CN102134729A - Method for preparing copper powder via electrolytic self-desorption - Google Patents
Method for preparing copper powder via electrolytic self-desorption Download PDFInfo
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- CN102134729A CN102134729A CN2011100493467A CN201110049346A CN102134729A CN 102134729 A CN102134729 A CN 102134729A CN 2011100493467 A CN2011100493467 A CN 2011100493467A CN 201110049346 A CN201110049346 A CN 201110049346A CN 102134729 A CN102134729 A CN 102134729A
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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
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Abstract
The invention discloses a method for preparing copper powder via electrolytic self-desorption, which relates to a preparation method of copper powder and solves the problems of low efficiency, high energy consumption and high cost due to the defects of requiring regular powder scraping, ball milling and screening in the processes of preparing copper powder via electrolysis in the prior art. The method for preparing copper powder via electrolytic self-desorption comprises the following steps: taking a platinum sheet and a platinum needle as two electrode materials, taking copper sulfate solution as electrolyte and carrying out electrolysis by using an alternating current method; taking the platinum sheet as cathode and the platinum needle as anode or taking the platinum sheet as anode and the platinum needle as cathode; and carrying out electrolysis by taking the process as an alternating current supply period so that the copper powder prepared on a platinum sheet plate can be self-desorbed smoothly. The method of the invention has the advantage that the platinum sheet and the platinum needle are taken as two electrode materials and the direction and the amount of the current are periodically and alternately changed so that the electrolyzed copper powder can be self-absorbed from the platinum sheet polar plate, powder scraping, ball milling and screening are not required, the efficiency is improved, the energy consumption is reduced and the cost is reduced.
Description
Technical field
The present invention relates to a kind of preparation method of copper powder.
Background technology
The production of external industrial copper powder started from the twenties in 20th century, and China began to carry out the production experiment of electrolytic copper powder in 1958, and achieved success in the mid-1960s.China's article one copper powder production line builds on the seventies.Along with fast growth of national economy, the eighties, the demand of China's copper powder began to increase sharply, and the total quantity consumed of copper powder in 2005 just reaches more than 11000 tons, and increases progressively with 10% speed year after year.The consumption structure of China's copper powder is mainly in diamond tool, powdered metal parts and electrical carbon industry three big fields.Account for 95% of whole copper powder consumption, other 5% is used for other industry, mainly is fields such as high catalytic activity and catalysts selective, nano copper lubricating oil, medicine, cakingagent, electrically conducting coating.Therefore, the market demand potential is huge.The prior art electrolytic process prepares superfine cupper powder, regularly scrapes powder at regular intervals in order to avoid the copper particle is grown up between generally all needing, and also will carry out ball milling and screening afterwards, and efficient is low, and energy consumption is big, the cost height.
Summary of the invention
Purpose of the present invention is in order to solve the prior art electrolytic process prepares needs regularly to scrape powder, ball milling, screening in the copper powder process deficiency, and then raises the efficiency, and reduces energy consumption, reduces cost.The invention provides and a kind ofly make copper powder that electrolysis produces voluntarily from the method for electrolytic pole board desorption, concrete steps are as follows: as two electrode materialss, is electrolytic solution with the copper-bath with platinized platinum and platinum pin, adopts the exchange current method to carry out electrolysis.Platinized platinum wherein: the platinum wire surface is long-pending than=3 ~ 5:1, is 10 ~ 60 g/L as the concentration of the copper-bath of electrolytic solution.One, with platinized platinum as negative electrode, the platinum pin is as anode; Two, with platinized platinum as anode, the platinum pin is as negative electrode.Carry out electrolysis with said process as an exchange current supply cycle, the copper powder for preparing on the platinized platinum plate can be successfully from desorption.Wherein the time length of electrolysis described in the step 1 is 30s, and cathode current density is set to 0.05 ~ 0.25A/cm
2, anodic current density is set to 0.1 A/cm
2Wherein the time length of electrolysis described in the step 2 is 30 s, and cathode current density all is set to 0.1 A/cm
2, anodic current density all is set to 0.1 A/cm
2The invention has the beneficial effects as follows: prepare the shortcoming that copper powder exists at existing electrolytic process, electrode and direct current electrolysis supply mode have been changed, adopt platinized platinum and platinum pin as two electrode materialss, cycle alternately changes sense of current and size of current, make copper powder that electrolysis comes out can be voluntarily from the platinized platinum pole plate from desorption, need not regularly scrape powder, ball milling, screening, improved efficient, reduce energy consumption, reduced cost.
Embodiment
Embodiment one: the present invention adopts the exchange current method to carry out electrolysis, specifically carries out according to the following steps:
As two electrode materialss, is electrolytic solution with the copper-bath with platinized platinum and platinum pin, adopts the exchange current method to carry out electrolysis.Platinized platinum wherein: the platinum wire surface is long-pending than=3 ~ 5:1, is 10 ~ 60 g/L as the concentration of the copper-bath of electrolytic solution.One, with platinized platinum as negative electrode, the platinum pin is as anode; Two, with platinized platinum as anode, the platinum pin is as negative electrode.Carry out electrolysis with said process as an exchange current supply cycle, the copper powder for preparing on the platinized platinum plate can be successfully from desorption.Wherein the time length of electrolysis described in the step 1 is 30s, and cathode current density is set to 0.05 ~ 0.25A/cm
2, anodic current density is set to 0.1 A/cm
2Wherein the time length of electrolysis described in the step 2 is 30 s, and cathode current density all is set to 0.1 A/cm
2, anodic current density all is set to 0.1 A/cm
2
Embodiment two: present embodiment and embodiment one difference are: described platinized platinum: the platinum wire surface amasss ratio=4:1, and the concentration of the copper-bath of electrolytic solution is 20 g/L.
