CN103909242A - Method for producing high-quality copper bar through waste copper cuttings - Google Patents
Method for producing high-quality copper bar through waste copper cuttings Download PDFInfo
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- CN103909242A CN103909242A CN201310005571.XA CN201310005571A CN103909242A CN 103909242 A CN103909242 A CN 103909242A CN 201310005571 A CN201310005571 A CN 201310005571A CN 103909242 A CN103909242 A CN 103909242A
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Abstract
The invention relates to a method for producing a high-quality copper bar through waste copper cuttings. The method for producing the high-quality copper bar through waste copper cuttings includes that removing impurities from waste copper cuttings generated in processing a copper casting, drying, smelting, removing scums, testing, preserving the heat of copper liquor, forming a bar, drawing and continuously casting, cutting, roughly scrapping, straightening, polishing, varnishing, tempering, and inspecting and so on. By means of the method for producing the high-quality copper bar through waste copper cuttings, the water, air and soil pollution caused by the waste copper cuttings is eliminated, the utility value of the waste copper cuttings is improved, the environment pollution is reduced, the application field of the waste copper cuttings is broadened, the requirement of the production of the high-quality copper bar is satisfied, the added value of the product is improved, and the comprehensive resource utilization is realized.
Description
Technical field
The invention belongs to metals resources comprehensive utilization technique field, relate to a kind of method with copper scrap bits production high-quality copper rods (copper material in special shape, hollow copper material).
Background technology
Copper scrap bits are discarded objects that copper casting produces in process of manufacture, and its composition is comparatively complicated, except containing a large amount of metallic coppers, also contains the impurity such as a certain amount of iron, sand, greasy dirt.Because this offal treatment is got up more difficult, current most of copper scale manufacturer carries out this type of discarded object after plain mode is processed to take out, so both can cause certain pollution to environment, the comprehensive utilization ratio that makes again to consider to be worth doing interior resource is not high, causes metallic copper etc. to have valence component to lose in vain.For reclaiming the valuable metal of copper scrap bits, Zeng You producer sold outward as raw material after taking the technical matters such as deironing, calcining to process copper scrap bits in the past, although technique is simple, seriously polluted, can not reach the object that resource comprehensive is recycled.In recent years; along with the pay attention to day by day of country to environmental protection work; also there is clear and definite requirement in government department to the efforts at environmental protection of enterprise; under this background; adopt advanced technical matters to recycle, produce high-quality copper casting to copper scrap bits; reduce environmental pollution, and then reach and improve Business Economic Benefit and the object of developing a circular economy, become numerous Tong Ye manufacturer so far and endeavoured the major technique problem of research.
Summary of the invention
The problem that the object of the invention is to prior art to exist is solved; and then provide that a kind of technological process is reasonable, equipment investment is few, comprehensive reutilization rate is high, energy consumption is low, production cost is low, easy operating, economic benefit and the good method of utilizing copper scrap bits production high-quality copper rod of environmental protection effect, the copper rod of producing comprises copper material in special shape rod, hollow copper material rod etc.
The processing steps such as the method for utilizing copper scrap bits to produce copper rod providing for achieving the above object comprises removal of impurities, oven dry, fusing, skim scum silica frost, chemical examination, the insulation of copper liquid, shaping, traction continuous casting, cutting, slightly scrapes, alignment, shuttle light, excessively oily, tempering, inspection, its step process is as described below:
1, removal of impurities---get the discarded object copper scale that copper casting process of manufacture produces, repeatedly adsorb twice with electromagnet or alnico magnets, the iron filings and the steel nail that are mingled in copper scale are adsorbed clean, use afterwards 4%～5% liquid detergent water (or washing powder water) cleaning copper scrap bits, remove with copper scrap and consider the silt and the greasy dirt that mix to be worth doing;
2, dry---the copper scrap bits after cleaning are spread on iron plate and toasted, and baking temperature is controlled at 200～250 DEG C, and baking time is 1.5～2 hours (bake do not smolder till);
3, fusing---the copper scrap bits (foundry returns) of drying are joined to (in preheating furnace, temperature is controlled between 850～900 DEG C) in preheated induction furnace and carry out melting, when melting, copper liquid temperature is controlled at 1165～1175 DEG C, fusing time was controlled in 6 hours, reduce fusing time as far as possible, reduce oxygen and suck;
