CN105441989A - Method for making electrolytic copper powder fall off from negative plates easily - Google Patents
Method for making electrolytic copper powder fall off from negative plates easily Download PDFInfo
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- CN105441989A CN105441989A CN201510836870.7A CN201510836870A CN105441989A CN 105441989 A CN105441989 A CN 105441989A CN 201510836870 A CN201510836870 A CN 201510836870A CN 105441989 A CN105441989 A CN 105441989A
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- copper powder
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Abstract
The invention provides a method for making electrolytic copper powder fall off from negative plates easily. The method includes the following steps that firstly, the same number of the negative plates and positive plates are used in an electrolytic cell, and forward direction electrolysis is conducted for 30 min to 60 min; secondly, after forward direction electrolysis in the first step is finished, the negative plates and the positive plates are changed over to be subjected to electrolysis; thirdly, after the negative plates and the positive plates are changed over and subjected to electrolysis in the second step, the upper sides of the negative plates are vibrated mechanically or the negative plates are struck manually, so that all the copper powder falls off to the bottom of the electrolytic cell; and fourthly, after the third step is finished, the negative plates and the positive plates are changed over again, forward direction electrolysis is conducted for 30 min to 60 min, and the first step to the fourth step are repeated and circulated. By the adoption of the method, the electrolytic copper powder can fall off from the negative plates easily without copper powder residues, powder brushing time can be saved, and production efficiency is improved; and the cost spent in manufacturing the negative plates separately in the electrolytic copper powder production process is reduced.
Description
Technical field
The invention belongs to technical field of electrochemistry, be specifically related to a kind of electrolytic copper powder easily from the method that negative plate comes off, this kind of method is applicable to electrolytic copper powder production process, and uses electrolytic process to prepare the shedding process of other powder.
Background technology
The preparation of copper powder comprises atomization, reduction method and electrolytic process etc.The copper powder purity produced due to electrolytic process is high, and active high, loose density is low and suppression performance good, is thus widely used in the aspects such as electrical carbon product, friction materials and powdered metal parts.
Electrolytic process utilizes fine copper plate as anode, produces electrolytic copper powder by regulating electrolyte component, concentration and current density etc.And negative plate can adopt fine copper plate, stereotype, titanium plate etc., but easily make lead content in copper powder exceed standard due to stereotype, titanium plate poorly conductive and cost is high, therefore negative plate is based on fine copper plate.Fine copper plate, as cathode copper, often needs further processing, makes its smooth surface, and be easy to scrape powder, processing charges is higher.
In traditional electrolyte copper powder production process, after electrolysis for some time (brush dust cycle), need mechanical brush dust (being generally manual operation).Machinery brush dust needs to expend more manpower, needs the long period simultaneously.And copper powder grows usually comparatively tight on negative plate, mechanical brush dust can make negative plate leaves remaining copper powder.Therefore, a kind of method making electrolytic copper powder be easy to come off from negative plate is provided to be necessary.
Summary of the invention
The object of the invention is just to provide a kind of electrolytic copper powder easily from the method that negative plate comes off, and this method utilizes anode and cathode to switch electrolysis, then mechanical vibration or manually beat copper powder is come off from negative plate.
The object of the invention is to be achieved through the following technical solutions.
Electrolytic copper powder easily from the method that negative plate comes off, comprises the steps:
((1) uses the negative plate and positive plate that number is identical in a cell, forward electrolysis 30min ~ 60min.
(2), after step (1) forward electrolysis completes, switch anode and cathode and carry out electrolysis.
(3) step (2) is switched after anode and cathode electrolysis completes, and uses on the upside of mechanical vibration negative plate or manually beats negative plate, making copper powder all drop to bottom of electrolytic tank.
(4) after step (3) completes, again anode and cathode is switched, forward electrolysis 30min ~ 60min, with this circulation step (1) to step (4).
Further, the positive plate that uses of step (1) described electrolysis and negative plate all adopt fine copper plate.
Further, the anode and cathode of switching described in step (2) carries out electrolysis, changes sense of current electrolysis 2min ~ 5min, the copper powder layer on negative plate is loosened and is easy to come off.
By switching anode and cathode in electrolytic copper powder production process designed by the present invention, making the copper powder layer on negative plate be easy to come off, saving the production time, enhancing productivity; Save manpower and be convenient to mechanical automation production; Reduce the remnants of copper powder at negative plate, improve the quality of production, contribute to the economic benefit improving plant produced; And decrease the expense that in electrolytic copper powder production technique, negative plate makes separately.
Accompanying drawing explanation
Fig. 1 is the negative plate picture after the electrolysis of the application's forward.
Fig. 2 is the negative plate picture after the electrolysis of the application's forward is beaten.
Fig. 3 is the negative plate picture after the application switches electrolysis.
Fig. 4 be the application switch electrolysis beat after negative plate picture.
Embodiment
The following example is further explanation of the present invention, does not constitute any limitation the present invention.
