CN102268692B - Method for producing cathode copper by directly electrolyzing spongy copper - Google Patents
Method for producing cathode copper by directly electrolyzing spongy copper Download PDFInfo
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- CN102268692B CN102268692B CN201110164103.8A CN201110164103A CN102268692B CN 102268692 B CN102268692 B CN 102268692B CN 201110164103 A CN201110164103 A CN 201110164103A CN 102268692 B CN102268692 B CN 102268692B
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Abstract
The invention relates to a method for producing cathode copper by directly electrolyzing spongy copper. The method is characterized in that electrolyte comprises the following components in content: 35-50 g/L of Cu<2+> and 160-180g/L of acid; additives comprise 50-80 g/t of bone glue, 50-70 g/t of thiocarbamide, 30-70 g/t of casein and 200-400 ml/t of hydrochloric acid; the temperature of the electrolyte is 60-68 DEG C; a red copper bar is used as an anode conductive bar; the spongy copper is packaged with a diaphragm bag and then mounted in an anode frame; the anode conductive bar is inserted in the anode frame and made into an anode; and a thin copper sheet is made into a cathode. Due to the adoption of a hydrometallurgical technology in the invention, the process flow of extracting copper from abandoned copper oxide ores and waste copper-containing solutions is shortened, the production cost is low and the metal recovery rate can be up to more than 98%; the production liquid is circulated in a closed loop, so that the quantity of waste water is low, the energy consumption is reduced and the pollution to the environment is eliminated; the master grade of the cathode copper is high and is up to 99.96%, and the current efficiency is higher than 97%.
Description
Technical field
The invention belongs to non-ferrous metal comprehensive reutilization field, relate in particular to a kind of method of copper sponge Direct Electrolysis production cathode copper.
Background technology
Refractory copper oxide ore, discarded copper oxide ore or contained waste liquid etc. all contain a certain amount of copper, and due to complicated component, extraction process difficulty is large, is mostly adopted the method for diluted acid leaching, iron powder replacement, reclaims copper wherein, is produced into copper sponge.Copper sponge is spongiform copper powder, and main component is copper, water, also contains the impurity such as iron, zinc, and cupric is generally in 40-80% left and right.One of method that tradition is extracted copper from copper sponge is: (Li Chande " produces copper sulfate with copper sponge "-" China YouSe metallurgy " to produce copper sulfate with copper sponge, 1990,4), this method is just converted into copper sulfate Chemicals by copper sponge, and use range is little; Another kind method is: copper sponge blast furnace smelting (Gong Guoshui " blast furnace smelting technology of copper sponge "-" Jiangxi Metallurgical ", 1992,4), and this method adopts pyrometallurgical smelting, and energy consumption is high, production cost is high, environmental pollution is serious.Copper sponge is utilized to the technology of electrolytic process direct production cathode copper, be intended to copper sponge to be made into anode copper, by electrolysis direct production cathode copper, also there is no at present this precedent both at home and abroad.
Summary of the invention
A kind of avoid the deficiencies in the prior art to provide copper sponge Direct Electrolysis to produce cathode copper method is provided, and the method has the non-ferrous metal of raising level of comprehensive utilization, reduces production costs, reduces energy consumption, eliminates the features such as environmental pollution.
For achieving the above object, the technical scheme that the present invention takes is: a kind of copper sponge Direct Electrolysis is produced the method for cathode copper, it is characterized in that:
Electrolyte component and content are: Cu
2+: 35-50g/l, the concentration of acid: 160-180g/l;
Additive: gelatine 50-80g/t; Thiocarbamide 50-70g/t; Casein food grade 30-70g/t; Hydrochloric acid 200-400ml/t;
Electrolyte temperature: 60-68 DEG C;
Anode: red copper bar is as anode conducting rod;
Described electrolytic solution current density is 230-340A/m
2, circulation of elecrolyte amount is 15-60l/min.
Described anode pole distance is 80-110mm.
Described anode is made by the following method: after copper sponge is packed with diaphragm bag, pack in anode superstructure, anode conducting rod is inserted in anode superstructure and is made into anode.
Described anode superstructure is little, corrosion-resistant, the on-deformable PVC of proportion or glass reinforced plastic framework, and described diaphragm bag is that good corrosion resistance, aperture are 50-200 object nylon wire.
Principle of the present invention is: under galvanic effect, and the dissolving of the anode generation copper of making of copper sponge: Cu-2e → Cu
2+; Reduction at the negative electrode generation cupric ion of making of copper sheet obtains cathode copper: Cu
2++ 2e → Cu.The electropotential metallic impurity more negative than copper lose electronics and enter in electrolytic solution, but can not on negative electrode, separate out, and regularly extension electrolytic solution reuse after purifying makes within its foreign matter content remains on certain limit; And the electropotential metallic impurity more positive than copper are that the anode sludge comes off and bottom land, the anode sludge after centrifuging, otherwise processed, filtrate flows into Lower tank after press filtration, after purifying, pumps into header tank cyclically utilizing.
The invention has the beneficial effects as follows: adopt wet method smelting process, shorten the technical process of extracting copper from copper oxide ore, discarded copper oxide ore, contained waste liquid, production cost is low, metal recovery rate is high, can reach more than 98%, produces liquid closed cycle, wastewater flow rate is few, reduce energy consumption, eliminate environmental pollution, cathode copper master is of high grade reaches 99.96%, and current efficiency is greater than 97%.
Brief description of the drawings
Fig. 1 is schema of the present invention.
Embodiment
Below principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1: see Fig. 1, a kind of copper sponge Direct Electrolysis is produced the method for cathode copper, is characterized in:
Electrolyte component and content are: Cu
2+: 35-50g/l, the concentration of acid: 160-180g/l;
Additive: gelatine 50-80g/t; Thiocarbamide 50-70g/t; Casein food grade 30-70g/t; Hydrochloric acid 200-400ml/t;
Electrolyte temperature: 60-68 DEG C;
Anode: red copper bar is as anode conducting rod.
