CN101240430A - Method for reclaiming copper and aluminum form copper-clad aluminum wire waste material and anode device used for electrolysis equipment thereof - Google Patents
Method for reclaiming copper and aluminum form copper-clad aluminum wire waste material and anode device used for electrolysis equipment thereof Download PDFInfo
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- CN101240430A CN101240430A CNA200810019972XA CN200810019972A CN101240430A CN 101240430 A CN101240430 A CN 101240430A CN A200810019972X A CNA200810019972X A CN A200810019972XA CN 200810019972 A CN200810019972 A CN 200810019972A CN 101240430 A CN101240430 A CN 101240430A
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Abstract
The invention discloses a method for recovering copper and aluminum from copper-clad aluminum conductor scrap and an anode device for the electrolytic equipment of the method. The method comprises the following steps of: (1) preparing the anode device of the electrolytic equipment, the anode device being provided with metal titanium part and copper-clad aluminum bare conductor separately contacting therewith; (2) adding electrolyte to the electrobath, putting a copper plate as a cathode to the electrolyte of the electrobath, and an anode devide as an anode to the electrolyte of the electrobath; and (3) electrifying direct current to electrolyze, stopping electrolyzing when the voltage of the electrobath being obviously increased, and recovering the aluminum in the anode device and copper on the copper plate. The invention can separate metal copper and aluminum of copper-clad aluminum conductor scrap by electrolysis, the needed equipment is simple, easy to operate and consumes little electric energy, and the cost is low.
Description
Technical field
The invention belongs to the metal recovery field, be specifically related to the anode assembly of the used for electrolysis equipment of a kind of method that from the copper cladding aluminum conductor waste material, reclaims copper and aluminium and this method.
Background technology
Copper has good electrical conductivity, and its resistivity is 0.01851 Ω mm
2/ m, and the Standard Electrode Potentials of copper is higher, can not cause brass work to scrap, lost efficacy because of corroding fast at occurring in nature.Therefore, copper is regarded as the preferred material of cable inner conductor always.But the density of copper is higher, and the copper resource is relatively more rare, and the price of pure cu conductor is higher.Along with the continuous development and the progress of compounding technology, under the prerequisite that guarantees conductivity, adopt compounding technology, to reduce production costs, become the target that domestic and international research and development personnel make great efforts with cheap metal part instead of copper.Wherein the copper cover aluminum bimetallic composite wire rod is a kind of more satisfactory substitute.The structure of copper-clad aluminum conductor is the outer fine copper that is, its thickness is less, and core is a metallic aluminium.Copper-clad aluminum conductor has certain advantage than pure copper wire: the one, have ductility and workability preferably, and copper-clad aluminum conductor can carry out drawing and anneal as pure copper wire, and also further deep processing becomes copper-clad enameled wire and silver-plated, copper tinned aluminum wire; The 2nd, have unique composite performance, copper-clad aluminum conductor possesses the electroconductibility of copper and the little composite attribute of density of aluminium simultaneously; The 3rd, possess tangible economic benefit, the density of copper-clad aluminum conductor only is 36.5%～41.6% of pure copper wire, its length is 2.45～2.65 times of pure copper wire of equivalent weight, equivalent diameter; The 4th, remarkable social benefit and environmental benefit, copper-clad aluminum conductor can be saved a large amount of rare copper resources, alleviate cable weight, be convenient to transportation and construction, alleviate labor strength, and clad welded method production technique can not produce environmental pollution yet.Therefore, copper-clad aluminum conductor not only has vast market prospect, and range of application is also in continuous expansion.
Yet, can produce the waste material of some amount owing to the technical reason in the copper cladding aluminum conductor production process.Along with applying of copper cladding aluminum conductor, its lead reclamation of waste materials progressively becomes the difficult problem of professional, also becomes the technology barrier that China's wires and cables industry is promoted copper clad aluminum conductor.Still the relevant report of not having at present the copper cover aluminum waste recovery.
Summary of the invention
First purpose of the present invention is the deficiency at above-mentioned technology, proposes a kind of method that reclaims copper and aluminium from the copper cladding aluminum conductor waste material.Second purpose of the present invention is to propose a kind of anode assembly that reclaims the used for electrolysis equipment of copper and aluminium from the copper cladding aluminum conductor waste material.