Embodiment three: present embodiment and embodiment two differences are: the beginning cathode current density described in the step 1 is set to 0.06A/cm
2
Embodiment four: present embodiment and embodiment two differences are: the beginning cathode current density described in the step 1 is set to 0.12A/cm
2
Embodiment five: present embodiment and embodiment two differences are: the beginning cathode current density described in the step 1 is set to 0.18A/cm
2
Embodiment six: this present embodiment is with embodiment two differences: the beginning cathode current density described in the step 1 is set to 0.24A/cm
2
Embodiment seven: this present embodiment is with embodiment two differences: described platinized platinum: the platinum wire surface amasss ratio=4:1, the concentration of the copper-bath of electrolytic solution is 30 g/L, and the beginning cathode current density described in the step 1 is set to 0.12A/cm
2
Claims (7)
1. an electrolysis prepares the method for copper powder from desorption, it is characterized in that with platinized platinum and platinum pin being electrolytic solution as two electrode materialss with the copper-bath, adopts the exchange current method to carry out electrolysis; Platinized platinum wherein: the platinum wire surface is long-pending than=3 ~ 5:1, is 10 ~ 60g/L as the concentration of the copper-bath of electrolytic solution; One, with platinized platinum as negative electrode, the platinum pin is as anode; Two, with platinized platinum as anode, the platinum pin is as negative electrode; Carry out electrolysis with said process as an exchange current supply cycle, the copper powder for preparing on the platinized platinum plate can be successfully from desorption; Wherein the time length of electrolysis described in the step 1 is 30s, and cathode current density is set to 0.05 ~ 0.25A/cm
2, anodic current density is set to 0.1A/cm
2Wherein the time length of electrolysis described in the step 2 is 30 s, and cathode current density all is set to 0.1A/cm
2, anodic current density all is set to 0.1A/cm
2
2. a kind of electrolysis according to claim 1 prepares the method for copper powder from desorption, and it is characterized in that platinized platinum: the platinum wire surface amasss ratio=4:1, is 20g/L as the concentration of the copper-bath of electrolytic solution.
3. a kind of electrolysis according to claim 2 prepares the method for copper powder from desorption, it is characterized in that the beginning cathode current density is set to 0.06A/cm in the step 1
2
4. a kind of electrolysis according to claim 2 prepares the method for copper powder from desorption, it is characterized in that the beginning cathode current density is set to 0.12A/cm in the step 1
2
5. a kind of electrolysis according to claim 2 prepares the method for copper powder from desorption, it is characterized in that the beginning cathode current density is set to 0.18A/cm in the step 1
2
6. a kind of electrolysis according to claim 2 prepares the method for copper powder from desorption, it is characterized in that the beginning cathode current density is set to 0.24A/cm2 in the step 1.
7. a kind of electrolysis according to claim 1 prepares the method for copper powder from desorption, and it is characterized in that platinized platinum: the platinum wire surface amasss ratio=4:1, is 30g/L as the concentration of the copper-bath of electrolytic solution, and the beginning cathode current density is set to 0.12A/cm in the step 1
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011100493467A CN102134729A (en) | 2011-03-02 | 2011-03-02 | Method for preparing copper powder via electrolytic self-desorption |
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| CN2011100493467A CN102134729A (en) | 2011-03-02 | 2011-03-02 | Method for preparing copper powder via electrolytic self-desorption |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128272A (en) * | 2011-11-28 | 2013-06-05 | 重庆华浩冶炼有限公司 | Electrolytic copper-powder-processing technique |
| CN108707932A (en) * | 2018-08-06 | 2018-10-26 | 金川集团股份有限公司 | It can make the device and method of copper powder automatic powder discharging in a kind of electrolytic process |
| CN109128154A (en) * | 2018-08-09 | 2019-01-04 | 陕西斯瑞新材料股份有限公司 | A kind of preparation method using vacuum consumable arc-melting TiCu50 master alloy material |
| CN111876794A (en) * | 2020-07-20 | 2020-11-03 | 有研粉末新材料股份有限公司 | Negative plate combined structure, electrolysis device and copper powder preparation method |
-
2011
- 2011-03-02 CN CN2011100493467A patent/CN102134729A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128272A (en) * | 2011-11-28 | 2013-06-05 | 重庆华浩冶炼有限公司 | Electrolytic copper-powder-processing technique |
| CN103128272B (en) * | 2011-11-28 | 2016-08-10 | 重庆有研重冶新材料有限公司 | The technique that a kind of electrolysis produces copper powder |
| CN108707932A (en) * | 2018-08-06 | 2018-10-26 | 金川集团股份有限公司 | It can make the device and method of copper powder automatic powder discharging in a kind of electrolytic process |
| CN109128154A (en) * | 2018-08-09 | 2019-01-04 | 陕西斯瑞新材料股份有限公司 | A kind of preparation method using vacuum consumable arc-melting TiCu50 master alloy material |
| CN109128154B (en) * | 2018-08-09 | 2020-12-18 | 陕西斯瑞新材料股份有限公司 | Preparation method for smelting TiCu50 master alloy material by adopting vacuum consumable arc |
| CN111876794A (en) * | 2020-07-20 | 2020-11-03 | 有研粉末新材料股份有限公司 | Negative plate combined structure, electrolysis device and copper powder preparation method |
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Application publication date: 20110727 |