CN102703728A - Recovery treatment process of brass slag - Google Patents
Recovery treatment process of brass slag Download PDFInfo
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- CN102703728A CN102703728A CN2012101045443A CN201210104544A CN102703728A CN 102703728 A CN102703728 A CN 102703728A CN 2012101045443 A CN2012101045443 A CN 2012101045443A CN 201210104544 A CN201210104544 A CN 201210104544A CN 102703728 A CN102703728 A CN 102703728A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P10/00—Technologies related to metal processing
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Abstract
The invention provides a recovery treatment process of brass slag, which comprises the steps of: pretreatment, smelting treatment and refining treatment, and specifically comprises the steps of: firstly carrying out crushing, magnetic separation, water washing and baking pretreatment on the brass slag; then smelting in a channel-type induction furnace, slagging and de-ironing; and finally carrying out deoxidation, high temperature and refinement refining treatment on the molten brass. According to the recovery treatment process of brass slag provided by the invention, the quality of recovered brass ingot is improved, the production cost is lowered, metal burning loss and fume emission in the treatment process are reduced, and energy saving and emission reducing effects are achieved.
Description
[technical field]
The present invention relates to a kind of recovery processing technique of brass slag.
[background technology]
Chinese national economy keeps the impetus that grows at top speed always in recent years, and wherein to increase be the twice of national GDP value growth in the consumption of non-ferrous metal, and China has become the big copper of the first in the world country of consumption.Because the copper resource of China is relatively deficienter, long-term dependence on import, the wretched insufficiency of copper raw material has become the bottleneck that China's coppersmith already develops, and the development and use of secondary copper resource have become the problem that presses for solution.
The regenerated using of brass slag meets China's " recycling economy development " strategy, and continuous development of society economy is had great economic benefit and social benefit.The general cupric 35-45% of brass slag, zinc 10-20% wherein also contains a large amount of zinc oxide.Owing to contain a large amount of oxide inclusions in the brass slag, in actual production, often sold cheap processing as waste material, cause great waste.
Existing brass slag recovery and treatment method has two kinds: a kind of is to adopt sulfuric acid to leach, and adds zinc dust precipitation deposited copper and iron, and the sediment electrodeposition reclaims copper, and solution obtains zinc sulfate through condensing crystal.Since be acid process, big to equipment corrosion, and add zinc dust precipitation copper, iron cost height, environmental pollution is serious.Another kind is to adopt the flame reverberatory smelting, and the flame reverberatory furnace is to lean on thermal-flame that gas-firing, coal gas, diesel oil or heavy oil produces through the furnace roof radiation and the flame direct heat transfer heats and melting batch, and not only furnace thermal efficiency is low; Energy consumption is high; And the molten bath heating surface area is big, and furnace gas directly contacts with melt, and oxidization burning loss is very serious; The copper ingot of being produced can only use as composition brass, causes very big waste.In addition, when adopting reverberatory smelting, workman's productive labor intensity is big, and the flue dust that is produced is contaminate environment very easily.
Because impurity iron is very big to the performance impact of brass, can make brass ware have magnetic on the one hand, in the course of processing, produce magnetization phenomenon.If the making electric parts can generate heat, cause equipment breakdown in exchange current magnetic field.If manufacture conducting rod, it is big that the resistance ratio simple brass is wanted, and influence is used.When polishing, be prone to the hard point, influence follow-up electroplating quality.Traditional treatment method can't deironing, and the BRASS FORGE grade that therefore reclaims gained is low, can only use as composition brass.
[summary of the invention]
The technical problem that the present invention will solve; Be to provide a kind of recovery processing technique of brass slag, can improve the quality that reclaims BRASS FORGE, reach the purpose that reduces production costs simultaneously; And can reduce treating processes metal loss and fume emission, reach the effect of energy-saving and emission-reduction.
