CN103667713A - Method for recycling copper from coppered steel wires - Google Patents
Method for recycling copper from coppered steel wires Download PDFInfo
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- CN103667713A CN103667713A CN201310681970.8A CN201310681970A CN103667713A CN 103667713 A CN103667713 A CN 103667713A CN 201310681970 A CN201310681970 A CN 201310681970A CN 103667713 A CN103667713 A CN 103667713A
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Abstract
The invention discloses a method for recycling copper from coppered steel wires. The method comprises the following steps: a mixed solution of ammonia water and ammonium sulfate is used as a leaching agent, air used as an oxidizing agent is led in, and copper in the coppered steel wires is leached out selectively, so that a leaching agent containing copper is obtained; the obtained leaching agent adopts P507 as an extraction agent, and reverse extraction is performed on the obtained leaching agent by using a dilute sulphuric acid solution, so that a copper sulfate solution with high concentration is obtained; then evaporative crystallization is performed, so that a copper sulfate pentahydrate product is obtained. According the invention, in the extraction process, raffinate used as the mixed solution of the ammonia water and the ammonium sulfate can return to the leaching process of the copper coated iron wires; in the process of evaporative crystallization of copper sulfate, crystallization mother liquor used as a back washing agent returns to solvent extraction process. Therefore, closed cycle in the whole technological process is achieved, waste water pollution, waste gas pollution waste residue pollution are avoided, in addition, the method has the characteristics of low cost and simple processes, thereby being easy to achieve industrialization.
Description
Technical field
The invention belongs to metal extraction techniques field, relate in particular to a kind of method that reclaims copper from copper plated steel.
Background technology
Coppered Steel Wire is to adopt the method for electroless plating to plate layer of metal copper on the surface of steel wire, thereby there is the toughness of steel wire and superior conductivity and the high frequency performance of copper simultaneously, being mainly used in communication and electron trade, is the regeneration product of order wire, cable proprietary material.Coppered Steel Wire in use, thereby the copper on surface easily oxidation have a strong impact on its use properties.Therefore, the every annual meeting of China produces a large amount of waste and old Coppered Steel Wire.In copper coated iron wire, the content of copper higher (being about 6%), has larger economic worth.
At present, the document that reclaims copper from Coppered Steel Wire yet there are no report, but has people to apply for reclaiming the patent of copper from copper facing tin iron pin.In view of, Coppered Steel Wire exists form comparatively similar with copper in copper facing tin iron pin, now the technical characterstic of this patent has been carried out to concise and to the point analysis.This technique is the copper in Oxidation Leaching copper facing tin iron pin in ammonia solution, obtains the ammonia leach liquor of cupric.Then the ammonia solution Direct Electrolysis of cupric is obtained to metallic copper.This technology electrolytic copper in ammonia solution, current efficiency is not high, and production cost is higher, and the cathode copper quality product obtaining is not high.
Summary of the invention
The object of the present invention is to provide a kind of method that reclaims copper from copper plated steel, be intended to solve the method for also not extracting at present copper from copper plated steel, the existing method electrolytic copper in ammonia solution that reclaims copper from copper facing tin iron pin, current efficiency is not high, production cost is higher, and the not high problem of cathode copper quality product obtaining.
The present invention is achieved in that a kind of method that reclaims copper from copper plated steel comprises the steps:
Step 1, adopt the mixing solutions of ammoniacal liquor and ammonium sulfate as leaching agent, and pass into air as oxygenant, optionally leach the copper in Coppered Steel Wire, obtain the leach liquor of cupric.
The leach liquor obtaining in step 2, step 1 adopts P507 as extraction agent, and uses dilution heat of sulfuric acid back extraction, obtains the copper-bath of high density.
Step 3, evaporative crystallization, obtain cupric sulfate pentahydrate product.
Further, in extraction process, raffinate is the mixed solution of ammoniacal liquor and ammonium sulfate, can be back to the leaching process of copper coated iron wire.
Further, in evaporative crystallization copper sulfate process, crystalline mother solution can be used as reverse-extraction agent and is back to solvent extraction step.
Further, in leaching process, ammonia concn is 2mol/L,, ammonium sulfate concentrations is that 1mol/L, liquid-solid ratio are that 5:1, extraction time are 2 hours, room temperature, air flow quantity is depending on inventory, copper leaching rate can arrive 99%.
