CN102534657A - Method for treating waste electrolyte in process of producing cathode copper - Google Patents
Method for treating waste electrolyte in process of producing cathode copper Download PDFInfo
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- CN102534657A CN102534657A CN2012100358135A CN201210035813A CN102534657A CN 102534657 A CN102534657 A CN 102534657A CN 2012100358135 A CN2012100358135 A CN 2012100358135A CN 201210035813 A CN201210035813 A CN 201210035813A CN 102534657 A CN102534657 A CN 102534657A
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Abstract
The invention relates to a method for treating waste electrolyte in the process of producing cathode copper. The method comprises the following steps of: electrolyzing the waste electrolyte to produce electrolytic copper by using a lead plate as an anode and a pure copper sheet as a cathode, performing the next process on the residual electrolyte after the electrolytic copper is produced, and producing anode copper or copper sulfate by the conventional method, wherein direct current voltage is 3 to 3.2V and low current density is 120 to 150A/m<2> in the process of electrolyzing the waste electrolyte to produce the electrolytic copper, the residual electrolyte after the electrolytic copper is produced is subjected to the next process, and copper powder or the copper sulfate is produced by the conventional method. By the method for treating the waste electrolyte, the waste electrolyte which is produced in the process of producing the cathode copper and has high concentration of copper ions is efficiently utilized, and obvious economic benefits are achieved.
Description
Technical field
The present invention relates to the treatment process of the electrolysis waste solution of generation in the cathode copper production.
Background technology
In the cathode copper production process; Be to be that anode, fine copper sheet are negative electrode with the copper coin; Carry out along with reaction that various impurity constantly accumulate in the electrolytic solution; Impurity concentrations such as the nickel in the electrolytic solution, iron, arsenic, antimony constantly rise, and content of copper ion also constantly raises, nickel>=15g/L, iron>=3g/L, As>=3.5g/L, Sn>=0.5g/L, Cu in electrolytic solution
2+Be 65～70g/L; Particularly problems such as structure is not compact can appear in content of copper ion cathode copper too high, that utilize this electrolytic solution to produce; To face the risk that does not reach national standard (GB/T467-1997), simultaneously in process of production voltage with increasingly high, energy consumption is big.Therefore; Must remove impurity reduction content of copper ion by purifying electrolysis liquid; Electrolytic solution is remained at allow in the composition scope (content of copper ion can be produced the cathode copper that meets GB at 40～60g/L in the general electrolytic solution) thus the quality product of guaranteeing cathode copper is up to standard, so fresh qualified electrolytic solution is extracted, replenished to impurity, the too high above-mentioned electrolysis waste solution of copper ion concentration out in can cathode copper being produced.
To the processing of electrolysis waste solution in the above-mentioned cathode copper production, because the sulfuric acid concentration that contains in this electrolytic solution is about 180～200g/L, conventional process flow is electrolysis waste solution neutralization, production copper sulfate; In N-process, must add in a large number than in the fine copper material (cupric reach 99.5% and more than) with electrolysis waste solution in sulfuric acid; And then output copper sulfate, with fine copper material output copper sulfate, benefit is very low economically; But for reaching the purpose of handling waste electrolyte, this is must be through flow process.
Summary of the invention
The object of the invention is to provide the treatment process of the high cathode copper electrolysis waste solution of a kind of economic worth.
The present invention seeks to realize through following technical scheme:
The treatment process of electrolysis waste solution during a kind of cathode copper is produced; It is characterized in that: make anode, fine copper sheet with stereotype and make the said electrolysis waste solution of catholyte and produce electrolytic copper, adopt then and produce behind the electrolytic copper remaining electrolytic solution and get into next procedure and produce anode copper or copper sulfate by ordinary method.
Specifically, the treatment process of electrolysis waste solution during a kind of cathode copper is produced, with stereotype make anode, the fine copper sheet is made negative electrode, is under the situation of 3～3.2V at volts DS, adopts low current density 120A～150A/m
2The said electrolysis waste solution of electrolysis is produced electrolytic copper, and remaining electrolytic solution entering next procedure was produced copper powder or copper sulfate by ordinary method after electrolytic copper was produced in employing then.
Preferably, the aforesaid method unique distinction also is: in producing the electrolytic copper process, electrolytic solution is round-robin, contains high Cu
2+The above-mentioned electrolysis waste solution of concentration is constantly mended, and the low cupric ion electrolytic solution of producing behind the electrolytic copper of residue is regularly extracted out, remains in the electrolytic process solution copper ion concentration at 30～60 g/L.
