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Method for clearing copper bonded on starting sheet

A technology of starting pole piece and clear water, which is applied to the improvement of process efficiency, instruments, electrolysis components, etc., can solve the problems of difficult separation of the starting pole piece and copper, difficult operation in the grinding process, deformation of the starting pole piece, etc. The effect of saving labor costs, avoiding deformation and wear

Inactive Publication Date: 2018-05-18
SHENZHEN ZHONGJIN LINGNAN NONFEMET COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production process, due to the problem of process control, the precipitated copper and the cathode starter sheet often stick together, and the starter sheet and copper are tightly combined and difficult to separate, which affects the use. Clean up the copper junction to restore the initial plate
At present, the only cleaning method is to use a grinder to manually grind the adhesion between the bonded copper and the initial electrode to achieve the separation of the two, but the grinding process is difficult to operate, and it is easy to cause deformation and wear of the initial electrode. serious injury

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] will be 1.5m 3 Add water to 2m 3 In the reaction kettle, start stirring, then add concentrated sulfuric acid, be mixed with the dilute sulfuric acid that concentration is 230g / L, then add ferric sulfate in dilute sulfuric acid, after stirring until ferric sulfate is all dissolved, the obtained iron content is 25% (according to mass percent meter) ferric sulfate solution, put into the storage tank for subsequent use. Then, use a pump to pump the prepared ferric sulfate solution into the scalding tank, then put the starter sheets with bonded copper on the surface into the scalding tank and arrange them neatly, and then turn on the steam heating device of the scalding tank, so that The starter sheet was soaked in ferric sulfate solution at 74°C for 7.5 hours. Next, manually remove the starter sheet from the scalding tank, wipe it with a cotton cloth to remove the undissolved bonded copper on its surface, then put the starter sheet into clean water for cleaning, and get t...

Embodiment 2

[0029] will be 1.5m 3 Add water to 2m 3 In the reaction kettle, start stirring, then add concentrated sulfuric acid to prepare dilute sulfuric acid with a concentration of 250g / L, then add ferrous sulfate to the dilute sulfuric acid, stir until ferrous sulfate is completely dissolved, and obtain ferrous sulfate solution, then Hydrogen peroxide is added to oxidize ferrous ions to ferric ions to obtain a ferric sulfate solution with an iron content of 16% (by mass percentage), which is put into a storage tank for later use. Then, use a pump to pump the prepared ferric sulfate solution into the scalding tank, then put the starter sheets with bonded copper on the surface into the scalding tank and arrange them neatly, and then turn on the steam heating device of the scalding tank, so that The starter sheet was soaked in ferric sulfate solution at 80°C for 6.5 hours. Next, manually remove the starter sheet from the scalding tank, wipe it with a cotton cloth to remove the undissol...

Embodiment 3

[0033] will be 1.5m 3 Add water to 2m 3 In the reaction kettle, start stirring, then add concentrated sulfuric acid to prepare dilute sulfuric acid with a concentration of 200g / L, then add ferrous hydroxide to the dilute sulfuric acid, stir until ferrous hydroxide is completely dissolved, and obtain ferrous sulfate solution , then inject compressed air to oxidize ferrous ions to ferric ions to obtain a ferric sulfate solution with an iron content of 30% (by mass percentage), and put it into a storage tank for subsequent use. Then, use a pump to pump the prepared ferric sulfate solution into the scalding tank, then put the starter sheets with bonded copper on the surface into the scalding tank and arrange them neatly, and then turn on the steam heating device of the scalding tank, so that The starter sheet was soaked in ferric sulfate solution at 70°C for 8 hours. Next, manually remove the starter sheet from the scalding tank, wipe it with a cotton cloth to remove the undisso...

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PUM

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Abstract

The invention relates to a method for clearing copper bonded on a starting sheet. The method for clearing the copper bonded on the starting sheet comprises the following steps that the starting sheetof which the copper is bonded on the surface is put into a ferric sulfate solution for soaking, the soaked starting sheet is put into clean water for cleaning after being taken out, and the starting sheet which is subjected to clearing of the bonded copper; and the ferric sulfate solution can be prepared by ferric sulfate, ferric hydroxide, ferrous sulfate or ferrous hydroxide and dilute sulfuricacid with the density of 200-250g / L. Compared with the prior art, the method for clearing the copper bonded on the starting sheet has the advantages that operation is simple, damage to the starting sheet is small, and the labor cost is saved.

Description

technical field [0001] The invention relates to the technical field of swirl electrolysis, in particular to a method for cleaning copper bonded to a starting electrode sheet. Background technique [0002] At present, the production of cathode copper mainly adopts two methods: traditional electrolysis and swirl electrolysis. The traditional electrolysis technology is to place the cathode and anode plates in the slow-flowing or stagnant tank of the electrolyte. Under the action of the electric field, the anions move directionally to the anode, and the cations move directionally to the cathode. By controlling the electrolysis conditions, metal cations are deposited on the cathode. Precipitate to obtain electrolytic metal products. The swirl electrolysis technology is also based on the basic theory of electrochemistry, and based on the difference in the theoretical precipitation potential of each metal ion, that is, as long as the metal to be extracted has a large potential dif...

Claims

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Application Information

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IPC IPC(8): C25C7/08C25C1/12
CPCC25C1/12C25C7/08Y02P10/20
Inventor 张伟张登凯宫晓丹吴才贵尹朝晖余锋王旭战胡立廖文讯
Owner SHENZHEN ZHONGJIN LINGNAN NONFEMET COMPANY
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