The technical scheme that realizes the present invention's first purpose is: a kind of method that reclaims copper and aluminium from the copper cladding aluminum conductor waste material, have following steps: the anode assembly of 1. preparing electrolyzer, this anode assembly has metal titanium spare and copper cover aluminum naked cable waste material, metal titanium spare is in contact with one another with copper cover aluminum naked cable waste material, and this being in contact with one another is detachable being in contact with one another; 2. add electrolytic solution in electrolyzer, wherein the electrolytic solution composition is the CuSO of 129g/L～148g/L
45H
2The H of O and 150g/L～220g/L
2SO
4The copper plate body is put into the electrolytic solution of electrolyzer as negative electrode, the anode assembly of step in 1. put into the electrolytic solution of electrolyzer as anode; 3. begin logical direct current and carry out electrolysis, wherein bath voltage is 0.15V～0.3V, and current density is 200A/m
2～300A/m
2, electrolysis temperature is 20 ℃～35 ℃, the distance between the anode and cathode is 2cm～3cm; When electrolysis when bath voltage obviously increases, stop electrolysis, reclaim aluminium in the anode assembly and the copper on the copper plate body.
The metal titanium spare of the anode assembly of above-mentioned steps in 1. has the first titanium net and titanium rod, and anode assembly also has the anode frame that plastics are made, and anode frame is that 35%～45% cellular-plastic panels is made by porosity; The first titanium net is placed in the anode frame, copper cover aluminum naked cable waste material is placed on first titanium and forms the first heap copper cover aluminum naked cable on the net, the copper cover aluminum naked cable and the first titanium net that are in contact with one another between each adjacent copper cover aluminum naked cable in the first heap copper cover aluminum naked cable and are positioned at the bottom are in contact with one another, in the titanium rod insertion first heap copper cover aluminum naked cable and contact with the first heap copper cover aluminum naked cable and the titanium rod also is in contact with one another with the first titanium net.
The metal titanium spare of the anode assembly of above-mentioned steps in 1. also has the titanium grain, and these titanium grains are dispersed in the centre of the first heap copper cover aluminum naked cable.
The anode assembly of above-mentioned steps in 1. also has the second titanium net and is placed on the online copper cover aluminum naked cable waste material of second titanium, and this is placed on the online copper cover aluminum naked cable waste material of second titanium and forms the second heap copper cover aluminum naked cable; Top, its bottom that the second titanium net is placed on the first heap copper cover aluminum naked cable contact with the first heap copper cover aluminum naked cable, and its top then contacts with the second heap copper cover aluminum naked cable; The titanium rod passes under last and is plugged on the second heap copper cover aluminum naked cable, the second titanium net, the first heap copper cover aluminum naked cable and the first titanium net, and contacts with the second heap copper cover aluminum naked cable, the second titanium net, the first heap copper cover aluminum naked cable and the first titanium net simultaneously; The metal titanium spare of anode assembly also has and is dispersed in the second heap copper cover aluminum naked cable intermediary titanium grain.
The bath voltage of above-mentioned steps in 3. is 0.20V, and current density is 250A/m
2, electrolysis temperature is 25 ℃.
Above-mentioned steps 1. in used copper cover aluminum naked cable waste material be with waste electrolyte soak except that obtain or remove behind the part soluble impurity on the copper cover aluminum lead waste material on the copper cladding aluminum conductor waste material plastic foreskin or the insulation paint film obtain.
The technical scheme that realizes the present invention's second purpose is: a kind of anode assembly that reclaims the used for electrolysis equipment of copper and aluminium from the copper cladding aluminum conductor waste material, have metal titanium spare and copper cover aluminum naked cable waste material, metal titanium spare is in contact with one another with copper cover aluminum naked cable waste material, and this being in contact with one another is detachable being in contact with one another.
The metal titanium spare of above-mentioned anode assembly has the first titanium net and titanium rod, and anode assembly also has the anode frame that plastics are made, and anode frame is that 35%～45% cellular-plastic panels is made by porosity; The first titanium net is placed in the anode frame, copper cover aluminum naked cable waste material is placed on first titanium and forms the first heap copper cover aluminum naked cable on the net, the copper cover aluminum naked cable that is in contact with one another between each adjacent copper cover aluminum naked cable in the first heap copper cover aluminum naked cable and is positioned at the bottom contacts with the first titanium net, in the titanium rod insertion first heap copper cover aluminum naked cable and contact with the first heap copper cover aluminum naked cable and the titanium rod also contacts with the first titanium net.
