CN103045883A - Method for utilizing waste copper-clad aluminum lead wire to smelt aluminum-copper intermediate alloy - Google Patents
Method for utilizing waste copper-clad aluminum lead wire to smelt aluminum-copper intermediate alloy Download PDFInfo
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- CN103045883A CN103045883A CN2012104709554A CN201210470955A CN103045883A CN 103045883 A CN103045883 A CN 103045883A CN 2012104709554 A CN2012104709554 A CN 2012104709554A CN 201210470955 A CN201210470955 A CN 201210470955A CN 103045883 A CN103045883 A CN 103045883A
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Abstract
The invention discloses a method for utilizing a waste copper-clad aluminum lead wire to smelt an aluminum-copper intermediate alloy. According to the method disclosed by the invention, a copper-clad pure aluminum lead wire and less waste pure copper are used as raw materials; a medium-frequency induction furnace or a crucible furnace is used as smelting equipment; and an instrument for rapidly analyzing chemical components in front of the furnace is adopted to smelt an aluminum-copper alloy ingot (AlCu50) meeting YS/T282-2000 requirements. The method for smelting the aluminum-copper intermediate alloy disclosed by the invention is a process method which is simpler and has greater output and lower cost, has a wide market prospect in China, and is a good method for recycling and circularly utilizing the waste copper-clad aluminum lead wire.
Description
Technical field
The invention belongs to scrap metal and reclaim and recycling field, it relates to a kind of method with copper scrap alclad wire melting aluminum bronze intermediate alloy.
Background technology
" master alloy " is one or more elements of adding in casting alloy and the alloy material of special preparation.Aluminum bronze intermediate alloy is the alloying element additive of the cast aluminium alloy of melting cupric and the cast copper alloy that contains aluminium.Copper cladding aluminum conductor be a kind of take aluminium as core body, the double metallic composite material of its outer cladding copper layer.It is little, low-cost with high conductivity, chemical stability, the contact resistance of copper density little and aluminium, aboundresources comes together in one, reaches the purpose that reduces cost, " with aluminium joint copper ".The original intention of research and development copper cladding aluminum conductor is the inner conductor for transmitting radio frequency signal, to save the copper material, to reduce cost, weight reduction.But because the rare and copper valency of China's copper resource is high, in industrial and civilian electric wire, be conductor with copper cladding aluminum conductor gradually also in recent years, thereby the output of copper cladding aluminum conductor increase year by year.At present, China has formed the novel industry of a professional production copper cladding aluminum conductor.Oneself realizes metallurgical binding in view of copper aluminium interface in the copper cladding aluminum conductor, can't separate with general mechanical means.Therefore, people consider from the recycle aspect of the Sustainable development of economic society and nonferrous metal resource, the waste material that produces in the copper cladding aluminum conductor production process at present and how it is reclaimed when these copper cover aluminum cables are scrapped in the future and utilize.The manufacturing enterprise of copper cladding aluminum conductor and relevant institution of higher learning, waste metal are recycled enterprise oneself have been carried out more research in this respect, have obtained gratifying achievement.The patent No. is that 200810019972.X and 200910302911.9 discloses a kind of method with electrolytic process separating copper and aluminium.The former obtains metallic copper and metallic aluminium, and the latter obtains metallic aluminium and copper-bath, and the copper-bath evaporative crystallization can be produced the industrial chemicals copper sulfate crystal.These methods have certain practical value to the recycling of copper scrap alclad wire.In order to enlarge the recycling scope of copper scrap alclad wire, the invention provides and a kind ofly directly do not reclaim aluminium and copper (or industrial chemicals of copper) but with its mode that is smelted into aluminum bronze intermediate alloy, make copper scrap alclad wire in nonferrous production, obtain regeneration.
Summary of the invention
The present invention provides a kind of method with copper scrap alclad wire melting aluminum bronze intermediate alloy for solving the problems of the technologies described above.Concrete scheme is as follows:
A kind of method with copper scrap alclad wire melting aluminum bronze intermediate alloy, its step is as follows:
(1) first copper scrap alclad wire is entered stove, until all adding useless fine copper after the fusing.Remove the gred behind the fine melt, add insulating covering agent (KCl+NaCl by 1 ︰ 1 forms);
(2) be warming up to 720 ℃～740 ℃, refining 5min～8min;
(3) after refining finishes, leave standstill aluminium alloy 6min～8min;
(4) leave standstill and rear the body alloy is carried out both analysis, adjust chemical ingredients;
(5) when the melting equipment temperature was down to 680 ℃～710 ℃, Ex-all liquid level scum silica frost poured into aluminium alloy in the ingot mould of thickness≤25mm.