In the electrolytic system in laboratory, in electrolyzer, place two pieces of negative plates and two pieces of positive plates, carry out the conversion of periodic polarity connection in electrolyzer busbar junction.Battery lead plate is the electrolytic copper plate of 140 (height) × 100 (wide) × 5 (thick) mm, useful area 0.1m × 0.1m=0.01m
2, current density 1000A/m
2meter, needs electric current 0.01 × 5 × 1000=50A altogether.Interpole gap is as far as possible little.
Switch on power forward electrolysis 40min, stops electrolysis observing copper powder situation on negative plate, and on visible negative plate, copper powder is fine and close and 100% to cover, as shown in Figure 1.Then beaing on the upside of negative plate ten times and observe copper powder dropping situations, only have about 10% copper powder to come off, its shedding effect is shown in accompanying drawing 2.Test as follows as contrast.
Embodiment 1
Switch on power forward electrolysis 40min, then more polar exchanging.More electrolysis 5min after polar exchanging, stops electrolysis observing copper powder situation on negative plate, and on visible negative plate, copper powder is loose and only have about 50% thereon attached, as shown in Figure 3.Then, beaing on the upside of negative plate ten times and observe copper powder dropping situations, on visible negative plate, copper powder 100% comes off, and its shedding effect is shown in accompanying drawing 4.Operate described in recirculation, each forward electrolysis time is 40min, more electrolysis 5min after polar exchanging.
Embodiment 2
Repeat embodiment 1, just each forward electrolysis time is 60min, more electrolysis 2min after polar exchanging.
Embodiment 3
Repeat embodiment 1, just each forward electrolysis time is 30min, more electrolysis 3.5min after polar exchanging.
Embodiment 4
Repeat embodiment 1, just each forward electrolysis time is 45min, more electrolysis 2min after polar exchanging.
Claims (3)
1. electrolytic copper powder is easily from the method that negative plate comes off, and comprises the steps:
(1) negative plate and the positive plate of same number is used in a cell, forward electrolysis 30min ~ 60min;
(2), after step (1) forward electrolysis completes, switch anode and cathode and carry out electrolysis;
(3) step (2) is switched after anode and cathode electrolysis completes, and uses on the upside of mechanical vibration negative plate or manually beats negative plate, making copper powder all drop to bottom of electrolytic tank;
(4) after step (3) completes, again anode and cathode is switched, forward electrolysis 30min ~ 60min, with this circulation step (1) to step (4).
2. a kind of electrolytic copper powder as claimed in claim 1 is easily from the method that negative plate comes off, and it is characterized in that: the positive plate in step (1) described electrolyzer and negative plate all adopt fine copper plate.
3. a kind of electrolytic copper powder as claimed in claim 1 is easily from the method that negative plate comes off, and it is characterized in that: the anode and cathode of switching described in step (2) carries out electrolysis, changes sense of current electrolysis 2min ~ 5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510836870.7A CN105441989A (en) | 2015-11-26 | 2015-11-26 | Method for making electrolytic copper powder fall off from negative plates easily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510836870.7A CN105441989A (en) | 2015-11-26 | 2015-11-26 | Method for making electrolytic copper powder fall off from negative plates easily |
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| Publication Number | Publication Date |
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| CN105441989A true CN105441989A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510836870.7A Pending CN105441989A (en) | 2015-11-26 | 2015-11-26 | Method for making electrolytic copper powder fall off from negative plates easily |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2140990A1 (en) * | 1994-01-25 | 1995-07-26 | Jose Araya Soloraza | Procedure for stripping electrolytic copper deposited on stainless steel, titanium or other metallic permanent cathodes |
| CN1284139A (en) * | 1998-02-04 | 2001-02-14 | 电铜产品有限公司 | Low density high surface area copper powder and electrodeposition process for making same |
| CN101550560A (en) * | 2009-04-30 | 2009-10-07 | 健鼎（无锡）电子有限公司 | Treatment method for using copper sulphate electrolysis method to strip residue copper on electroplating skeet chuck of PCB |
| JP2012193436A (en) * | 2011-03-17 | 2012-10-11 | Pan Pacific Copper Co Ltd | Metal electrowinning method |
| JP2015206101A (en) * | 2014-04-23 | 2015-11-19 | パンパシフィック・カッパー株式会社 | Peeling method of electrodeposited copper |
-
2015
- 2015-11-26 CN CN201510836870.7A patent/CN105441989A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2140990A1 (en) * | 1994-01-25 | 1995-07-26 | Jose Araya Soloraza | Procedure for stripping electrolytic copper deposited on stainless steel, titanium or other metallic permanent cathodes |
| CN1284139A (en) * | 1998-02-04 | 2001-02-14 | 电铜产品有限公司 | Low density high surface area copper powder and electrodeposition process for making same |
| CN101550560A (en) * | 2009-04-30 | 2009-10-07 | 健鼎（无锡）电子有限公司 | Treatment method for using copper sulphate electrolysis method to strip residue copper on electroplating skeet chuck of PCB |
| JP2012193436A (en) * | 2011-03-17 | 2012-10-11 | Pan Pacific Copper Co Ltd | Metal electrowinning method |
| JP2015206101A (en) * | 2014-04-23 | 2015-11-19 | パンパシフィック・カッパー株式会社 | Peeling method of electrodeposited copper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Application publication date: 20160330 |
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