Above-mentioned metal titanium spare also has the titanium grain, and these titanium grains are dispersed in the centre of the first heap copper cover aluminum naked cable.
Above-mentioned anode assembly also has the second titanium net and is placed on the online copper cover aluminum naked cable waste material of second titanium, and this is placed on the online copper cover aluminum naked cable waste material of second titanium and forms the second heap copper cover aluminum naked cable; Top, its bottom that the second titanium net is placed on the first heap copper cover aluminum naked cable contact with the first heap copper cover aluminum naked cable, and its top then contacts with the second heap copper cover aluminum naked cable; The titanium rod passes under last and is plugged on the second heap copper cover aluminum naked cable, the second titanium net, the first heap copper cover aluminum naked cable and the first titanium net, and contacts with the second heap copper cover aluminum naked cable, the second titanium net, the first heap copper cover aluminum naked cable and the first titanium net; The metal titanium spare of anode assembly also has and is dispersed in the second heap copper cover aluminum naked cable intermediary titanium grain.
The positively effect that the present invention has: (1) the present invention adopts electrolytic method, directly copper cover aluminum naked cable waste material is separated metallic copper by electrolysis with metallic aluminium in electrolyzer, required equipment is succinct, and is easy to operate, only need expend small amount of electrical energy, cost is low.(2) dissolving consumption does not take place in metallic aluminium in the copper cover aluminum naked cable waste material substantially under electrolytic condition of the present invention, and when the copper dissolution of naked cable scraped surface was complete, anodic oxidation can take place aluminium, generates passive film on its surface, reduces its electroconductibility.Therefore, when bath voltage in the electrolytic process obviously increases (current density is constant), can stop electrolytic reaction, at this moment the rate of recovery of metallic aluminium is more than 93%, and the rate of recovery of metallic copper is more than 96%.(3) CuSO of the present invention's employing
4-H
2SO
4Electrolytic solution can be recycled in electrolytic process, has realized zero consume of electrolytic solution basically.(4) not having waste gas, waste liquid generation and discharging in whole electrolytic process, do not pollute the environment, is the very recovery technology of environmental protection.(5) method of the present invention is applicable to the recovery of the waste material that produces in the process of making copper cladding aluminum conductor.In addition, when copper cladding aluminum conductor is used for manufactured copper alclad cable, for the waste product of scrapping after waste product that in the process of copper cladding aluminum conductor outside surface coating plastic, produces or the use of these copper cover aluminum cables, waste product is put into liquid nitrogen, take out after making the plastics embrittlement that is enclosed within the copper material outside surface, shake can be taken off the plastic foreskin of appearance, and remaining copper clad aluminum material can adopt method of the present invention to obtain metallic copper and metallic aluminium simultaneously.Enameled wire for copper cover aluminum can adopt burning method to remove the insulation enamelled coating of this copper cladding aluminum conductor scraped surface, and obtains the copper cover aluminum naked cable.
Description of drawings
Fig. 1 reclaims the anode assembly synoptic diagram of the used for electrolysis equipment of copper and aluminium from the copper cladding aluminum conductor waste material for the present invention.
Embodiment
(embodiment 1)
The raw material of present embodiment is the original copper cladding aluminum conductor waste material of diameter 2mm, quality 25g, and wherein the weight percent of copper (massfraction) is 33.3%.Should soak except that obtaining copper cover aluminum naked cable waste material behind the part soluble impurity with waste electrolyte by original copper cladding aluminum conductor waste material.
The method of present embodiment is as follows:
1. copper cover aluminum naked cable waste material is cut off and be processed into certain-length (be suitable for putting into anode frame, present embodiment is 10cm).
Referring to Fig. 1, it is in 40% the sponge plastics anode frame 1 that the first titanium net 21 is placed porositys, copper cover aluminum naked cable waste material is placed on the first titanium net 21 and forms the first heap copper cover aluminum naked cable 41, be in contact with one another between the adjacent copper cover aluminum naked cable waste material of in the first heap copper cover aluminum naked cable 41 each, and the copper cover aluminum naked cable and the first titanium net 21 that are positioned at the bottom are in contact with one another, one inserts in the first heap copper cover aluminum naked cable 41 and contacts with the first heap copper cover aluminum naked cable 41 as the titanium of electrical conductor rod 3, and titanium rod 3 also is in contact with one another with the first titanium net 21, and this being in contact with one another is detachable being in contact with one another.Anode frame 1, the first titanium net 21, titanium the rod 3 and first heap copper cover aluminum naked cable 41 constitute the anode assembly of present embodiment.