The present invention is achieved in that
A kind of recovery processing technique of brass slag, said treatment process comprises pre-treatment, melting processing and refining treatment; At first the brass slag is carried out fragmentation, magnetic separation, washing and oven dry pre-treatment; Melting and slag making deironing in the core line frequency induction furnace is arranged then; The last refining treatment that again brass liquid is comprised deoxidation, high temperature and thinning processing; The concrete steps of said treatment process are following:
(1) pre-treatment: the brass slag is carried out fragmentation, sieves, after the magnetic separation, through washing, filters at last the brass sediment is separated with tail mud again;
(2) melting: sent into melting in the core line frequency induction furnace after the brass sediment drying after will filtering, formed brass liquid;
(3) slag making deironing: the brass liquid after will changing clearly is warming up to boiling, at high temperature is transformed into iron protoxide to impurity iron, adds iron removing reagent and slag former, the removal iron contamination of skimming;
(4) deoxidation: 0.03% the phosphorus that adds brass liquid quality in the brass liquid after the slag making deironing carries out deoxidation, and said phosphorus adds with the form of phosphor bronze alloy;
(5) pyroprocessing: the brass liquid after the deoxidation is warming up to flame, and 5min is left standstill in outage;
(6) thinning processing: the rare earth fining agent with containing cerium carries out thinning processing to brass liquid, and the add-on of said fining agent is 0.05% of a brass liquid weight;
(7) stokehold check: the composition and the refining effect of check brass liquid, if the spectral test result finds that composition is undesirable, then add corresponding alloying element and stir; If refining is undesirable, then carry out deoxidation, high temperature and the refinement refining treatment of secondary;
(8) cast: the teeming temperature of brass liquid is controlled at 1000～1050 ℃, pours into the copper ingot naturally cooling, to the direct pouring cast part product of sand mold casting;
(9) copper ingot check warehouse-in: copper ingot is cut along the transverse section and polishing, according to grain fineness number size and quality of finish copper ingot is carried out classification, warehouse-in is preserved.
The present invention has following advantage:
The present invention adopts has the core line frequency induction furnace to carry out melting, and said have the core line frequency induction furnace to adopt the power frequency heating, and the current density that metal produces in the channel is big, has added that the channel metal is as playing melt; Heat is created in by in the metal of melting itself, and thermo-efficiency is high, and burn-off rate is fast; Oxidization burning loss is few, is generally 1-3%, and productivity is high; Work situation is good, can reduce treating processes metal loss and fume emission, reaches the effect of energy-saving and emission-reduction;
In addition, adopt under the high temperature to be transformed into iron protoxide to impurity iron, add iron removing reagent and slag former; Skim and remove the slag making deironing treatment process of iron contamination, the long service life of equipment, the BRASS FORGE quality that reclaims gained simultaneously is higher; Can directly be used for the production of brass ware; The fining agent of thinning processing operation iron content has not effectively solved a difficult problem that occurs hard point when BRASS FORGE causes the product polishing because of iron-holder exceeds standard in addition, has improved the recovery value of BRASS FORGE greatly.
[embodiment]
A kind of recovery processing technique of brass slag, said treatment process comprises pre-treatment, melting processing and refining treatment; At first the brass slag is carried out fragmentation, magnetic separation, washing and oven dry pre-treatment; Melting and slag making deironing in the core line frequency induction furnace is arranged then; The last refining treatment that again brass liquid is comprised deoxidation, high temperature and thinning processing; The concrete steps of said treatment process are following:
(1) pre-treatment: the brass slag is carried out fragmentation, sieves, after the magnetic separation, through washing, filters at last the brass sediment is separated with tail mud again;
(2) melting: sent into melting in the core line frequency induction furnace after the brass sediment drying after will filtering, formed brass liquid;
(3) slag making deironing: the brass liquid after will changing clearly is warming up to boiling, at high temperature is transformed into iron protoxide to impurity iron, adds iron removing reagent and slag former, the removal iron contamination of skimming;
(4) deoxidation: 0.03% the phosphorus that adds brass liquid quality in the brass liquid after the slag making deironing carries out deoxidation, and said phosphorus adds with the form of phosphor bronze alloy;
(5) pyroprocessing: the brass liquid after the deoxidation is warming up to flame, and 5min is left standstill in outage;
(6) thinning processing: the rare earth fining agent with containing cerium carries out thinning processing to brass liquid, and the add-on of said fining agent is 0.05% of a brass liquid weight;
(7) stokehold check: the composition and the refining effect of check brass liquid, if the spectral test result finds that composition is undesirable, then add corresponding alloying element and stir; If refining is undesirable, then carry out deoxidation, high temperature and the refinement refining treatment of secondary;
(8) cast: the teeming temperature of brass liquid is controlled at 1000～1050 ℃, pours into the copper ingot naturally cooling, to the direct pouring cast part product of sand mold casting;
(9) copper ingot check warehouse-in: copper ingot is cut along the transverse section and polishing, according to grain fineness number size and quality of finish copper ingot is carried out classification, warehouse-in is preserved.
Below be embodiments of the invention:
Embodiment one:
Casting sand mould cast product after leaded brass (ZHPb59-1) the slag manipulation of regeneration is arranged
Will through broken, sieve, magnetic separation, washing and dried to have the leaded brass slag to drop into melting rate be that having of 300kg/h is smelted into brass liquid fast in the core line frequency induction furnace.
