | 20.00 | 100.00 |
In the copper content of copper ore concentrates and the contained copper mass ratio of useless composition brass=prepare burden at 1: 0.5.In the melting operation operation of top blast stove (4 meters of internal diameters, burner hearth high 17.6 meters), (per hour add-on) adds 30 tons of copper ore concentratess and cupric is that (granularity is 2～150mm) 10.55 tons, adds 1.5 tons hard coal, 10588N m simultaneously for 37% useless composition brass particle
3Oxygen concn is that 68% oxygen-rich air and 0.51 ton quartzite (contain SiO
280%, confirm the quartzite add-on according to the iron level in the ore by existing fayalite slag type).Oxygen-rich air sprays into the molten bath with the oxygen rifle from furnace roof, and the temperature of melt is at 1150 ℃～1220 ℃ in the control stove.Employing is interrupted the system (the discharging matte wants just to get in 40 minutes at interval discharging next time after 20 minutes) of emitting matte from the slag notch continuous discharging slag with from the escape orifice of matte, and the white matte composition of melting generation is: Cu 74%, Fe 4.5%, S 21.2%).
Promptly year 70000 tons of smelting furnaces that contain copper ore concentrates of processing can attach the useless composition brass of 28000 tons of Treatment of Copper in smelt stage, and the matte grade brings up to 74% from 55%.
Embodiment 2:
Used copper ore concentrates composition is:
| Element | Cu(％) | Fe(％) | S(％) | SiO 2(％) | As(％) | MgO+Al 2O 3(％) |
| Content | 24 | 19.8 | 23 | 11 | 0.3 | 2.7 |
The mark coal composition that fuel adopts is:
| Composition | Fixed carbon | Volatile matter | Ash content | Add up to |
| ％ | 70.00 | 12.00 | 18.00 | 100.00 |
In the copper content of copper ore concentrates and the contained copper mass ratio of useless composition brass=prepare burden at 1: 0.4.In the melting operation operation of horizontal oxygen bottom blowing stove (3.1 * 11 meters of stove specification Φ), per hour add 8 tons of copper ore concentratess and cupric and be 3 tons of 26% useless composition brass particles, per hour add 0.2 ton hard coal, 2000N m simultaneously
3Oxygen concn is that 90% oxygen-rich air and 0.1 ton quartzite (contain SiO
280%).Oxygen-rich air sprays into the molten bath with the oxygen rifle from furnace bottom, and the temperature of melt adopts the system of emitting matte from slag notch continuous overflow deslagging with from matte escape orifice serial siphon at 1170 ℃～1200 ℃ in the control stove.The white matte composition that melting generates is: Cu 76%, Fe 2.9%, S 21%).
Promptly year 1.5 ten thousand tons of smelting furnaces that contain copper ore concentrates of processing can attach the useless composition brass of 5600 tons of Treatment of Copper in smelt stage, and the matte grade brings up to 76% from 55%.
Claims (3)
1. the method for useless composition brass and copper ore concentrates producing white matte by mixed smelting; It is characterized in that mass ratio by the copper content of the copper content of copper ore concentrates and useless composition brass is 1: 0.5～0.25 to prepare burden; The composition brass that will give up joins in the smelting furnace continuously; Add and to account for coal into stove copper ore concentrates amount 2%～9%, in volumetric concentration be under 60%～95% the oxygen-rich air melting to generate cupric be 70%～78% white matte.
2. the method for useless composition brass according to claim 1 and copper ore concentrates producing white matte by mixed smelting, the temperature that it is characterized in that melt in the smelting furnace is at 1100 ℃～1280 ℃.
3. the method for useless composition brass according to claim 1 and copper ore concentrates producing white matte by mixed smelting is characterized in that the copper content of useless composition brass is 10%～50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010199845XA CN101845555B (en) | 2010-06-13 | 2010-06-13 | Method for producing white matte by mixed smelting of scrap copper and copper concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010199845XA CN101845555B (en) | 2010-06-13 | 2010-06-13 | Method for producing white matte by mixed smelting of scrap copper and copper concentrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101845555A CN101845555A (en) | 2010-09-29 |
| CN101845555B true CN101845555B (en) | 2012-06-27 |
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| CN201010199845XA Expired - Fee Related CN101845555B (en) | 2010-06-13 | 2010-06-13 | Method for producing white matte by mixed smelting of scrap copper and copper concentrate |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725896A (en) * | 2013-12-13 | 2014-04-16 | 金川集团股份有限公司 | Copper-nickel sulfide ore concentrate smelting method through pyrometallurgy |
| CN103924093A (en) * | 2014-05-07 | 2014-07-16 | 福建三美金属有限公司 | Production process of copper rods and copper wires |
| CN104232925B (en) * | 2014-09-30 | 2016-03-09 | 济源市欣欣实业有限公司 | The method of the complicated Treating Low-grade Copper Ores producing white matte by mixed smelting of multi-source |
| CN104232911B (en) * | 2014-09-30 | 2016-08-17 | 济源市欣欣实业有限公司 | The method utilizing copper refining slag-pyrite-bornite mine tailing producing white matte by mixed smelting |
| CN104694767B (en) * | 2015-03-19 | 2017-02-01 | 谢彩红 | Low-grade scrap copper smelting method |
| CN110735047B (en) * | 2019-09-30 | 2022-03-22 | 赤峰金通铜业有限公司 | Method for reducing copper content of copper concentrate top-blown vertical furnace slag |
| CN111041225B (en) * | 2019-12-12 | 2022-05-17 | 吉林紫金铜业有限公司 | Oxygen-enriched side-blown smelting method for lean high-silicon copper concentrate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259484A (en) * | 2007-03-05 | 2008-09-10 | 浙江宏天铜业有限公司 | Scrap copper continuous casting and rolling low oxygen glitter copper lever production technology |
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2010
- 2010-06-13 CN CN201010199845XA patent/CN101845555B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259484A (en) * | 2007-03-05 | 2008-09-10 | 浙江宏天铜业有限公司 | Scrap copper continuous casting and rolling low oxygen glitter copper lever production technology |
Non-Patent Citations (1)
| Title |
|---|
| D.A.Rawnsley等.霍恩熔炼厂废杂铜的处理.《中国有色冶金》.1986,(第5期),第31-34页. * |
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|---|---|
| CN101845555A (en) | 2010-09-29 |
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