CN102220602A - Method for extracting copper from waste liquid generated during copper foil production - Google Patents
Method for extracting copper from waste liquid generated during copper foil production Download PDFInfo
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- CN102220602A CN102220602A CN201110155361XA CN201110155361A CN102220602A CN 102220602 A CN102220602 A CN 102220602A CN 201110155361X A CN201110155361X A CN 201110155361XA CN 201110155361 A CN201110155361 A CN 201110155361A CN 102220602 A CN102220602 A CN 102220602A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The present invention discloses a method for extracting copper from a waste liquid generated during copper foil production, belonging to the technical field of metal extraction, and aims at providing a simple and high-efficiency method for extracting copper from the waste liquid generated during copper foil production. The technical essentials of the method comprises the following steps of: 1) collecting copper sulfate waste liquid generate during production process and injecting into an electrolytic cell; 2) adding gelatin 0.05-0.15 per mill of the copper sulfate waste liquid by weight; 3) placing anode and cathode boards and electrifying for electrolysis; and 4) stripping copper deposited on the cathode board after electrolysis. The method provided by the invention is used for recovering copper from the copper sulfate waste liquid.
Description
Technical field
The present invention relates to a kind of method of extracting copper, specifically, is a kind of method of extracting copper from the waste liquid of producing Copper Foil, belongs to the metal extraction techniques field.
Background technology
Electrolytic copper foil is the important base mateiral of electronics and information industry.This Copper Foil is that highly purified copper dissolution is made copper sulfate electrolyte, and in electrolysis special equipment, under galvanic effect, former paper tinsel is made in galvanic deposit with copper sulfate electrolyte; Then as requested to former paper tinsel carry out alligatoring, electrolytic copper foil is made in a series of surface treatments such as heat-resisting and anti-oxidation.
In former paper tinsel production and each step process of surface-treated, all water washing process to be arranged,,, contain Cu in the waste water so in whole process of production, produced a large amount of acid waste water to remove surperficial incidental electrolytic solution
2+And sulfuric acid.Cu
2+Concentration range is 0.1-5 grams per liters, and sulfuric acid concentration ranges is 2-15 grams per liters.Mainly handle waste water: earlier waste water is collected in the storage tank by pipeline,,, extracts the copper in the solution, and remaining waste water is discharged naturally by the method for galvanic deposit through after the simple concentration by simple extraction.But there are many drawbacks in this treatment process: 1, the copper of Ti Quing is impure too much, purity is low, can not be reused for the production of electrolytic copper foil, can only handle at a low price, causes cost allowance; 2, copper extraction facility investment is big, big energy-consuming, and complex process, operational difficulty also easily causes secondary pollution.
Summary of the invention
At the problems referred to above, the present invention discloses a kind of gelatin mass that adds in electrolyzer, and copper is separated out with simple substance electrolysis from waste liquid, carries out solid-liquid again and separates, and extracts the method for copper.
Technical scheme of the present invention is such: a kind of method of from the waste liquid of producing Copper Foil, extracting copper, and this method in turn includes the following steps: 1) bluestone waste that produces in the production process is collected the back and inject electrolyzer; 2) press bluestone waste weight 0.05 ‰～0.15 ‰ and add gelatin; 3) put into positive plate and negative plate energising electrolysis; 4) peel off the copper that is deposited on the negative plate after electrolysis is finished.
Further, in above-mentioned a kind of method of from the waste liquid of producing Copper Foil, extracting copper, step 2) be earlier gelatin to be dissolved in the deionized water, and then add in the bluestone waste.
In above-mentioned a kind of method of from the waste liquid of producing Copper Foil, extracting copper, during the step 3) electrolysis, also should per hour add the aqueous gelatin solution of 1 part of concentration 2ppm, to replenish the consumption of gelatin by 1000 parts of bluestone wastes.
In above-mentioned a kind of method of extracting copper from the waste liquid of producing Copper Foil, step 3) should be immersed in positive plate in the bluestone waste, to guarantee electrolytic efficiency.
Further, in above-mentioned a kind of method of from the waste liquid of producing Copper Foil, extracting copper, bluestone waste is kept in motion, can improves electrolytic efficiency like this, shorten electrolysis time.