Be warming up to boiling earlier after brass liquefaction is clear, add iron removing reagent and slag former, skim, remove twice of iron contamination after, add 0.03% phosphorus (with phosphorous be that 14% copper phosphorus master alloy form adds) brass liquid is carried out deoxidation.Skim once more after fully stirring, and cover with insulating covering agent, be warming up to brass liquid once more and produce boiling, 5min is left standstill in outage.
Add 0.05% the Ce refiner that contains account for brass liquid weight then brass liquid is carried out thinning processing.
The stokehold sampling detects brass liquid composition through spectroscopic analysis, adds an amount of zinc and aluminium, fully stirs the mobile sample of the back concentric triple helical of cast, sand mold tension specimen and copper ingot.With copper ingot section, polishing and with 10% ammonium persulfate aqueous solution corrosion, check thinning effect.With the direct casting sand mould hot-water heating of the brass liquid foundry goods that is up to the standards, teeming temperature is controlled at 1000～1050 ℃, and the foundry goods naturally cooling is after after cleaning, polishing and the machining, carry out pneumatic testing.Detected result shows that the brass slag is through manipulation of regeneration, and castability is good, and the mobile sample mean length of triple helical reaches 82cm with one heart; Stretch test result tensile strength is 230MPa, and unit elongation is 10.5%; Bright and clean and the dense structure of cast(ing) surface through the pneumatic testing of 0.7MPa, does not find to leak, and meets the quality product requirement.
Embodiment two:
Gravitational casting hot-water heating polished part after little leaded brass slag (containing Cu 58-60%, Pb≤0.1%) manipulation of regeneration
Will through broken, sieve, magnetic separation, washing and dried little leaded brass slag drop into the melting brass liquid fast that has in the core line frequency induction furnace that melting rate is 300kg/h.
Be warming up to boiling earlier after brass liquefaction is clear, add iron removing reagent and slag former, skim, remove twice of iron contamination after, add 0.03% phosphorus (with phosphorous be that 14% copper phosphorus master alloy form adds) brass liquid is carried out deoxidation.Skim once more after fully stirring, and cover with insulating covering agent, be warming up to brass liquid once more and produce boiling, 5min is left standstill in outage.
Add 0.05% the Ce refiner that contains account for brass liquid weight then brass liquid is carried out thinning processing.
Get the spectrum sample and detect brass liquid composition, add an amount of zinc and aluminium, fully stir back casting metal type tension specimen and copper ingot.With copper ingot section, polishing and with 10% ammonium persulfate aqueous solution corrosion, check quality of finish (whether having the hard point) and thinning effect.With Gravity casting machines cast polishing hot-water heating spare, teeming temperature is controlled at 1000-1050 ℃ with the brass liquid that is up to the standards, and the foundry goods naturally cooling is after after cleaning, polishing, machining and the polishing, carry out ammonia and smoke test.Detected result shows that little leaded brass slag is through manipulation of regeneration, and castability is good, and the bright and clean and dense structure of cast(ing) surface does not find defectives such as pore, shrinkage porosite, through the pneumatic testing of 0.7MPa, does not all find to leak; Stretch test result tensile strength is 381MPa, and unit elongation is 8.4%; Ammonia is smoked product foundry goods after the test strike flatly, the result does not all find stress corrosion cracking.
Though more than described embodiment of the present invention; But the technician who is familiar with the present technique field is to be understood that; We described concrete embodiment is illustrative; Rather than being used for qualification to scope of the present invention, those of ordinary skill in the art are in the modification and the variation of the equivalence of doing according to spirit of the present invention, all should be encompassed in the scope that claim of the present invention protects.