Further, in solvent extraction process, extraction agent P507 concentration is 40%, compare that O/A is 1/2, extraction time 5 minutes, reverse-extraction agent sulfuric acid concentration are that 2mol/L, back extraction compare that O/A is 3/1, room temperature, and percentage extraction and the back extraction ratio of copper are 99%.
Further, in evaporation and crystal process, the percent crystallization in massecuite of controlling copper is 85% left and right, obtains qualified copper sulfate product.
In extraction process of the present invention, raffinate is the mixed solution of ammoniacal liquor and ammonium sulfate, can be back to the leaching process of copper coated iron wire; In evaporative crystallization copper sulfate process, crystalline mother solution can be used as reverse-extraction agent and is back to solvent extraction step; Therefore, whole technical process can realize closed cycle, has avoided " the three wastes " pollution.In addition, this technique also has that production cost is lower, the simple feature of flow process, is easy to realize industrialization.
Accompanying drawing explanation
Fig. 1 is a kind of schema that reclaims the method for copper from copper plated steel that the embodiment of the present invention provides;
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 shows a kind of flow process that reclaims the method for copper from copper plated steel of the present invention, and as shown in the figure, the present invention is achieved in that a kind of method that reclaims copper from copper plated steel comprises the steps:
S101: adopt the mixing solutions of ammoniacal liquor and ammonium sulfate as leaching agent, and pass into air as oxygenant, optionally leach the copper in Coppered Steel Wire, obtain the leach liquor of cupric.
S102: the leach liquor obtaining in step 1 adopts P507 as extraction agent, and uses dilution heat of sulfuric acid back extraction, obtains the copper-bath of high density.
S103: evaporative crystallization, obtains cupric sulfate pentahydrate product.
Further, in extraction process, raffinate is the mixed solution of ammoniacal liquor and ammonium sulfate, can be back to the leaching process of copper coated iron wire.
Further, in evaporative crystallization copper sulfate process, crystalline mother solution can be used as reverse-extraction agent and is back to solvent extraction step.
Further, in leaching process, ammonia concn is 2mol/L,, ammonium sulfate concentrations is that 1mol/L, liquid-solid ratio are that 5:1, extraction time are 2 hours, room temperature, air flow quantity is depending on inventory, copper leaching rate can arrive 99%.
Further, in solvent extraction process, extraction agent P507 concentration is 40%, compare that O/A is 1/2, extraction time 5 minutes, reverse-extraction agent sulfuric acid concentration are that 2mol/L, back extraction compare that O/A is 3/1, room temperature, and percentage extraction and the back extraction ratio of copper are 99%.
Further, in evaporation and crystal process, the percent crystallization in massecuite of controlling copper is 85% left and right, obtains qualified copper sulfate product.
In extraction process of the present invention, raffinate is the mixed solution of ammoniacal liquor and ammonium sulfate, can be back to the leaching process of copper coated iron wire; In evaporative crystallization copper sulfate process, crystalline mother solution can be used as reverse-extraction agent and is back to solvent extraction step; Therefore, whole technical process can realize closed cycle, has avoided " the three wastes " pollution.In addition, this technique also has that production cost is lower, the simple feature of flow process, is easy to realize industrialization.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that performing creative labour can make or distortion still within protection scope of the present invention.
Claims (6)
1. from Coppered Steel Wire, reclaim a method for copper, it is characterized in that, the described method that reclaims copper from Coppered Steel Wire comprises the steps:
Step 1, adopt the mixing solutions of ammoniacal liquor and ammonium sulfate as leaching agent, and pass into air as oxygenant, optionally leach the copper in Coppered Steel Wire, obtain the leach liquor of cupric;
The leach liquor obtaining in step 2, step 1 adopts P507 as extraction agent, and uses dilution heat of sulfuric acid back extraction, obtains the copper-bath of high density;
Step 3, evaporative crystallization, obtain cupric sulfate pentahydrate product.
2. the method that reclaims copper from Coppered Steel Wire as claimed in claim 1, is characterized in that, in extraction process, raffinate is the mixed solution of ammoniacal liquor and ammonium sulfate, can be back to the leaching process of copper coated iron wire.
3. the method that reclaims copper from Coppered Steel Wire as claimed in claim 1, is characterized in that, in evaporative crystallization copper sulfate process, crystalline mother solution can be used as reverse-extraction agent and is back to solvent extraction step.
