CN1145958A - Direct electrolysis process of refining copper-bearing waste material - Google Patents
Direct electrolysis process of refining copper-bearing waste material Download PDFInfo
- Publication number
- CN1145958A CN1145958A CN95116009A CN95116009A CN1145958A CN 1145958 A CN1145958 A CN 1145958A CN 95116009 A CN95116009 A CN 95116009A CN 95116009 A CN95116009 A CN 95116009A CN 1145958 A CN1145958 A CN 1145958A
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- copper
- anode
- copper material
- sandstone
- granularity
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present process for refining directly copper sludge, copper ash and other copper-containing waste material includes separating impurities via special technological process and mixing various waste copper material in a certain proportion to compound anode material to be loaded into an anode basket. The anode basket is made of GRP and has a dacron cloth liner and a anode lead plate fixed in the center. The said method has high copper recovering rate and high current efficiency and it has 50% lower power consumption compared with smelting method.
Description
The present invention relates to the processing method of the direct electrorefining of a kind of copper-bearing waste material.
Utilize copper-bearing waste material to produce electrolytic copper, the general thermal process that adopts, this method exists technical process long, and investment is big, the expenses of environmental protection height, the rate of recovery is hanged down and problems such as energy consumption is big, for addressing the above problem, and the direct electrolytic method of employing frame electrode that has, but this method is raw materials used must be useless composition brass material, cupric needs therefore to utilize the direct electrolysis of low-grade copper-bearing waste material such as copper ash, copper sludge more than 60%, fails to realize on industrial production.
The present invention provides a kind of processing method of utilizing the direct electrorefinings of copper-bearing waste material such as copper ash, copper sludge, it is characterized in that adopting a kind of special technology separating impurity, various copper-bearing waste materials are mixed by a certain percentage, be mixed with the anode copper material, the direct electrolysis of the anode frame of packing into, anode frame is made with glass reinforced plastic, interior dress shape, the woven dacron cover that size is identical with anode frame, and the anode frame center fixed has a chloride plate.
The used special impurity-removing method of the present invention is: with the copper ash, copper-bearing waste materials such as copper sludge are earlier through washing desliming and preliminary desanding, soak except that its most of soluble impurity with waste electrolyte then, and wherein most of insoluble sandstone impurity, sieve again and the flotation processing after being placed on electrolysis, again the copper material (Coarse Aggregate) after the preliminary removal of impurities and secondary material and fines are pressed 1: 2: 3 mixed, be mixed with the anode copper material, wherein, Coarse Aggregate is the shot copper material that contains sandstone impurity class, secondary material and fines be not for containing the copper sludge material and the copper foam material of sandstone impurity, the Coarse Aggregate copper content must be more than 30%, and the grade that is made into of anode copper material is 60-80%.Adopt the collocation of different grade copper material, both guaranteed the higher grade requirement of antianode copper material, allow again in the anode copper material to keep bigger foreign matter content, thus the direct electrorefining of the copper material that has guaranteed any grade after preliminary removal of impurities.
The anode copper material is that the granularity by coarse grain copper material is divided into some classes, and electrolysis is carried out in classification, and the granularity of the blister copper grain of every class is consistent with the granularity of sandstone wherein, and maximum particle size and minimum particle size difference are advisable with less in the coarse grain copper material.Being deposited at the bottom of the anode frame 20 centimeters with coarse grain copper material is an electrolysing period, and the granularity of the copper material more than 98% is less than the granularity of minimum sandstone in the deposition material when guaranteeing electrolysis, and it is consistent with the time at the bottom of the copper material is deposited on frame to time of desired particle size to control electrofusion.
Method of the present invention, when carrying out electrorefining, positive plate is lower 10 centimeters than negative plate at bottom of electrolytic tank, the beginning when filling with substance, first at the bottom of anode frame, the thin copper material of packing into, adorn 10 centimeters high, the anode copper material of packing into then, charging face is higher 15 centimeters than electrolysis liquid surface, in the later stage of electrolysing period, add a certain amount of pure thin copper material, make unprecipitated blister copper grain be dissolved into the separation desired particle size, and with the sandstone coprecipitation, guaranteed the separation rate that sandstone is higher.When the granularity of blister copper grain is dissolved granularity less than minimum sandstone, then isolate sandstone in the anode sludge, less than 200 purpose anode pug flotation process separating impurity with sieve.During electrorefining, the control bath voltage is 0.25V-0.5V, is advisable with 0.35V, and current density is 150-280A/m
2, with 220A/m
2Be advisable, two pole spans are the 1.5-2 centimetre.Bath composition: Cu40-50g/L is advisable with 45g/L, H
2SO
4200g/L, Fe≤1.2g/L Zn≤35g/L.
