CN110724977A - Electrolytic copper waste liquid regeneration and reuse treatment system - Google Patents
Electrolytic copper waste liquid regeneration and reuse treatment system Download PDFInfo
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- CN110724977A CN110724977A CN201911070106.8A CN201911070106A CN110724977A CN 110724977 A CN110724977 A CN 110724977A CN 201911070106 A CN201911070106 A CN 201911070106A CN 110724977 A CN110724977 A CN 110724977A
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- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
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- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
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- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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Abstract
The invention provides an electrolytic copper waste liquid regeneration and reuse treatment system, which comprises a waste liquid primary reuse regeneration system mainly used for recycling copper ions, a waste liquid secondary reuse regeneration system mainly used for recycling nickel ions and iron ions and a waste liquid tertiary reuse regeneration system used for realizing recycling of regenerated electrolyte; the invention adopts a unique and advanced multi-stage waste liquid treatment system, and the regenerated and recovered electrolyte can be circulated to the electrolytic cell for continuous use, thereby not only saving the cost for enterprises, but also realizing the zero discharge of three wastes and fundamentally solving the problem of environmental pollution.
Description
Technical Field
The invention relates to the field of waste liquid treatment, in particular to a system for regenerating and recycling electrolytic copper waste liquid.
Background
In the production of electrolytic copper, a large amount of waste electrolyte is generated in the production process, and the electrolyte mainly contains sulfuric acid, various metal ions and a small amount of organic matters. At present, the treatment of waste electrolyte mainly adopts an acid-base neutralization method, but a large amount of solid waste is generated, and the later environmental protection treatment cost is very high.
On the other hand, the environmental management department in China is taking relevant precautionary measures to strengthen the environmental management and strive not to generate or generate little pollution and damage to the environment. How to improve the treatment capacity of the electrolytic copper waste liquid, realize the reduction of the discharge of three wastes and even zero discharge, and fundamentally solve the problem that the environmental pollution caused by the electrolytic copper waste liquid is the main problem which is urgently needed to be solved in the current electrolytic copper production.
Disclosure of Invention
The invention provides a system for regenerating and recycling electrolytic copper waste liquid, which solves the problems of environmental pollution, great increase of production cost and the like caused by unreasonable waste liquid treatment link in electrolytic copper production.
In order to achieve the purpose, the invention provides an electrolytic copper waste liquid regeneration and reuse treatment system, which comprises a waste liquid primary reuse regeneration system mainly used for reusing copper ions, a waste liquid secondary reuse regeneration system mainly used for reusing nickel ions and iron ions and a waste liquid tertiary reuse regeneration system used for realizing recycling of regenerated electrolyte; the electrolytic copper waste liquid regeneration and reuse treatment system is connected with the electrolytic copper production line, so that the electrolytic copper waste liquid is recycled.
The primary waste liquid recycling and regenerating system comprises a copper removing groove for carrying out copper removing treatment on a waste liquid stock solution; and after the copper removal treatment, recovering copper ions in the waste liquid stock solution and generating a primary waste liquid to a primary waste liquid pool.
The waste liquid secondary recycling regeneration system is used for evaporating the primary waste liquid through an evaporating tank and filtering the primary waste liquid through a filter, and a centrifugal machine is used for obtaining sulfate crystals so as to recover and utilize nickel ions and iron ions; meanwhile, partial water in the electrolyte is evaporated, so that the waste electrolyte is subjected to reduction treatment; and intercepting organic matter macromolecules in the waste liquid of the waste electrolyte after the reduction treatment by adopting an acid-resistant ultrafiltration system through a tertiary filter, so that the waste electrolyte achieves further purification treatment, and secondary waste liquid is obtained.
The three-stage waste liquid recycling and regenerating system comprises a primary acid purifying tank and a recycling tank for recycling acidity of the secondary waste liquid, the acid concentration of the secondary waste liquid is controlled within 500g/L, then acid in the waste liquid is separated from metal ion residual liquid through an anion membrane separation system according to a diffusion dialysis principle, and the separated acid liquid is conveyed to a regenerated acid tank, so that recycling and regeneration of the electrolyte waste liquid are realized.
Preferably, the evaporation tank is connected with a waste gas purification tower, and is subjected to neutralization treatment and then is emptied after reaching the standard.
Preferably, the electrolytic copper waste liquid regeneration and reuse treatment system adopts full-automatic program control.
Preferably, the organic macromolecules can be recycled to the primary waste liquid pool for treatment.
Preferably, the metal ion residual liquid can be recycled to the primary waste liquid pool and the callback tank for further treatment.