2. add electrolytic solution in electrolyzer, wherein the electrolytic solution composition is the H of 180g/L
2SO
4CuSO with 140g/L
45H
2O (Cu wherein
2+Be 36g/L).With lateral area is 22.5cm
2The copper plate body put into the electrolytic solution of electrolyzer as negative electrode, the anode assembly of step in 1. put into the electrolytic solution of electrolyzer as anode.
3. begin logical direct current and carry out electrolysis, wherein bath voltage is 0.25V, and current density is 250A/m
2, electrolysis temperature is 35 ℃, the distance between the anode and cathode is 2cm.When electrolysis (at this moment current density remains unchanged) when bath voltage obviously increases, stop electrolysis, reclaim aluminium in the anode assembly and the copper on the copper plate body.
The rate of recovery of the metallic copper of present embodiment is 96.5%, and the rate of recovery of metallic aluminium is 96.3%.Anodic current efficiency is 94.2%, and cathode efficiency is 98.5%.
(embodiment 2)
The method of present embodiment is with embodiment 1, and difference is:
Original copper cladding aluminum conductor waste material diameter is 1mm, and quality is 250g, the plastic foreskin on the original copper cladding aluminum conductor waste material is removed obtain copper cover aluminum naked cable waste material.Electrolytic condition and electrolysis the results are shown in Table 1.
The anode assembly of present embodiment step in 1. also has the second titanium net 22 and is placed on copper cover aluminum naked cable waste material on the second titanium net 22, and this copper cover aluminum naked cable waste material that is placed on the second titanium net 22 forms the second heap copper cover aluminum naked cable 42; Top, its bottom that the second titanium net 22 is placed on the first heap copper cover aluminum naked cable 41 contact with the first heap copper cover aluminum naked cable 41, and its top then contacts with the second heap copper cover aluminum naked cable 42; Titanium rod 3 passes under last and is plugged on the second heap copper cover aluminum naked cable 42, the second titanium net 22, the first heap copper cover aluminum naked cable 41 and the first titanium net 21, and contacts with the second heap copper cover aluminum naked cable 42, the second titanium net 22, the first heap copper cover aluminum naked cable 41 and the first titanium net 21 simultaneously.
Also have in the anode assembly and be dispersed in the first heap copper cover aluminum naked cable, 41 intermediary titanium grains and be dispersed in the second heap copper cover aluminum naked cable, 42 intermediary titanium grains.
(embodiment 3)
The method of present embodiment is with embodiment 2, and difference is: electrolytic condition and electrolysis result (seeing Table 1).
(embodiment 4)
The method of present embodiment is with embodiment 2, and difference is: electrolytic condition and electrolysis result (seeing Table 1).
(embodiment 5)
The method of present embodiment is with embodiment 2, and difference is: original copper cladding aluminum conductor waste material diameter is 3mm, and quality is 2500g, the insulation paint film on the original copper cladding aluminum conductor waste material is removed obtained copper cover aluminum naked cable waste material.Electrolytic condition and electrolysis the results are shown in Table 1.
The anode assembly of present embodiment step in 1. also has Tritanium/Trititanium net 23 and is placed on copper cover aluminum naked cable waste material on the Tritanium/Trititanium net 23, and this copper cover aluminum naked cable waste material that is placed on the Tritanium/Trititanium net 23 forms the 3rd heap copper cover aluminum naked cable 43; Top, its bottom that Tritanium/Trititanium net 23 is placed on the second heap copper cover aluminum naked cable 42 contact with the second heap copper cover aluminum naked cable 42, and its top then contacts with the 3rd heap copper cover aluminum naked cable 43; Titanium rod 3 passes under last and is plugged on the 3rd heap copper cover aluminum naked cable 43, Tritanium/Trititanium net 23, the second heap copper cover aluminum naked cable 42, the second titanium net 22, the first heap copper cover aluminum naked cable 41 and the first titanium net 21, and contacts with the 3rd heap copper cover aluminum naked cable 43, Tritanium/Trititanium net 23, the second heap copper cover aluminum naked cable 42, the second titanium net 22, the first heap copper cover aluminum naked cable 41 and the first titanium net 21 simultaneously; The 3rd heap copper cover aluminum naked cable 43 intermediary also are dispersed with the titanium grain.