4, skim scum silica frost---waterbornely skim dun scum silica frost from the copper of fusing with steel spoon, until scum silica frost area is less than 20% of burner hearth area;
5, chemical examination---from skim the copper water scum silica frost, get after the copper water cooling of 50 grams～100 grams, carry out the chemical examination of copper content, if copper content control is between 58%～59%, directly whole copper water is poured in holding furnace; If copper content, not in 58%～59% scope, is greater than 93% useless red copper core by No. 0 pure zinc and copper content copper water is adjusted to composition, zincification when copper content is high, copper content is low adds useless red copper core.Operation repeatedly, until copper content control after between 58%～59%, is poured whole copper water in holding furnace into;
6, copper liquid insulation---the copper liquid having melted is incubated, copper coolant-temperature gage is controlled in 850 DEG C～875 DEG C, be beneficial to the moulding of copper water shaping;
7, shaping---select graphite to make corresponding mould, copper water is derived from mould;
8, traction continuous casting---the poker of deriving from last process is introduced to traction conticaster, and for the copper water of 850 DEG C～875 DEG C, the traction speed of adjusting traction machine is 0.7 m/min～0.9 m/min, make poker after the pinch roller of traction machine by the uniform velocity stretching;
9, cutting---require continuous casting copper bar to carry out the cutting of fixed quantity of different length according to user's instructions for use and storage, make copper rod;
10, slightly scrape---with alloy mold, copper rod profile is slightly scraped and repaired 3 times, each repairing all makes copper rod outdoor scene than last time little 0.2mm;
11, alignment---carry out alignment to slightly scraping rear copper rod with straightener;
12, shuttle light---to slightly scraping and the copper bar appearance of alignment is pushed shuttle light, improve surface smoothness with equidimension Alloy Model;
13, excessively oily---evenly spread upon the poker surface through shuttle light with edible vegetable oil, prevent copper material oxidation, variable color;
14, tempering---the copper rod after above-mentioned processing step is tied up and is neatly placed on tempering car, place 3 hours with 80 DEG C of temperature, then place 3.5 hours with 60 DEG C of temperature.
15, inspection---appearance, straight degree to copper rod are tested, and certified products warehouse-in is for sale, and defective work melts down refuse.
In aforementioned production method, the mould that described shaping processing step adopts has its corresponding empirical data convergent-divergent, such as: the hollow finished product of S=16 endoporus ∮ 11 6 side, its mould is accomplished S=17.4 hexagon, and inlays therein the flow-like inner core of ∮ 13.22.
Compared with prior art, innovative point of the present invention is:
(1), the present invention utilizes copper scrap bits production high-quality cast brass bar, eliminated copper scrap and consider the pollution to water, air, soil, improved the value that copper scrap is considered to be worth doing, improved productive life environment, reduced environmental pollution;
(2), the present invention expanded the application of copper scrap bits, especially met the requirement of production high-quality copper casting, improved value-added content of product, realized comprehensive utilization of resources;
(3), the process innovation of project of the present invention has been broken through traditional technical matters with cathode copper extruding copper rod, cost and the price of copper rod are reduced, provide one not only to reduce manpower, but also the production method of enhancing productivity, and in production practices, effectively applied.
After the technology of the present invention practices, produce abnormity, hollow copper bar calculating by processing at present 3000 tons of copper scraps bits year for one, year can be taken in 12,500 ten thousand yuan by enforcement sale, 1,000 ten thousand yuan of taxs revenue turned over to the state, drive employment 80 people, opened up new thinking for the comprehensive utilization of copper scrap bits, economic benefit and social benefit are remarkable, have fabulous application value.
Detailed description of the invention
Below with reference to embodiment, content of the present invention is described further.
Embodiment
1, by the 5 tons of copper scraps bits that produce after copper part process of manufacture, repeatedly adsorb twice with electromagnet or alnico magnets, by consider the iron adsorption mixing clean with copper scrap, clean greasy dirt and the silt of copper scrap in considering to be worth doing with the liquid detergent water that contains 5% afterwards,
2, will be after cleaning copper scrap bits are spread on iron plate and toasted, baking temperature be controlled at 200～250 DEG C, and baking time is 2 hours (bake do not smolder till).
3, the copper scrap bits (foundry returns) of drying are added (in preheating furnace, temperature is controlled between 850 DEG C) in preheated induction furnace carry out melting, when melting, copper liquid temperature is controlled at 1170 DEG C, and fusing time is 6 hours.
4, skim dun scum silica frost with steel spoon from the copper of fusing is waterborne, scum silica frost area is 18% of burner hearth area.