More particularly, the treatment process of electrolysis waste solution during a kind of cathode copper is produced, with stereotype make anode, the fine copper sheet is made negative electrode, is under the situation of 3～3.2V at volts DS, adopts low current density 120A～150A/m
2Said electrolysis waste solution (the Cu of electrolysis
2+Content is 65～70g/L) production electrolytic coppers; (contained copper ion concentration drops to 20～25g/L) and extracts, constantly mends said electrolysis waste solution out remaining electrolytic solution after will producing electrolytic copper in the production process of said production electrolytic copper; Circulation is controlled the electrolytic process copper ion concentration at 30～60 g/L, and the gained electrolytic copper reaches national cathode copper standard (Cu-CATH-2) fully; Adopt to produce then behind the electrolytic copper remaining electrolytic solution get into next procedure by ordinary method produce copper sulfate or copper powder, said copper powder gets into thermal process again and returns further production anode copper.
The present invention has following beneficial effect:
The processing method of electrolysis waste solution during tough cathode of the present invention is produced; At first the electrolysis waste solution with high content of copper ion adopts the inventive method to produce electrolytic copper; The gained electrolytic copper reaches national tough cathode standard (Cu-CATH-2) fully, and the copper that can transform 55～60% in the electrolysis waste solution of high content of copper ion becomes the tough cathode that meets GB; The electrolyte of producing the low content of copper ion behind the cathode copper is produced copper sulphate or copper powder according to a conventional method, said copper powder gets into thermal process again and returns further production anode copper.The treatment process of electrolysis waste solution of the present invention than directly with the electrolysis waste solution of high content of copper ion adopt traditional technology output copper powder get into again thermal process return produce anode copper to put forward copper efficient high by 75%, and process cost descend; The treatment process of electrolysis waste solution of the present invention has reduced about about 75% than the direct cost that adopts traditional technology to produce copper sulfate the electrolysis waste solution of high content of copper ion.In a word, the electrolysis waste solution of the high copper ion concentration that is produced in the electrolysis waste solution treatment process anticathode copper of the present invention production has carried out efficient utilization, has realized remarkable economic efficiency.
Embodiment
Through instance the present invention is specifically described below.Be necessary to be pointed out that at this; Following instance only is used for the present invention is further specified; Can not be interpreted as the restriction to protection domain of the present invention, the person skilled in the art in this field can make some nonessential improvement and adjustment to the present invention according to the foregoing invention content.
Embodiment 1
The treatment process of electrolysis waste solution during a kind of cathode copper is produced, with stereotype make anode, the fine copper sheet is made negative electrode, is under the situation of 3.2V at volts DS, adopts low current density 120A/m
2Said electrolysis waste solution (the Cu of electrolysis
2+Content is 65～70g/L) production electrolytic coppers; (contained copper ion concentration drops to 20～25g/L) and extracts, constantly mends said electrolysis waste solution out remaining electrolytic solution after will producing electrolytic copper in the production process of said production electrolytic copper; Circulation is controlled the electrolytic process copper ion concentration at 45 g/L, and the gained electrolytic copper reaches national cathode copper standard (Cu-CATH-2) fully; Remaining electrolytic solution gets into next procedure by ordinary method production copper sulfate after adopting the production electrolytic copper then.The treatment process of this electrolysis waste solution has reduced about about 75% than the direct cost that adopts traditional technology to produce copper sulfate the electrolysis waste solution of high content of copper ion.
Embodiment 2
The treatment process of electrolysis waste solution during a kind of cathode copper is produced, with stereotype make anode, the fine copper sheet is made negative electrode, is under the situation of 3V at volts DS, adopts low current density 150A/m
2Said electrolysis waste solution (the Cu of electrolysis
2+Content is 65～70g/L) production electrolytic coppers; (contained copper ion concentration drops to 20～25g/L) and extracts, constantly mends said electrolysis waste solution out remaining electrolytic solution after will producing electrolytic copper in the production process of said production electrolytic copper; Circulation is controlled the electrolytic process copper ion concentration at 30g/L, and the gained electrolytic copper reaches national cathode copper standard (Cu-CATH-2) fully; Remaining electrolytic solution entering next procedure gets into thermal process again by ordinary method copper powder, said copper powder and returns further production anode copper behind the employing production electrolytic copper then; The treatment process of this electrolysis waste solution than directly with the electrolysis waste solution of high content of copper ion adopt traditional technology output copper powder get into again thermal process return produce anode copper to put forward copper efficient high by 75%, and process cost descend.