Table 1
Claims (10)
1, a kind of method that reclaims copper and aluminium from the copper cladding aluminum conductor waste material has following steps:
1. prepare the anode assembly of electrolyzer, this anode assembly has metal titanium spare and copper cover aluminum naked cable waste material, and metal titanium spare is in contact with one another with copper cover aluminum naked cable waste material, and this being in contact with one another is detachable being in contact with one another;
2. add electrolytic solution in electrolyzer, wherein the electrolytic solution composition is the CuSO of 129g/L～148g/L
45H
2The H of O and 150g/L～220g/L
2SO
4The copper plate body is put into the electrolytic solution of electrolyzer as negative electrode, the anode assembly of step in 1. put into the electrolytic solution of electrolyzer as anode;
3. begin logical direct current and carry out electrolysis, wherein bath voltage is 0.15V～0.3V, and current density is 200A/m
2～300A/m
2, electrolysis temperature is 20 ℃～35 ℃, the distance between the anode and cathode is 2cm～3cm; When electrolysis when bath voltage obviously increases, stop electrolysis, reclaim aluminium in the anode assembly and the copper on the copper plate body.
2, the method that from the copper cladding aluminum conductor waste material, reclaims copper and aluminium according to claim 1, it is characterized in that: the metal titanium spare of the anode assembly of step in 1. has the first titanium net and titanium rod, anode assembly also has the anode frame that plastics are made, and anode frame is that 35%～45% cellular-plastic panels is made by porosity; The first titanium net is placed in the anode frame, copper cover aluminum naked cable waste material is placed on first titanium and forms the first heap copper cover aluminum naked cable on the net, the copper cover aluminum naked cable and the first titanium net that are in contact with one another between each adjacent copper cover aluminum naked cable in the first heap copper cover aluminum naked cable and are positioned at the bottom are in contact with one another, in the titanium rod insertion first heap copper cover aluminum naked cable and contact with the first heap copper cover aluminum naked cable and the titanium rod also is in contact with one another with the first titanium net.
3, the method that reclaims copper and aluminium from the copper cladding aluminum conductor waste material according to claim 2 is characterized in that: the metal titanium spare of the anode assembly of step in 1. also has the titanium grain, and these titanium grains are dispersed in the centre of the first heap copper cover aluminum naked cable.
4, the method that from the copper cladding aluminum conductor waste material, reclaims copper and aluminium according to claim 3, it is characterized in that: the anode assembly of step in 1. also has the second titanium net and is placed on the online copper cover aluminum naked cable waste material of second titanium, and this is placed on the online copper cover aluminum naked cable waste material of second titanium and forms the second heap copper cover aluminum naked cable; Top, its bottom that the second titanium net is placed on the first heap copper cover aluminum naked cable contact with the first heap copper cover aluminum naked cable, and its top then contacts with the second heap copper cover aluminum naked cable; The titanium rod passes under last and is plugged on the second heap copper cover aluminum naked cable, the second titanium net, the first heap copper cover aluminum naked cable and the first titanium net, and contacts with the second heap copper cover aluminum naked cable, the second titanium net, the first heap copper cover aluminum naked cable and the first titanium net simultaneously; The metal titanium spare of anode assembly also has and is dispersed in the second heap copper cover aluminum naked cable intermediary titanium grain.
5, the method that reclaims copper and aluminium from the copper cladding aluminum conductor waste material according to claim 1 is characterized in that: the bath voltage of step in 3. is 0.20V, and current density is 250A/m
2, electrolysis temperature is 25 ℃.
6, according to the described method that from the copper cladding aluminum conductor waste material, reclaims copper and aluminium of one of claim 1 to 5, it is characterized in that: step 1. in used copper cover aluminum naked cable waste material be to soak except that obtaining or removes the plastic foreskin on the copper cladding aluminum conductor waste material behind the part soluble impurity on the copper cover aluminum lead waste material or the paint film that insulate obtains with waste electrolyte.
7, a kind of anode assembly that from the copper cladding aluminum conductor waste material, reclaims the used for electrolysis equipment of copper and aluminium, it is characterized in that: have metal titanium spare and copper cover aluminum naked cable waste material, metal titanium spare is in contact with one another with copper cover aluminum naked cable waste material, and this being in contact with one another is detachable being in contact with one another.