Electrolytic refining process of the present invention, but copper-bearing waste materials such as electrolytic copper ash, copper sludge, copper ashes and precipitated copper, the total yield of copper is more than 98%, anodic mean current efficient is 98%, the mean current efficient of negative electrode is 96%, when current efficiency is identical, compares with pyrogenic process, facility investment is few, technology is simple, and comprehensive energy consumption is low by about 50%, has both reduced the copper loss in the impurity removal process, there is not melting again, the scaling loss of copper in the casting process.
The present invention is described further with an embodiment below.
Raw material: 1, brass ash: Cu10% Zn 6% Fe2%
Mud rate 50% sand 32% granularity 20-270 order
2, fine copper foam: Cu95% Zn surplus granularity 100-250 order
3, wire drawing mud: Cu 88% O
2Surplus
With brass ash water elution mud, screening is 6 classes then, and is all kinds of after the wet concentration device separates sandstone and iron removal by magnetic separation earlier, leach half an hour with waste electrolyte at 60 ℃ again, obtain the copper material after the preliminary removal of impurities, this copper material and copper foam, wire drawing mud and Floatation of Copper material are pressed 1: 2: 3 mixed, are mixed with the anode copper material, it is made into grade more than 80%, during electrolysis, the thin copper sludge (or copper foam) of packing at the bottom of anode frame is earlier adorned 10 centimeters high, reinstall the anode copper material, charging face is higher 15 centimeters than electrolysis liquid surface, during electrolysis, at set intervals, feed in raw material once, make charge level higher 10 centimeters than electrolysis liquid surface all the time, electrolysis 10 days was an one-period, stopped to add the anode copper material after 8 days, change and add pure thin copper material, stop the last day feeding in raw material, when electrolysis finishes, the anode sludge is sieved, remove sandstone impurity, will carry out the flotation removal of impurities less than 200 purpose anode pugs again.
Electrolytic processing condition: bath composition: Cu 40-50g/L, H
2SO
4200g/L, electrolysis temperature: 50-60 ℃, bath voltage: 0.35V, close of electric current: 220A/m
3
The copper factor of gained electrolytic copper is 99.95-99.96%, meets the standard of first grade, and anodic mean current efficient is 98.2%, and the mean current efficient of negative electrode is 97%.
Claims (6)
1, the processing method of the direct electrorefining of a kind of copper-bearing waste material, adopt the direct electrolysis of anode frame, it is characterized in that adopting copper ash, copper sludge, the low-grade copper-bearing waste material of copper ashes, technology removal of impurities with special mixes various copper-bearing waste materials by a certain percentage, is mixed with the anode copper material, the direct electrolysis of the anode frame of packing into, anode frame is made with glass reinforced plastic, interior dress shape, the woven dacron cover that size is identical with anode frame, and the anode frame center fixed has a chloride plate.
2, method according to claim 1, it is characterized in that deimpurity special process, is that copper-bearing waste material is first through washing desliming and preliminary desanding, soaks except that its most of soluble impurity with waste electrolyte then, after its most of insoluble sandstone impurity was placed on electrolysis, screening and flotation were handled again.
3, method according to claim 1, it is characterized in that preparing the anode copper material and be the coarse grain copper material after the removal of impurity and secondary material and fines mixed by 1: 2: 3, be mixed with the anode copper material, wherein coarse grain copper material is the shot copper material that contains sandstone impurity class, secondary material and fines be not for containing the copper sludge material and the copper foam material of sandstone, the copper content of coarse grain copper material must be more than 30%, and the grade that is made into of anode copper material is 60-80%.
4, method according to claim 3 is characterized in that the anode copper material is divided into some classes by the granularity of coarse grain copper material, and electrolysis is carried out in classification, and the granularity of every class blister copper grain is consistent with the granularity of sandstone wherein.
5, according to claim 1,2 described methods, it is characterized in that when electrorefining positive plate is lower 10 centimeters than negative plate at bottom of electrolytic tank, the beginning when filling with substance, the first thin copper material of at the bottom of anode frame, packing into, adorn 10 centimeters high, the anode copper material of packing into then is in the later stage of electrolysing period, add a certain amount of pure thin copper material, when the granularity of blister copper grain is dissolved granularity less than minimum sandstone, then isolate sandstone in the anode sludge with sieve, separate its impurity less than 200 purpose anode pugs with flotation process.