Claims (1)
1. the recovery processing technique of a brass slag, it is characterized in that: said treatment process comprises pre-treatment, melting processing and refining treatment; At first the brass slag is carried out fragmentation, magnetic separation, washing and oven dry pre-treatment; Melting and slag making deironing in the core line frequency induction furnace is arranged then; The last refining treatment that again brass liquid is comprised deoxidation, high temperature and thinning processing; The concrete steps of said treatment process are following:
(1) pre-treatment: the brass slag is carried out fragmentation, sieves, after the magnetic separation, through washing, filters at last the brass sediment is separated with tail mud again;
(2) melting: sent into melting in the core line frequency induction furnace after the brass sediment drying after will filtering, formed brass liquid;
(3) slag making deironing: the brass liquid after will changing clearly is warming up to boiling, at high temperature is transformed into iron protoxide to impurity iron, adds iron removing reagent and slag former, the removal iron contamination of skimming;
(4) deoxidation: 0.03% the phosphorus that adds brass liquid quality in the brass liquid after the slag making deironing carries out deoxidation, and said phosphorus adds with the form of phosphor bronze alloy;
(5) pyroprocessing: the brass liquid after the deoxidation is warming up to flame, and 5min is left standstill in outage;
(6) thinning processing: the rare earth fining agent with containing cerium carries out thinning processing to brass liquid, and the add-on of said fining agent is 0.05% of a brass liquid weight;
(7) stokehold check: the composition and the refining effect of check brass liquid, if the spectral test result finds that composition is undesirable, then add corresponding alloying element and stir; If refining is undesirable, then carry out deoxidation, high temperature and the refinement refining treatment of secondary;
(8) cast: the teeming temperature of brass liquid is controlled at 1000～1050 ℃, pours into the copper ingot naturally cooling, to the direct pouring cast part product of sand mold casting;
(9) copper ingot check warehouse-in: copper ingot is cut along the transverse section and polishing, according to grain fineness number size and quality of finish copper ingot is carried out classification, warehouse-in is preserved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101045443A CN102703728A (en) | 2012-04-11 | 2012-04-11 | Recovery treatment process of brass slag |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101045443A CN102703728A (en) | 2012-04-11 | 2012-04-11 | Recovery treatment process of brass slag |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104651614A (en) * | 2015-01-23 | 2015-05-27 | 安徽蛟龙科技有限公司 | Application of rare earth material in copper melting |
| CN106350689A (en) * | 2016-08-31 | 2017-01-25 | 宁波长振铜业有限公司 | Method for directly producing copper alloy from scrap copper |
| CN107955883A (en) * | 2017-10-24 | 2018-04-24 | 镇江市丹徒区华发五金有限公司 | A kind of waste cupron regenerates recovery method |
| CN112646982A (en) * | 2020-09-13 | 2021-04-13 | 湖北大江环保科技股份有限公司 | Non-ferrous smelting waste short-process treatment system and application |
| CN113967518A (en) * | 2021-09-18 | 2022-01-25 | 天津开发区精诺瀚海数据科技有限公司 | Iron and steel smelting slag processing apparatus |
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| CN1434140A (en) * | 2002-01-21 | 2003-08-06 | 昆明理工精诚科技有限责任公司 | Method for preparing coal base reductant for pyrometallurgical refining copper |
| CN101100708A (en) * | 2006-07-07 | 2008-01-09 | 隋智通 | Method for separating iron and copper from copper smelt slag |
| CN101624655A (en) * | 2009-08-07 | 2010-01-13 | 浙江万金实业有限公司 | Method for removing impurities in waste copper |
| CN101956076A (en) * | 2009-08-30 | 2011-01-26 | 福建省长乐市华拓五金有限公司 | Brass scrap regeneration technology |
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2012
- 2012-04-11 CN CN2012101045443A patent/CN102703728A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1434140A (en) * | 2002-01-21 | 2003-08-06 | 昆明理工精诚科技有限责任公司 | Method for preparing coal base reductant for pyrometallurgical refining copper |
| CN101100708A (en) * | 2006-07-07 | 2008-01-09 | 隋智通 | Method for separating iron and copper from copper smelt slag |
| CN101624655A (en) * | 2009-08-07 | 2010-01-13 | 浙江万金实业有限公司 | Method for removing impurities in waste copper |
| CN101956076A (en) * | 2009-08-30 | 2011-01-26 | 福建省长乐市华拓五金有限公司 | Brass scrap regeneration technology |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104651614A (en) * | 2015-01-23 | 2015-05-27 | 安徽蛟龙科技有限公司 | Application of rare earth material in copper melting |
| CN106350689A (en) * | 2016-08-31 | 2017-01-25 | 宁波长振铜业有限公司 | Method for directly producing copper alloy from scrap copper |
| CN106350689B (en) * | 2016-08-31 | 2017-12-08 | 宁波长振铜业有限公司 | The method that copper scap directly produces copper alloy |
| CN107955883A (en) * | 2017-10-24 | 2018-04-24 | 镇江市丹徒区华发五金有限公司 | A kind of waste cupron regenerates recovery method |
| CN112646982A (en) * | 2020-09-13 | 2021-04-13 | 湖北大江环保科技股份有限公司 | Non-ferrous smelting waste short-process treatment system and application |
| CN113967518A (en) * | 2021-09-18 | 2022-01-25 | 天津开发区精诺瀚海数据科技有限公司 | Iron and steel smelting slag processing apparatus |
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Application publication date: 20121003 |