Among the present invention, described copper scrap alclad wire is that the bimetallic conductor of scrapping is carried out sorting, reject copper sheathed steel and copper clad aluminum magnesium alloy wire after, with the wire of copper-clad fine aluminium and be equipped with the fine copper that gives up on a small quantity and carry out melting and form.
Among the present invention, need in copper, add 5%～10% aluminium.These aluminium also can add with aluminum bronze intermediate alloy.
Among the present invention, in the aluminum bronze intermediate alloy content of copper in 48%～52% scope, and the fluctuation range of various impurity elements must not be above standard prescribed value ± 2%.
Among the present invention, when carrying out sorting, adopt the electromagnetic separation method, will be removed by the copper sheathed steel line conductor row of electromagnetic attracting force.
Among the present invention, when carrying out sorting, employing can be differentiated the metallic substance eddy current sorter of copper cover aluminum and copper clad aluminum magnesium alloy, the copper clad aluminum magnesium alloy wire can be sorted out.
Among the present invention, need will mixed and disorderly copper cladding aluminum conductor in briquetting press, to be pressed into bulk closely knit, that mate with the smelting furnace size.
Among the present invention, also need to add the furnace charges such as an amount of fine copper waste material, insulating covering agent, slag former, degasifier.
Among the present invention, the fine copper waste material that adds need to adapt with its copper content.
Among the present invention, used melting equipment is medium-frequency induction furnace or crucible oven, and is equipped with the instrument of both analysis chemical ingredients.
When melting copper-contained cast aluminium alloy, need add copper.Because the fusing point of copper is more much higher than aluminium, directly adding copper in aluminium liquid has certain difficulty.For copper can evenly be dissolved in the aluminium liquid, must add with the lower aluminum bronze intermediate alloy form of fusing point.The fusing point of aluminum bronze intermediate alloy, relevant with copper content.The copper content of regulation aluminum-copper alloy ingot is 50% (AlCu50) among the non-ferrous metal industry standard YS/T282-2000 " aluminium intermediate alloy ingot ", and its fusing point is about 600 ℃.But copper cladding aluminum conductor is different according to copper layer volume ratio (10% and 15%), and copper layer weight wherein accounts for 27%～37%, and its fusing point is in 650 ℃～820 ℃ scopes.Therefore with copper scrap alclad wire melting aluminum bronze intermediate alloy the time, should add the fine copper waste material and adjust its copper content.
The trade mark of copper-contained cast aluminium alloy has multiple, and its copper content is in 4%～14% scope, i.e. 1 ton of casting Al-Cu alloy of melting on average need add 100kg copper, if then need 200kg with the aluminum bronze intermediate alloy adding.Flourish along with Domestic Automotive Industry, the application of cast aluminium alloy in automobile component is increasing, and the annual production of China's cast aluminium alloy surpasses 2,000,000 tons, wherein contains X alloy and occupies certain proportion, therefore, the application of aluminum bronze intermediate alloy is quite extensive.
In addition, the cast copper alloy that contains aluminium in production is when (being called xantal), needs to add in copper 5%～10% aluminium.These aluminium also can add with aluminum bronze intermediate alloy.
Beneficial effect: the melting copper aluminium intermediate alloy be one comparatively easy, output is larger, lower-cost processing method, has wide market outlook in China, is a large amount of the recovery and the good method of recycle copper scrap alclad wire.
Embodiment
Embodiment 1.
A kind of method with copper scrap alclad wire melting aluminum bronze intermediate alloy, its step is as follows:
(1) first copper scrap alclad wire is entered stove, until all adding useless fine copper after the fusing.Remove the gred behind the fine melt, add insulating covering agent (KCl+NaCl by 1 ︰ 1 forms);
(2) be warming up to 720 ℃, refining 5min;
(3) after refining finishes, leave standstill aluminium alloy 8min;
(4) leave standstill and rear the body alloy is carried out both analysis, adjust chemical ingredients;
(5) when the melting equipment temperature is down to 700 ℃, Ex-all liquid level scum silica frost pours into aluminium alloy in the ingot mould of thickness 20mm.
Embodiment 2.