Described electrolytic solution current density is 230-340A/m
2, circulation of elecrolyte amount is 15-60l/min.
Described anode pole distance is 80-110mm.
Anode making method: the lean ore in copper mine recovery process, barrow, contain a large amount of cupric oxide, the copper sponge that utilizes dilute sulphuric acid to leach, produce through iron powder replacement cupric oxide ore, by deironing, removal of impurities, the operation processing such as dry, after the diaphragm bag that for copper sponge, good corrosion resistance, aperture 50-200 object nylon wire are made is packed, pack in the anode superstructure that little, corrosion-resistant, the on-deformable glass reinforced plastic framework of proportion makes; With conducting electricity very well, dissolution rate is slow, material comprehensive cost is low red copper bar is as anode conducting rod, this red copper bar is inserted to anode superstructure and is made into anode.
Make negative electrode with sheet copper, carry out electrolysis, more than monolithic cathode copper weight reaches 10kg or when centre thickness is not less than 5mm, can be from extracting after scalding processing and put in storage in electrolyzer.
The electropotential metallic impurity more negative than copper lose electronics and enter in electrolytic solution, but can not on negative electrode, separate out, and regularly extension electrolytic solution reuse after purifying makes within its foreign matter content remains on certain limit; And the electropotential metallic impurity more positive than copper are that the anode sludge comes off and bottom land, the anode sludge after centrifuging, otherwise processed, filtrate flows into Lower tank after press filtration, after purifying, pumps into header tank cyclically utilizing.
After testing, the cathode copper of production reaches standard cathode copper standard.
Embodiment 2: with embodiment 1, just anode pole distance is 100mm, and anode superstructure material is PVC.
Embodiment 3: with embodiment 1, just anode pole distance is 80mm.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. copper sponge Direct Electrolysis is produced a method for cathode copper, it is characterized in that:
Electrolyte component and content are: Cu
2+: 35-50g/l, the concentration of acid: 160-180g/l;
Additive: gelatine 50-80g/t; Thiocarbamide 50-70g/t; Casein food grade 30-70g/t; Hydrochloric acid 200-400ml/t;
Electrolyte temperature: 60-68 DEG C;
Anode: red copper bar is as anode conducting rod;
Described electrolytic solution current density is 230--340A/m
2, circulation of elecrolyte amount is 15-60l/min;
Described anode pole distance is 80-110mm;
Described anode is made by the following method: after copper sponge is packed with diaphragm bag, pack in anode superstructure, anode conducting rod is inserted in anode superstructure and is made into anode;
Described anode superstructure is little, corrosion-resistant, the on-deformable PVC of proportion or glass reinforced plastic framework, and described diaphragm bag is that good corrosion resistance, aperture are 50-200 object nylon wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110164103.8A CN102268692B (en) | 2011-06-21 | 2011-06-21 | Method for producing cathode copper by directly electrolyzing spongy copper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110164103.8A CN102268692B (en) | 2011-06-21 | 2011-06-21 | Method for producing cathode copper by directly electrolyzing spongy copper |
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| CN102268692A CN102268692A (en) | 2011-12-07 |
| CN102268692B true CN102268692B (en) | 2014-06-11 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278291A (en) * | 2014-10-24 | 2015-01-14 | 天津中色再生金属工程技术研究院 | Method of directly melting and molding scrap copper to extract copper by electrolysis |
| CN105132946A (en) * | 2015-09-22 | 2015-12-09 | 太原工业学院 | Compound additive for high-purity cathode copper |
| CN106011930B (en) * | 2016-07-28 | 2018-09-25 | 河南豫光金铅股份有限公司 | A kind of continuous preparation method of cupric electrolysis refining electrolyte |
| CN109055979A (en) * | 2018-09-04 | 2018-12-21 | 太原工业学院 | A kind of electrolysis unit and a kind of method of electrolysis copper processed |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036805A (en) * | 1989-03-20 | 1989-11-01 | 重庆钢铁研究所 | Direct electrolytic refining of copper scrap by stainless steel anode frame |
| CN1390983A (en) * | 2002-07-24 | 2003-01-15 | 吉林市宏志实业发展有限公司 | Process for preparing cathode copper by one-step electrolysis of raw red copper |
| CN2732762Y (en) * | 2004-10-12 | 2005-10-12 | 范有志 | Wire frame combined type anode basket device for direct electrolysis of copper scrap |
-
2011
- 2011-06-21 CN CN201110164103.8A patent/CN102268692B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036805A (en) * | 1989-03-20 | 1989-11-01 | 重庆钢铁研究所 | Direct electrolytic refining of copper scrap by stainless steel anode frame |
| CN1390983A (en) * | 2002-07-24 | 2003-01-15 | 吉林市宏志实业发展有限公司 | Process for preparing cathode copper by one-step electrolysis of raw red copper |
| CN2732762Y (en) * | 2004-10-12 | 2005-10-12 | 范有志 | Wire frame combined type anode basket device for direct electrolysis of copper scrap |
Non-Patent Citations (4)
| Title |
|---|
| 武战强.添加剂对阴极铜质量影响的分析与探讨.《中国有色冶金》.2011,(第2期),全文. |
| 添加剂对阴极铜质量影响的分析与探讨;武战强;《中国有色冶金》;20110430(第2期);全文 * |
| 添加剂对阴极铜质量的影响;陆湖南等;《有色矿冶》;20051231;第21卷(第6期);第33页表1 * |
| 陆湖南等.添加剂对阴极铜质量的影响.《有色矿冶》.2005,第21卷(第6期), |
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