Has the advantages that:
(1) the invention adopts a unique and advanced multi-stage waste liquid treatment system, and the regenerated and recovered electrolyte can be circulated to the electrolytic cell for continuous use, thereby not only saving the cost for enterprises, but also realizing the zero discharge of three wastes and fundamentally solving the problem of environmental pollution;
(2) the electrolyte index after treatment is as follows: 1) acid recovery rate: more than or equal to 80 percent; 2) metal ion rejection: more than or equal to 90 percent of the total amount of the lead-free acid, except arsenic and bismuth (because arsenic and bismuth can form coordination ions in a sulfuric acid solution, the retention rate can be reduced, generally, the retention rate of arsenic is more than or equal to 40 percent, and the retention rate of bismuth is more than or equal to 50 percent); the content of organic matters and metal impurity ions is lower than the specified lower limit value of the electrolytic copper solution, so that the condition of electrolytic copper is met, the electrolytic copper can be recycled, and the production cost is greatly saved;
(3) the invention adopts full-automatic program control, reduces the labor intensity of operators and reduces the system operation cost.
Drawings
FIG. 1 is a schematic flow chart of the present invention;
reference numerals: none.
Detailed Description
Reference will now be made in detail to the various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention is described in conjunction with the exemplary embodiments, it will be understood that they are not intended to limit the invention to these exemplary embodiments. On the contrary, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.
The invention provides an electrolytic copper waste liquid regeneration and reuse treatment system, which comprises a waste liquid primary reuse regeneration system mainly used for recycling copper ions, a waste liquid secondary reuse regeneration system mainly used for recycling nickel ions and iron ions and a waste liquid tertiary reuse regeneration system used for realizing recycling of regenerated electrolyte; the electrolytic copper waste liquid regeneration and reuse treatment system is connected with the electrolytic copper production line to achieve the purpose of recycling the electrolytic copper waste liquid; wherein the content of the first and second substances,
the waste liquid primary recycling and regenerating system comprises a copper removing groove for carrying out copper removing treatment on a waste liquid stock solution; after the copper removal treatment, recovering copper ions in the stock solution of the waste liquid and generating a primary waste liquid to a primary waste liquid pool;
the waste liquid secondary recycling regeneration system is used for evaporating the primary waste liquid through an evaporating tank and filtering the primary waste liquid through a filter, and a centrifugal machine is used for obtaining sulfate crystals so as to recover and utilize nickel ions and iron ions; meanwhile, partial water in the electrolyte is evaporated, so that the waste electrolyte is subjected to reduction treatment; intercepting organic matter macromolecules in the waste liquid of the waste electrolyte after the reduction treatment by using an acid-resistant ultrafiltration system through a three-stage filter, so that the waste electrolyte is further purified to obtain a second-stage waste liquid;
the three-stage waste liquid recycling and regenerating system comprises a primary acid purifying tank and a recycling tank for recycling acidity of the secondary waste liquid, the acid concentration of the secondary waste liquid is controlled within 500g/L, then acid in the waste liquid is separated from metal ion residual liquid through an anion membrane separation system according to a diffusion dialysis principle, and the separated acid liquid is conveyed to a regenerated acid tank, so that recycling and regeneration of the electrolyte waste liquid are realized.
Further, in the embodiment, the evaporation tank is connected with a waste gas purification tower, and is subjected to neutralization treatment and then is emptied after reaching the standard.
Further, the system for regenerating and recycling the electrolytic copper waste liquid in the embodiment adopts full-automatic program control.
Further, in this embodiment, the organic macromolecules can be recycled to the first waste liquid pool for treatment.
Further, in this embodiment, the metal ion raffinate can be recycled to the primary waste liquid pool and the recycle-back tank for further processing.