4. the method that reclaims copper from Coppered Steel Wire as claimed in claim 1, is characterized in that, in leaching process, ammonia concn is that 2mol/L, ammonium sulfate concentrations are that 1mol/L, liquid-solid ratio are that 5:1, extraction time are 2 hours, and copper leaching rate can arrive 99%.
5. the method that reclaims copper from Coppered Steel Wire as claimed in claim 1, it is characterized in that, in solvent extraction process, extraction agent P507 concentration is 40%, compare that O/A is 1/2, extraction time 5 minutes, reverse-extraction agent sulfuric acid concentration are that 2mol/L, back extraction compare that O/A is 3/1, room temperature, and percentage extraction and the back extraction ratio of copper are 99%.
6. the method that reclaims copper from Coppered Steel Wire as claimed in claim 1, is characterized in that, in evaporation and crystal process, the percent crystallization in massecuite of controlling copper is 85%, obtains qualified copper sulfate product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310681970.8A CN103667713B (en) | 2013-12-12 | 2013-12-12 | A kind of method reclaiming copper from Coppered Steel Wire |
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| CN201310681970.8A CN103667713B (en) | 2013-12-12 | 2013-12-12 | A kind of method reclaiming copper from Coppered Steel Wire |
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| CN103667713A true CN103667713A (en) | 2014-03-26 |
| CN103667713B CN103667713B (en) | 2016-02-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861837A (en) * | 2015-01-23 | 2016-08-17 | 重庆宇立金属制品有限公司 | Comprehensive recycling method of nickel-iron matrix tinned copperized electronic waste |
| CN106399698A (en) * | 2016-10-27 | 2017-02-15 | 北京科技大学 | Method for recovering copper and aluminum from copper clad aluminum bar processing waste |
| CN108570560A (en) * | 2018-06-11 | 2018-09-25 | 李天麟 | A method of recycling copper from copper-bearing waste material |
Citations (4)
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| GB1411009A (en) * | 1973-05-14 | 1975-10-22 | Imi Refinery Holdings Ltd | Recovery of scrap metals |
| US4022866A (en) * | 1972-03-07 | 1977-05-10 | The Anaconda Company | Recovery of metals |
| SU908891A1 (en) * | 1980-06-16 | 1982-02-28 | Всесоюзный Научно-Исследовательский И Проектный Институт Вторичных Цветных Металлов | Method for extracting copper from wastes |
| CN101289707A (en) * | 2007-04-16 | 2008-10-22 | 东莞市广华化工有限公司 | Copper recovery form etching waste liquid of circuit board |
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2013
- 2013-12-12 CN CN201310681970.8A patent/CN103667713B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022866A (en) * | 1972-03-07 | 1977-05-10 | The Anaconda Company | Recovery of metals |
| GB1411009A (en) * | 1973-05-14 | 1975-10-22 | Imi Refinery Holdings Ltd | Recovery of scrap metals |
| SU908891A1 (en) * | 1980-06-16 | 1982-02-28 | Всесоюзный Научно-Исследовательский И Проектный Институт Вторичных Цветных Металлов | Method for extracting copper from wastes |
| CN101289707A (en) * | 2007-04-16 | 2008-10-22 | 东莞市广华化工有限公司 | Copper recovery form etching waste liquid of circuit board |
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| 王成彦: "氨性溶液中铜镍钴的萃取分离", 《有色金属》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861837A (en) * | 2015-01-23 | 2016-08-17 | 重庆宇立金属制品有限公司 | Comprehensive recycling method of nickel-iron matrix tinned copperized electronic waste |
| CN106399698A (en) * | 2016-10-27 | 2017-02-15 | 北京科技大学 | Method for recovering copper and aluminum from copper clad aluminum bar processing waste |
| CN108570560A (en) * | 2018-06-11 | 2018-09-25 | 李天麟 | A method of recycling copper from copper-bearing waste material |
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| CN103667713B (en) | 2016-02-24 |
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Effective date of registration: 20210325 Address after: 214000 plot 60-1, zone B, Wuxi National High tech Industrial Development Zone, Wuxi City, Jiangsu Province Patentee after: CENTILLION RESOURCE REGENERATION (WUXI) Co.,Ltd. Address before: 341000 No. 86 Hongqi Avenue, Jiangxi, Ganzhou Patentee before: Jiangxi University of Science and Technology |
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