Compared with prior art, the present invention has following advantage:
1, adopts electrolysis process from bluestone waste, to carry out copper acid and separate, in electrolyzer, after the single gelatin mass of adding copper is separated out with form electrolysis from waste liquid of simple substance or solids, carry out solid-liquid and separate, reach the effect of collecting solid copper;
2, employed facility investment is few, floor space is little, installation is easy, easy to operate;
3, the lean solution after the electrolysis, copper content＜80mg/L; Realize purpose and water environment treatment that copper material in the waste liquid is recycled fully, not only turn waste into wealth, reduced pollution, and economic benefit is high and be widely used;
4, copper recovery height, minimizing waste liquid discharge amount of exhaust gas help protecting environment.
Description of drawings
Fig. 1 is an equipment used synoptic diagram of the present invention.
Among the figure: rectifier cabinet 1, electrolyzer 2, conduction bridge formation 3, air inlet port 4, positive plate 5, negative pole conductive copper plate 6, valve 7.
Embodiment
Below in conjunction with specific embodiment the present invention is done further restriction in detail, but do not constitute any limitation of the invention.
Consult shown in Figure 1ly, be to realize that the present invention extracts a kind of simple and easy electrolyzer synoptic diagram of the method for copper from the waste liquid of producing Copper Foil, method of the present invention comprises successively:
1) bluestone waste that produces in the production process is collected the back and inject electrolyzer; Bluestone waste also comprises collects in the production process copper-bath that runs, emits, leaks, drips generation.
2) press bluestone waste weight 0.05 ‰～0.15 ‰ and add gelatin; Add the principle of gelatin: because gelatin is a kind of water-soluble material, it has good physical properties, can make the copper foil surface crystalline structure densification that is deposited on cathode surface, homogeneity, wetting ability etc.When copper is carried in electrolysis in bluestone waste, also make on the negative electrode sedimentary Copper Foil peel off out easily, so gelatin is that copper additives is carried in a kind of main electrolysis.The addition means of gelatin is earlier gelatin to be dissolved in the deionized water, and the dissolving ratio is about gelatin: deionized water is 1:10; And then add in the bluestone waste.
3) put into positive plate and negative plate energising electrolysis; Should be immersed in positive plate in the bluestone waste fully during electrolysis; And bluestone waste is kept in motion,, by pressurized air bluestone waste is produced and agitate as the blast inlet that distributes in the electrolyzer bottom in the accompanying drawing 1; Also should per hour add the aqueous gelatin solution of 1 part of concentration 2ppm by 1000 parts of bluestone wastes.
4) when the content of copper ion in the bluestone waste was lower than 80mg/L, electrolysis was finished; After finishing, electrolysis peels off the copper that is deposited on the negative plate.
Embodiment 1
Collect the bluestone waste that produces in the production process, comprise in the production process and run, emit, leak, drip the copper-bath that produces, inject electrolyzer 2, fill about 1000 liters of bluestone wastes in the electrolyzer of present embodiment, electrolyzer 2 should adopt have good thermotolerance, the PVC material of anti-toughness, anti-ductility makes, and makes positive plate 3 be immersed in the bluestone waste fully; Positive plate 3 should have the performance of anti-peracid, high temperature resistant, high electric current, can adopt the titanium anode material to make; The gelatin that adds 50g is as opening the cylinder amount; Open the blast tube valve 7 that install electrolyzer 2 belows, pressurized gas enters in the electrolyzer 2 by inlet pipe 4 with holes, and sulfur waste acid copper solutions is kept in motion; Close the then power supply of rectifier cabinet 1, rectifier cabinet 1 adopts the high power DC output of silicon controlled rectifier cabinet, computer program control, 3.5V, 70A/dm
2The direct-flow positive pole electric current by the conduction crane span structure 3 be transported to positive plate 5, the direct current cathodal current by the conduction crane span structure 3 be transported to negative electrode conductive copper plate 6; 3 employings of conduction crane span structure have good thermotolerance, make with corrosion resistant metal titanium material, per hour add the aqueous gelatin solution of 1 part of concentration 2ppm during electrolysis by 1000 parts of bluestone wastes, to compensate the gelatin that electrolysis is fallen; Carry in the copper process in electrolysis, the copper content in the solution reduces gradually, deposits negative pole copper material on the negative pole conductive copper plate 6 gradually; Start the acid mist scavenging tower during electrolysis, the acid mist scavenging tower adopts glass-reinforced plastic material to make the waste gas that produces in the purifying treatment electrolytic process; When the content of copper ion in the bluestone waste was lower than 80mg/L, electrolysis was finished; Powered-down is peeled off the copper that is deposited on the negative plate.