5, from skim the copper water scum silica frost, get after the copper water cooling of 50 grams, carry out the chemical examination of copper content, if copper content control is 59%, directly whole copper water is poured in holding furnace; If copper content is not equal to 59%, be greater than 93% useless red copper core by No. 0 pure zinc and copper content copper water is adjusted to composition, zincification when copper content is high, copper content is low adds useless red copper core.Operation repeatedly, until copper content control, after 59%, is poured whole copper water in holding furnace into.
6, the copper liquid having melted is incubated, makes copper coolant-temperature gage be controlled at 860 DEG C.
7, select graphite to make corresponding mould, copper water is derived from mould.
8, the poker of deriving from last process is introduced to traction conticaster, for the copper water of 860 DEG C, the traction speed of adjusting traction machine is 0.8 m/min, make poker after the pinch roller of traction machine by the uniform velocity stretching.
9, require copper bar to carry out the cutting of fixed quantity of different length according to user's instructions for use and storage, make copper rod.
10, with alloy mold, copper rod profile is slightly scraped and repaired 3 times, each repairing all makes copper rod outdoor scene than last time little 0.2mm.
11, carry out alignment with straightener to slightly scraping rear copper rod.
12, with equidimension Alloy Model, the copper bar appearance of slightly scraping also alignment is pushed to shuttle light, improve surface smoothness.
13, evenly spread upon the poker surface through shuttle light with edible vegetable oil, prevent copper material oxidation, variable color.
14, the copper rod after above-mentioned processing step is tied up and is neatly placed on tempering car, place 3 hours with 80 DEG C of temperature, then place 3.5 hours with 60 DEG C of temperature.
15, the appearance to copper rod, straight degree are tested, and certified products warehouse-in is for sale, and general certified products are 4.3 tons of left and right, and defective work melts down refuse.
Claims (1)
1. a method of utilizing copper scrap bits production high-quality copper rod, is characterized in that comprising following processing step:
1.1, removal of impurities---get the discarded object copper scale that copper casting process of manufacture produces, repeatedly adsorb twice with electromagnet or alnico magnets, the iron filings and the steel nail that are mingled in copper scale are adsorbed clean, clean copper scrap bits with 4%～5% liquid detergent water afterwards, remove with copper scrap and consider the silt and the greasy dirt that mix to be worth doing;
1.2, dry---the copper scrap bits after cleaning are spread on iron plate and toasted, and baking temperature is controlled at 200～250 DEG C, and baking time is 1.5～2 hours;
1.3, fusing---the copper scrap bits of oven dry are joined in preheated induction furnace and carry out melting, and when melting, copper liquid temperature is controlled at 1165～1175 DEG C, and fusing time was controlled in 6 hours;
1.4, skim scum silica frost---waterbornely skim dun scum silica frost from the copper of fusing with steel spoon, until scum silica frost area is less than 20% of burner hearth area;
1.5, chemical examination---from skim the copper water scum silica frost, get after the copper water cooling of 50 grams～100 grams, carry out the chemical examination of copper content, if copper content control is between 58%～59%, directly whole copper water is poured in holding furnace; If copper content, not in 58%～59% scope, is greater than 93% useless red copper core by No. 0 pure zinc and copper content copper water is adjusted to composition, zincification when copper content is high, copper content is low adds useless red copper core.Operation repeatedly, until copper content control after between 58%～59%, is poured whole copper water in holding furnace into;
1.6, liquation insulation---the copper liquid having melted is incubated, copper coolant-temperature gage is controlled in 850 DEG C～875 DEG C;
1.7, shaping---select graphite to make corresponding mould, copper water is derived from mould;
1.8, traction continuous casting---the poker of deriving from last process is introduced to traction conticaster, and for the copper water of 850 DEG C～875 DEG C, the traction speed of adjusting traction machine is 0.7 m/min～0.9 m/min, make poker after the pinch roller of traction machine by the uniform velocity stretching;
1.9, cutting---require copper bar to carry out the cutting of fixed quantity of different length according to user's instructions for use and storage, make copper rod;