A kind of method with copper scrap alclad wire melting aluminum bronze intermediate alloy, its step is as follows:
(1) first copper scrap alclad wire is entered stove, until all adding useless fine copper after the fusing.Remove the gred behind the fine melt, add insulating covering agent (KCl+NaCl by 1 ︰ 1 forms);
(2) be warming up to 740 ℃, refining 7min;
(3) after refining finishes, leave standstill aluminium alloy 8min;
(4) leave standstill and rear the body alloy is carried out both analysis, adjust chemical ingredients;
(5) when the melting equipment temperature is down to 680 ℃, Ex-all liquid level scum silica frost pours into aluminium alloy in the ingot mould of thickness 18mm.
Adopt the electromagnetic separation method, will be removed by the copper sheathed steel line conductor row of electromagnetic attracting force.
Also need to add the furnace charges such as an amount of fine copper waste material, insulating covering agent, slag former, degasifier.
The fine copper waste material that adds need to adapt with its copper content.
Used melting equipment is medium-frequency induction furnace, and is equipped with the instrument of both analysis chemical ingredients.
2. the preparation of raw-material sorting and furnace charge:
At present domestic relevant enterprise produces bimetallic wire and mainly contains two large class, i.e. copper cladding aluminum conductor and copper sheathed steel wires.Copper cladding aluminum conductor can be divided into again two kinds in copper cover aluminum (fine aluminium) wire and copper clad aluminum magnesium alloy wire by the chemical ingredients difference of aluminium.
Being used for the starting material of production of copper aluminium intermediate alloy can only be copper cladding aluminum conductor.Often three kinds of materials are mixed in together but in the waste leading wire of purchase.In order to guarantee that copper-aluminium master alloy has accurately chemical ingredients, at first must carry out sorting to the starting material of buying.
Adopt the electromagnetic separation method, will be removed by the copper sheathed steel line conductor row of electromagnetic attracting force.
Employing can be differentiated the metallic substance eddy current sorter of copper cover aluminum and copper clad aluminum magnesium alloy, the copper clad aluminum magnesium alloy wire can be sorted out.
Remaining copper cladding aluminum conductor is exactly the starting material of production of copper aluminium intermediate alloy.
It is convenient to enter stove during for melting, needs will mixed and disorderly copper cladding aluminum conductor be pressed in briquetting press bulk closely knit, that mate with the smelting furnace size.
In addition, the furnace charges such as preparing fine copper waste material, insulating covering agent, slag former, degasifier of still needing.
The instrument of both analysis chemical ingredients (such as direct-reading spectrometer):
Be used for before melting finishes, analyzing quickly and accurately the chemical ingredients of master alloy, so that the element in the alloy is adjusted immediately.
The present invention is described by embodiment, and those skilled in the art know, in the situation that does not break away from the spirit and scope of the present invention, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under instruction of the present invention, can make amendment to adapt to concrete situation and material to these features and embodiment and can not break away from the spirit and scope of the present invention.Therefore, the present invention is not subjected to the restriction of specific embodiment disclosed herein, and all interior embodiment of claim scope that fall into the application belong to protection scope of the present invention.
Claims (10)
1. method with copper scrap alclad wire melting aluminum bronze intermediate alloy, its step is as follows:
(1) first copper scrap alclad wire is entered stove, until all adding useless fine copper after the fusing;
Remove the gred behind the fine melt, add insulating covering agent (KCl+NaCl by 1 ︰ 1 forms);
(2) be warming up to 720 ℃～740 ℃, refining 5min～8min;
(3) after refining finishes, leave standstill aluminium alloy 6min～8min;
(4) leave standstill and rear the body alloy is carried out both analysis, adjust chemical ingredients;
(5) when the melting equipment temperature was down to 680 ℃～710 ℃, Ex-all liquid level scum silica frost poured into aluminium alloy in the ingot mould of thickness≤25mm.
2. the method with copper scrap alclad wire melting aluminum bronze intermediate alloy according to claim 1, it is characterized in that, described copper scrap alclad wire is that the bimetallic conductor of scrapping is carried out sorting, after rejecting copper sheathed steel and copper clad aluminum magnesium alloy wire, with the wire of copper-clad fine aluminium and be equipped with the fine copper that gives up on a small quantity and carry out melting and form.
3. the method with copper scrap alclad wire melting aluminum bronze intermediate alloy according to claim 1 is characterized in that need to add 5%～10% aluminium in copper, these aluminium also can add with aluminum bronze intermediate alloy.