Specifically, the concentration of impurity ions such as nickel and iron in the electrolytic copper workshop is higher and higher along with the time, which greatly affects the electrolytic copper production, so that the electrolyte must be regenerated every 50-60 days. Firstly, the raw liquid of the waste liquid is subjected to copper removal treatment through a copper removal groove, so that copper ions are recycled, and meanwhile, primary waste liquid is generated; evaporating the primary waste liquid by an evaporating tank and filtering by a filter, and further selling or carrying out secondary processing on sulfate crystals obtained by a centrifugal machine to recover and utilize nickel ions and iron ions; meanwhile, partial water in the electrolyte is evaporated, so that the waste electrolyte is subjected to reduction treatment; intercepting organic matter macromolecules in the waste liquid of the waste electrolyte after the reduction treatment by adopting an acid-resistant ultrafiltration system through a three-stage filter, so that the waste electrolyte is further purified to obtain a second-stage waste liquid, and the intercepted organic matter macromolecules are recycled to the first-stage waste liquid for further recycling treatment; and then the acid concentration of the secondary waste liquid is regulated back to be within 500g/L through the primary acid purification tank and the regulation back tank, the working condition of the next anion membrane separation system is met, and according to the diffusion dialysis principle, the anion membrane separation system separates the acid in the waste liquid to a regenerated acid tank, so that the recycling and regeneration of the electrolyte waste liquid are realized.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides an electrolytic copper waste liquid regeneration and retrieval and utilization processing system which characterized in that: the system comprises a primary waste liquid recycling and regenerating system mainly used for recycling copper ions, a secondary waste liquid recycling and regenerating system mainly used for recycling nickel ions and iron ions, and a tertiary waste liquid recycling and regenerating system used for recycling and regenerating electrolyte; the electrolytic copper waste liquid regeneration and reuse treatment system is connected with the electrolytic copper production line to achieve the purpose of recycling the electrolytic copper waste liquid; wherein the content of the first and second substances,
the waste liquid primary recycling and regenerating system comprises a copper removing groove for carrying out copper removing treatment on a waste liquid stock solution; after the copper removal treatment, recovering copper ions in the stock solution of the waste liquid and generating a primary waste liquid to a primary waste liquid pool;
the waste liquid secondary recycling regeneration system is used for evaporating the primary waste liquid through an evaporating tank and filtering the primary waste liquid through a filter, and a centrifugal machine is used for obtaining sulfate crystals so as to recover and utilize nickel ions and iron ions; meanwhile, partial water in the electrolyte is evaporated, so that the waste electrolyte is subjected to reduction treatment; intercepting organic matter macromolecules in the waste liquid of the waste electrolyte after the reduction treatment by using an acid-resistant ultrafiltration system through a three-stage filter, so that the waste electrolyte is further purified to obtain a second-stage waste liquid;
the three-stage waste liquid recycling and regenerating system comprises a primary acid purifying tank and a recycling tank for recycling acidity of the secondary waste liquid, the acid concentration of the secondary waste liquid is controlled within 500g/L, then acid in the waste liquid is separated from metal ion residual liquid through an anion membrane separation system according to a diffusion dialysis principle, and the separated acid liquid is conveyed to a regenerated acid tank, so that recycling and regeneration of the electrolyte waste liquid are realized.
2. The electrolytic copper waste liquid regeneration and reuse treatment system according to claim 1, characterized in that: the evaporating pot is connected with a waste gas purification tower and is emptied after reaching the standard after neutralization treatment.
3. The electrolytic copper waste liquid regeneration and reuse treatment system according to claim 1, characterized in that: the electrolytic copper waste liquid regeneration and reuse treatment system adopts full-automatic program control.
4. The electrolytic copper waste liquid regeneration and reuse treatment system according to claim 1, characterized in that: the organic macromolecules can be recycled to the first-level waste liquid pool for treatment.
5. The electrolytic copper waste liquid regeneration and reuse treatment system according to claim 1, characterized in that: and the metal ion residual liquid can be recycled to the primary waste liquid pool and the callback tank for further treatment.
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| CN201911070106.8A CN110724977A (en) | 2019-11-05 | 2019-11-05 | Electrolytic copper waste liquid regeneration and reuse treatment system |
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| CN201911070106.8A CN110724977A (en) | 2019-11-05 | 2019-11-05 | Electrolytic copper waste liquid regeneration and reuse treatment system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725888A (en) * | 2013-12-13 | 2014-04-16 | 金川集团股份有限公司 | Method for extracting nickel from copper electrolysis effluent |
| JP5482461B2 (en) * | 2010-05-31 | 2014-05-07 | 住友金属鉱山株式会社 | Method for recovering copper from copper electrolysis waste liquid |
| CN104894607A (en) * | 2015-05-22 | 2015-09-09 | 铜陵有色设计研究院 | Method for purifying waste copper sulfate electrolyte |
| CN206915957U (en) * | 2017-06-29 | 2018-01-23 | 铜陵云翔金属废料再生科技有限公司 | Liquid waste treatment system in cupric electrolysis production |
| CN109957815A (en) * | 2017-12-22 | 2019-07-02 | 中国瑞林工程技术有限公司 | The purification method of copper electrolyte |
-
2019
- 2019-11-05 CN CN201911070106.8A patent/CN110724977A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5482461B2 (en) * | 2010-05-31 | 2014-05-07 | 住友金属鉱山株式会社 | Method for recovering copper from copper electrolysis waste liquid |
| CN103725888A (en) * | 2013-12-13 | 2014-04-16 | 金川集团股份有限公司 | Method for extracting nickel from copper electrolysis effluent |
| CN104894607A (en) * | 2015-05-22 | 2015-09-09 | 铜陵有色设计研究院 | Method for purifying waste copper sulfate electrolyte |
| CN206915957U (en) * | 2017-06-29 | 2018-01-23 | 铜陵云翔金属废料再生科技有限公司 | Liquid waste treatment system in cupric electrolysis production |
| CN109957815A (en) * | 2017-12-22 | 2019-07-02 | 中国瑞林工程技术有限公司 | The purification method of copper electrolyte |
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