1.10, slightly scrape---with alloy mold, copper rod profile is slightly scraped and repaired 3 times, each repairing all makes copper rod external diameter than last time little 0.2mm;
1.11, alignment---the copper rod after slightly scraping is carried out to alignment with straightener;
1.12, shuttle light---to slightly scraping and the copper bar appearance of alignment is pushed shuttle light, improve surface smoothness with equidimension Alloy Model;
1.13, excessively oily---evenly spread upon the poker surface through shuttle light with edible vegetable oil, prevent copper material oxidation, variable color;
1.14, tempering---the copper rod after above-mentioned processing step is tied up and is neatly placed on tempering car, place 3 hours with 80 DEG C of temperature, then place 3.5 hours with 60 DEG C of temperature;
1.15, inspection---appearance, straight degree to copper rod are tested, and certified products warehouse-in is for sale, and defective work melts down refuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310005571.XA CN103909242B (en) | 2013-01-08 | 2013-01-08 | The method of producing copper rod considered to be worth doing by a kind of copper scrap that utilizes |
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| CN201310005571.XA CN103909242B (en) | 2013-01-08 | 2013-01-08 | The method of producing copper rod considered to be worth doing by a kind of copper scrap that utilizes |
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| CN103909242A true CN103909242A (en) | 2014-07-09 |
| CN103909242B CN103909242B (en) | 2015-12-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599789A (en) * | 2015-02-02 | 2015-05-06 | 鹰潭瑞鑫铜业有限公司 | Process for producing round copper wire for electrical purpose through scrap copper |
| CN104651642A (en) * | 2014-11-12 | 2015-05-27 | 新兴铸管（浙江）铜业有限公司 | Method for producing C3604 brass rod from scrap copper |
| CN107537985A (en) * | 2016-06-27 | 2018-01-05 | 日立金属株式会社 | The manufacture device and manufacture method of copper alloy material |
| CN108004404A (en) * | 2017-10-24 | 2018-05-08 | 镇江市丹徒区华发五金有限公司 | A kind of method for handling the copper scale produced in copper tip production process |
| CN108165746A (en) * | 2017-12-01 | 2018-06-15 | 江西金宏铜业有限公司 | A kind of processing method of copper scrap bits |
| CN108823428A (en) * | 2018-07-17 | 2018-11-16 | 安徽润藤电缆材料科技有限公司 | A kind of preparation method of oxygen-free copper bar |
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| US20010029659A1 (en) * | 2000-02-24 | 2001-10-18 | Mitsubishi Materials Corporation | Method for manufacturing low-oxygen copper |
| JP2005313208A (en) * | 2004-04-30 | 2005-11-10 | Furukawa Electric Co Ltd:The | Copper for wire rod and producing method therefor |
| CN1958182A (en) * | 2006-10-26 | 2007-05-09 | 潘德君 | Method for producing continuous casting, and tandem rolling copper rod from all of copper scrap |
| CN101054633A (en) * | 2007-05-22 | 2007-10-17 | 马鞍山市威龙科工贸有限公司 | Waste copper recasting process |
| 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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Patent Citations (5)
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| US20010029659A1 (en) * | 2000-02-24 | 2001-10-18 | Mitsubishi Materials Corporation | Method for manufacturing low-oxygen copper |
| JP2005313208A (en) * | 2004-04-30 | 2005-11-10 | Furukawa Electric Co Ltd:The | Copper for wire rod and producing method therefor |
| CN1958182A (en) * | 2006-10-26 | 2007-05-09 | 潘德君 | Method for producing continuous casting, and tandem rolling copper rod from all of copper scrap |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104651642A (en) * | 2014-11-12 | 2015-05-27 | 新兴铸管（浙江）铜业有限公司 | Method for producing C3604 brass rod from scrap copper |
| CN104651642B (en) * | 2014-11-12 | 2016-09-28 | 新兴铸管（浙江）铜业有限公司 | A kind of copper scap produces the method for C3604 brass bar |
| CN104599789A (en) * | 2015-02-02 | 2015-05-06 | 鹰潭瑞鑫铜业有限公司 | Process for producing round copper wire for electrical purpose through scrap copper |
| CN107537985A (en) * | 2016-06-27 | 2018-01-05 | 日立金属株式会社 | The manufacture device and manufacture method of copper alloy material |
| CN108004404A (en) * | 2017-10-24 | 2018-05-08 | 镇江市丹徒区华发五金有限公司 | A kind of method for handling the copper scale produced in copper tip production process |
| CN108165746A (en) * | 2017-12-01 | 2018-06-15 | 江西金宏铜业有限公司 | A kind of processing method of copper scrap bits |
| CN108823428A (en) * | 2018-07-17 | 2018-11-16 | 安徽润藤电缆材料科技有限公司 | A kind of preparation method of oxygen-free copper bar |
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| CN103909242B (en) | 2015-12-09 |
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