6. method according to claim 1, should control bath voltage when it is characterized in that electrolysis is 0.25V-0.5V, is advisable with 0.35V, current density is 150-280A/m
2, with 220A/m
2Be advisable, two pole spans are the 1.5-2 centimetre, and bath composition Cu40-50g/L is advisable with 45g/L, H
2SO
4200g/L, Fe≤1.2g/L Zn≤35g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95116009A CN1145958A (en) | 1995-09-20 | 1995-09-20 | Direct electrolysis process of refining copper-bearing waste material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95116009A CN1145958A (en) | 1995-09-20 | 1995-09-20 | Direct electrolysis process of refining copper-bearing waste material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1145958A true CN1145958A (en) | 1997-03-26 |
Family
ID=5080720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95116009A Pending CN1145958A (en) | 1995-09-20 | 1995-09-20 | Direct electrolysis process of refining copper-bearing waste material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1145958A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165215B (en) * | 2006-07-04 | 2011-11-16 | 路易斯·安东尼奥·卡纳莱斯·米兰达 | Method and equipment for obtaining metal powder, metal plate or metal cathode from any materials containing metal |
| CN102554186A (en) * | 2012-02-17 | 2012-07-11 | 重庆重冶铜业有限公司 | Method for preparing copper electrolysis anode plate |
| CN102776527A (en) * | 2012-07-31 | 2012-11-14 | 安徽嘉伟再生资源有限公司 | Novel clean, energy-saving and environment-friendly technology for extracting high-grade copper plate by utilizing waste containing copper |
| CN104032334A (en) * | 2013-03-07 | 2014-09-10 | 胡桂生 | Long-acting composite basket type anode forming device |
| 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 |
| CN105018963A (en) * | 2014-04-21 | 2015-11-04 | 上海奇谋能源技术开发有限公司 | Method for performing direct electrorefining on metal crushed aggregates |
| CN105543891A (en) * | 2016-02-05 | 2016-05-04 | 江西瑞林稀贵金属科技有限公司 | Method for preparing copper and nickel sulfate |
| CN105714329A (en) * | 2014-12-05 | 2016-06-29 | 上海奇谋能源技术开发有限公司 | Method for directly electrolyzing metal scraps |
| CN111748828A (en) * | 2020-06-05 | 2020-10-09 | 北京科技大学 | Method for recycling copper, silver, selenium and tellurium through molten salt electrolysis of copper anode slime |
| CN111826684A (en) * | 2020-07-31 | 2020-10-27 | 中华全国供销合作总社天津再生资源研究所 | Electrolytic tank and electrolytic system for producing copper powder by using scrap copper material |
-
1995
- 1995-09-20 CN CN95116009A patent/CN1145958A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165215B (en) * | 2006-07-04 | 2011-11-16 | 路易斯·安东尼奥·卡纳莱斯·米兰达 | Method and equipment for obtaining metal powder, metal plate or metal cathode from any materials containing metal |
| CN102554186A (en) * | 2012-02-17 | 2012-07-11 | 重庆重冶铜业有限公司 | Method for preparing copper electrolysis anode plate |
| CN102776527B (en) * | 2012-07-31 | 2015-10-07 | 界首市格林铜业有限公司 | Utilize cupric waste wet underwater welding higher-grade copper coin clean energy-saving environmental-protecting process |
| CN102776527A (en) * | 2012-07-31 | 2012-11-14 | 安徽嘉伟再生资源有限公司 | Novel clean, energy-saving and environment-friendly technology for extracting high-grade copper plate by utilizing waste containing copper |
| CN104032334A (en) * | 2013-03-07 | 2014-09-10 | 胡桂生 | Long-acting composite basket type anode forming device |
| CN105018963A (en) * | 2014-04-21 | 2015-11-04 | 上海奇谋能源技术开发有限公司 | Method for performing direct electrorefining on metal crushed aggregates |
| 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 |
| CN105714329A (en) * | 2014-12-05 | 2016-06-29 | 上海奇谋能源技术开发有限公司 | Method for directly electrolyzing metal scraps |
| CN105714329B (en) * | 2014-12-05 | 2017-10-20 | 上海奇谋能源技术开发有限公司 | A kind of method of Direct Electrolysis scrap |
| CN105543891A (en) * | 2016-02-05 | 2016-05-04 | 江西瑞林稀贵金属科技有限公司 | Method for preparing copper and nickel sulfate |
| CN111748828A (en) * | 2020-06-05 | 2020-10-09 | 北京科技大学 | Method for recycling copper, silver, selenium and tellurium through molten salt electrolysis of copper anode slime |
| CN111826684A (en) * | 2020-07-31 | 2020-10-27 | 中华全国供销合作总社天津再生资源研究所 | Electrolytic tank and electrolytic system for producing copper powder by using scrap copper material |
| CN111826684B (en) * | 2020-07-31 | 2021-09-07 | 中华全国供销合作总社天津再生资源研究所 | Electrolytic tank and electrolytic system for producing copper powder by using scrap copper material |
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| WD01 | Invention patent application deemed withdrawn after publication |