8, the anode assembly that from the copper cladding aluminum conductor waste material, reclaims the used for electrolysis equipment of copper and aluminium according to claim 7, it is characterized in that: the metal titanium spare of anode assembly has the first titanium net and titanium rod, anode assembly also has the anode frame that plastics are made, and anode frame is that 35%～45% cellular-plastic panels is made by porosity; The first titanium net is placed in the anode frame, copper cover aluminum naked cable waste material is placed on first titanium and forms the first heap copper cover aluminum naked cable on the net, the copper cover aluminum naked cable and the first titanium net that are in contact with one another between each adjacent copper cover aluminum naked cable in the first heap copper cover aluminum naked cable and are positioned at the bottom are in contact with one another, in the titanium rod insertion first heap copper cover aluminum naked cable and contact with the first heap copper cover aluminum naked cable and the titanium rod also is in contact with one another with the first titanium net.
9, the anode assembly that from the copper cladding aluminum conductor waste material, reclaims the used for electrolysis equipment of copper and aluminium according to claim 8, it is characterized in that: metal titanium spare also has the titanium grain, and these titanium grains are dispersed in the centre of the first heap copper cover aluminum naked cable.
10, the anode assembly that from the copper cladding aluminum conductor waste material, reclaims the used for electrolysis equipment of copper and aluminium according to claim 9, it is characterized in that: also have the second titanium net and be placed on the online copper cover aluminum naked cable waste material of second titanium, this is placed on the online copper cover aluminum naked cable waste material of second titanium and forms the second heap copper cover aluminum naked cable; Top, its bottom that the second titanium net is placed on the first heap copper cover aluminum naked cable contact with the first heap copper cover aluminum naked cable, and its top then contacts with the second heap copper cover aluminum naked cable; The titanium rod passes under last and is plugged on the second heap copper cover aluminum naked cable, the second titanium net, the first heap copper cover aluminum naked cable and the first titanium net, and contacts with the second heap copper cover aluminum naked cable, the second titanium net, the first heap copper cover aluminum naked cable and the first titanium net simultaneously; The metal titanium spare of anode assembly also has and is dispersed in the second heap copper cover aluminum naked cable intermediary titanium grain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810019972A CN100585015C (en) | 2008-03-21 | 2008-03-21 | The anode assembly of the used for electrolysis equipment of the method for recovery copper and aluminium and this method from the copper cladding aluminum conductor waste material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810019972A CN100585015C (en) | 2008-03-21 | 2008-03-21 | The anode assembly of the used for electrolysis equipment of the method for recovery copper and aluminium and this method from the copper cladding aluminum conductor waste material |
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| Publication Number | Publication Date |
|---|---|
| CN101240430A true CN101240430A (en) | 2008-08-13 |
| CN100585015C CN100585015C (en) | 2010-01-27 |
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ID=39932249
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|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634664A (en) * | 2012-03-30 | 2012-08-15 | 常州工学院 | Treatment method of copper clad aluminum lead wire wastes |
| CN113604841A (en) * | 2021-07-22 | 2021-11-05 | 田成 | Method for extracting and recovering valuable metal from waste liquid by non-inert anode plate |
| CN115638664A (en) * | 2022-12-26 | 2023-01-24 | 河南省远洋粉体科技股份有限公司 | Heat energy-saving system for aluminum-based alloy powder production |
-
2008
- 2008-03-21 CN CN200810019972A patent/CN100585015C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634664A (en) * | 2012-03-30 | 2012-08-15 | 常州工学院 | Treatment method of copper clad aluminum lead wire wastes |
| CN102634664B (en) * | 2012-03-30 | 2013-11-06 | 常州工学院 | Treatment method of copper clad aluminum lead wire wastes |
| CN113604841A (en) * | 2021-07-22 | 2021-11-05 | 田成 | Method for extracting and recovering valuable metal from waste liquid by non-inert anode plate |
| CN115638664A (en) * | 2022-12-26 | 2023-01-24 | 河南省远洋粉体科技股份有限公司 | Heat energy-saving system for aluminum-based alloy powder production |
| CN115638664B (en) * | 2022-12-26 | 2023-03-10 | 河南省远洋粉体科技股份有限公司 | Heat energy-saving system for aluminum-based alloy powder production |
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|---|---|
| CN100585015C (en) | 2010-01-27 |
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