Substantially the same manner as Example 1, different is before electrolysis begins, and the gelatin that adds 150g is as opening the cylinder amount; Electrolysis effectiveness is basic identical.
Substantially the same manner as Example 1, different is before electrolysis begins, and the gelatin that adds 100g is as opening the cylinder amount; Electrolysis effectiveness is basic identical.
The contrast experiment observes
The bluestone waste electrolysis is carried copper when not adding gelatin, and sedimentary copper xln compactness is more loose on the negative electrode, and crystal grain comes off easily at bottom land, is difficult for peeling off at cathode carrier.
The bluestone waste electrolysis is carried copper after adding gelatin, sedimentary copper xln densification on the negative electrode, level and smooth, and the crystal grain difficult drop-off is peeled off out on cathode carrier at bottom land easily.
Bluestone waste electrolysis of the present invention carry the copper occupation area of equipment little, install easy, easy to operate; Lean solution after the electrolysis, copper content＜80mg/L.Realize purpose and water environment treatment that copper material in the waste liquid is recycled fully, not only turn waste into wealth, reduced pollution, and economic benefit is high and be widely used.
Claims (5)
1. a method of extracting copper from the waste liquid of producing Copper Foil is characterized in that, comprises the steps: 1 successively) bluestone waste that produces in the production process is collected back injection electrolyzer; 2) press bluestone waste weight 0.05 ‰～0.15 ‰ and add gelatin; 3) put into positive plate and negative plate energising electrolysis; 4) peel off the copper that is deposited on the negative plate after electrolysis is finished.
2. a kind of method of extracting copper from the waste liquid of producing Copper Foil according to claim 1 is characterized in that step 2) be earlier gelatin to be dissolved in the deionized water, and then add in the bluestone waste.
3. a kind of method of extracting copper from the waste liquid of producing Copper Foil according to claim 1 is characterized in that, during the step 3) electrolysis, per hour adds the aqueous gelatin solution of 1 part of concentration 2ppm by 1000 parts of bluestone wastes.
4. according to claim 1 or 3 described a kind of methods of from the waste liquid of producing Copper Foil, extracting copper, it is characterized in that step 3) should be immersed in positive plate in the bluestone waste.
5. a kind of method of extracting copper from the waste liquid of producing Copper Foil according to claim 1 is characterized in that, bluestone waste is kept in motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110155361XA CN102220602A (en) | 2011-06-10 | 2011-06-10 | Method for extracting copper from waste liquid generated during copper foil production |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110155361XA CN102220602A (en) | 2011-06-10 | 2011-06-10 | Method for extracting copper from waste liquid generated during copper foil production |
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| CN201110155361XA Pending CN102220602A (en) | 2011-06-10 | 2011-06-10 | Method for extracting copper from waste liquid generated during copper foil production |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534657A (en) * | 2012-02-17 | 2012-07-04 | 重庆重冶铜业有限公司 | Method for treating waste electrolyte in process of producing cathode copper |
| CN106207301A (en) * | 2016-08-11 | 2016-12-07 | 合肥国轩高科动力能源有限公司 | Method for electrolyzing and recycling negative electrode material and copper foil of waste lithium ion battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1831203A (en) * | 1999-12-28 | 2006-09-13 | 三井金属鉱业株式会社 | Electrolytic copper foil |
-
2011
- 2011-06-10 CN CN201110155361XA patent/CN102220602A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1831203A (en) * | 1999-12-28 | 2006-09-13 | 三井金属鉱业株式会社 | Electrolytic copper foil |
Non-Patent Citations (2)
| Title |
|---|
| 易光斌等: "电解铜箔添加剂配方优化", 《电镀与涂饰》 * |
| 黎德育等: "《电镀材料和设备手册》", 28 February 2007, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534657A (en) * | 2012-02-17 | 2012-07-04 | 重庆重冶铜业有限公司 | Method for treating waste electrolyte in process of producing cathode copper |
| CN106207301A (en) * | 2016-08-11 | 2016-12-07 | 合肥国轩高科动力能源有限公司 | Method for electrolyzing and recycling negative electrode material and copper foil of waste lithium ion battery |
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Application publication date: 20111019 |