Embodiment 3
The treatment process of electrolysis waste solution during a kind of cathode copper is produced, with stereotype make anode, the fine copper sheet is made negative electrode, is under the situation of 3V at volts DS, adopts low current density 130A/m
2Said electrolysis waste solution (the Cu of electrolysis
2+Content is 65～70g/L) production electrolytic coppers; (contained copper ion concentration drops to 20～25g/L) and extracts, constantly mends said electrolysis waste solution out remaining electrolytic solution after will producing electrolytic copper in the production process of said production electrolytic copper; Circulation is controlled the electrolytic process copper ion concentration at 60g/L, and the gained electrolytic copper reaches national cathode copper standard (Cu-CATH-2) fully; Adopt to produce then behind the electrolytic copper remaining electrolytic solution get into next procedure by ordinary method produce copper powder, said copper powder gets into thermal process again and returns further production anode copper; The treatment process of this electrolysis waste solution than directly with the electrolysis waste solution of high content of copper ion adopt traditional technology output copper powder get into again thermal process return produce anode copper to put forward copper efficient high by 75%, and process cost descend.
Claims (4)
1. the treatment process of electrolysis waste solution during a cathode copper is produced; It is characterized in that: make anode, fine copper sheet with stereotype and make the said electrolysis waste solution of catholyte and produce electrolytic copper, adopt then and produce behind the electrolytic copper remaining electrolytic solution and get into next procedure and produce anode copper or copper sulfate by ordinary method.
2. treatment process as claimed in claim 1 is characterized in that: it is to be under the situation of 3～3.2V at volts DS that the said electrolysis waste solution of electrolysis is produced the electrolytic copper process, and the employing low current density is 120A～150A/m
2, remaining electrolytic solution got into next procedure by ordinary method production copper powder or copper sulfate after electrolytic copper was produced in employing then.
3. treatment process as claimed in claim 2 is characterized in that: in producing the electrolytic copper process, electrolytic solution is round-robin, contains high Cu
2+The above-mentioned electrolysis waste solution of concentration is constantly mended, and the low cupric ion electrolytic solution of producing behind the electrolytic copper of residue is regularly extracted out, remains in the electrolytic process solution copper ion concentration at 30～60 g/L.
4. treatment process as claimed in claim 1 is characterized in that: it is to be under the situation of 3～3.2V at volts DS that the said electrolysis waste solution of electrolysis is produced the electrolytic copper process, and current density is 120A～150A/m
2, the residue electrolytic solution that will produce in the said production electrolytic copper process behind the electrolytic copper is extracted out, is constantly mended said electrolysis waste solution, and circulation is controlled the electrolytic process copper ion concentration at 30～60 g/L; To produce then behind the electrolytic copper remaining electrolytic solution send into next procedure by ordinary method produce copper sulfate or copper powder, said copper powder gets into thermal process again and returns further production anode copper.
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| CN2012100358135A CN102534657A (en) | 2012-02-17 | 2012-02-17 | Method for treating waste electrolyte in process of producing cathode copper |
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| CN2012100358135A CN102534657A (en) | 2012-02-17 | 2012-02-17 | Method for treating waste electrolyte in process of producing cathode copper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866352A (en) * | 2012-12-17 | 2014-06-18 | 重庆华浩冶炼有限公司 | Producing method of electrolytic copper powder |
| CN104263937A (en) * | 2014-09-04 | 2015-01-07 | 龙济时代(北京)新能源科技有限公司 | Treatment method for nickel, copper and tin alloy waste material |
| CN109252189A (en) * | 2018-10-30 | 2019-01-22 | 金川集团股份有限公司 | A kind of method that high purity copper is extracted in waste solution of copper electrolysis purification |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866352A (en) * | 2012-12-17 | 2014-06-18 | 重庆华浩冶炼有限公司 | Producing method of electrolytic copper powder |
| CN104263937A (en) * | 2014-09-04 | 2015-01-07 | 龙济时代(北京)新能源科技有限公司 | Treatment method for nickel, copper and tin alloy waste material |
| CN109252189A (en) * | 2018-10-30 | 2019-01-22 | 金川集团股份有限公司 | A kind of method that high purity copper is extracted in waste solution of copper electrolysis purification |
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Application publication date: 20120704 |