4. the method with copper scrap alclad wire melting aluminum bronze intermediate alloy according to claim 1, it is characterized in that, the content of copper is in 48%～52% scope in the aluminum bronze intermediate alloy, and the fluctuation range of various impurity elements must not be above standard prescribed value ± 2%.
5. the method with copper scrap alclad wire melting aluminum bronze intermediate alloy according to claim 2 is characterized in that, when carrying out sorting, adopts the electromagnetic separation method, will be removed by the copper sheathed steel line conductor row of electromagnetic attracting force.
6. the method with copper scrap alclad wire melting aluminum bronze intermediate alloy according to claim 2, it is characterized in that, when carrying out sorting, employing can be differentiated the metallic substance eddy current sorter of copper cover aluminum and copper clad aluminum magnesium alloy, the copper clad aluminum magnesium alloy wire can be sorted out.
7. the method with copper scrap alclad wire melting aluminum bronze intermediate alloy according to claim 1 is characterized in that, needs will mixed and disorderly copper cladding aluminum conductor be pressed in briquetting press bulk closely knit, that mate with the smelting furnace size.
8. the method with copper scrap alclad wire melting aluminum bronze intermediate alloy according to claim 1 is characterized in that, also needs to add the furnace charges such as an amount of fine copper waste material, insulating covering agent, slag former, degasifier.
9. the method with copper scrap alclad wire melting aluminum bronze intermediate alloy according to claim 2 is characterized in that the fine copper waste material that adds need to adapt with its copper content.
10. the method with copper scrap alclad wire melting aluminum bronze intermediate alloy according to claim 1 is characterized in that used melting equipment is medium-frequency induction furnace or crucible oven, and is equipped with the instrument of both analysis chemical ingredients.
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| CN2012104709554A CN103045883A (en) | 2012-11-20 | 2012-11-20 | Method for utilizing waste copper-clad aluminum lead wire to smelt aluminum-copper intermediate alloy |
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| CN2012104709554A CN103045883A (en) | 2012-11-20 | 2012-11-20 | Method for utilizing waste copper-clad aluminum lead wire to smelt aluminum-copper intermediate alloy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048267A (en) * | 2015-04-13 | 2016-10-26 | 日立金属株式会社 | Alloying-element additive and method of manufacturing copper alloy |
| CN109652668A (en) * | 2019-01-31 | 2019-04-19 | 青海桥头铝电股份有限公司 | A kind of production method of aluminum bronze intermediate alloy |
| CN111549257A (en) * | 2020-06-03 | 2020-08-18 | 佛山市桂源锌合金材料有限公司 | Zinc alloy with low cost and good tensile strength and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730698A (en) * | 2005-08-03 | 2006-02-08 | 山东大学 | Aluminium-silicon-copper-magnesium pack alloy and its preparing process |
| CN1884598A (en) * | 2006-07-04 | 2006-12-27 | 江苏常铝铝业股份有限公司 | Aluminum foil for hot rolling blank auto radiator fin and its production method |
| CN102505075A (en) * | 2011-12-23 | 2012-06-20 | 安徽绿能技术研究院 | Method of producing copper alloy by utilizing copper clad aluminum scrap |
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2012
- 2012-11-20 CN CN2012104709554A patent/CN103045883A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730698A (en) * | 2005-08-03 | 2006-02-08 | 山东大学 | Aluminium-silicon-copper-magnesium pack alloy and its preparing process |
| CN1884598A (en) * | 2006-07-04 | 2006-12-27 | 江苏常铝铝业股份有限公司 | Aluminum foil for hot rolling blank auto radiator fin and its production method |
| CN102505075A (en) * | 2011-12-23 | 2012-06-20 | 安徽绿能技术研究院 | Method of producing copper alloy by utilizing copper clad aluminum scrap |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048267A (en) * | 2015-04-13 | 2016-10-26 | 日立金属株式会社 | Alloying-element additive and method of manufacturing copper alloy |
| CN106048267B (en) * | 2015-04-13 | 2019-09-17 | 日立金属株式会社 | Alloying element adds the manufacturing method of material and copper alloy material |
| CN109652668A (en) * | 2019-01-31 | 2019-04-19 | 青海桥头铝电股份有限公司 | A kind of production method of aluminum bronze intermediate alloy |
| CN111549257A (en) * | 2020-06-03 | 2020-08-18 | 佛山市桂源锌合金材料有限公司 | Zinc alloy with low cost and good tensile strength and preparation method thereof |
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Application publication date: 20130417 |