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Closed-type electro-winning cell

An electrowinning cell and closed technology, which is applied in electrolytic components, electrolytic processes, cells, etc., can solve the problems of increased metal impurities, electrical efficiency, slowing down of metal electrowinning, etc., to reduce gas-liquid interface corrosion and eliminate concentration polarization , the effect of reducing the content of impurities

Inactive Publication Date: 2012-05-16
张坚
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a closed electrowinning cell to effectively solve the problems of slowing down of metal electrowinning, increased metal impurities and low electrolytic efficiency during electrolysis in existing electrowinning cells

Method used

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  • Closed-type electro-winning cell
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  • Closed-type electro-winning cell

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Embodiment Construction

[0018] The present invention will be described in detail below with reference to the accompanying drawings.

[0019] see figure 1 , the electrolyte of the existing closed electrowinning cell enters from the liquid inlet 1 of the end plate 3 on one side of the electrowinning cell, passes through the liquid through holes on the cathode and anode plates, and then sequentially passes through a group of cathodes and anodes connected in series. Electrolyte positive chamber, and then flow out from the liquid outlet of the other side end plate 3, and the electrolyte flow process is serial flow.

[0020] see figure 2 and image 3 , The present invention provides a closed electrowinning cell with parallel flow of electrolyte, including end plate 3 , cathode plate 4 , anode plate 5 , seals, pressing device 7 and insulating plate frame 6 . The end plate 3 is made of organic material or steel-lined organic material, which has the properties of corrosion resistance, insulation, high str...

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Abstract

The invention relates to a closed-type electro-winning cell. The common electro-winning system is an open glass reinforced plastic cell body. As for the open glass reinforced plastic cell body, gases generated by an electrolyte during electrolysis are easy to volatilize; and the spaces between cathodes and anodes are unequal, and the electrolyte does not flow smoothly, so that the metals deposited at the cathodes are uneven in thickness, and easy to be bent, the concentration polarization is severe, the content of the metal impurities generated by the cathodes is large, and the electrical efficiency is not high. A closed-type structure and a parallel-connected electrolyte floating way are adopted for the closed-type electro-winning cell to guarantee the chemical components of the electrolyte flowing into each electro-winning room to be same as those of the overall inlet liquid of the electro-winning cell, and the concentration polarization is eliminated during the electrolysis process by combing the metal ion concentration of the electrolyte and current density to improve the velocity of flow of the electrolyte. The closed-type electro-winning cell can simply and effectively eliminate the emission of toxic or harmful gases during electrolysis, and can prevent a corrosive electrolyte from volatilizing, and can effectively reduce impurity contents of electro-winning products, greatly improve electric efficiency, and reduce the gas-liquid interface corrosion on the anodes caused by air bubbles.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy, refers to an electrowinning device and an electrowinning system suitable for electrowinning hydrometallurgy of nickel, copper, cobalt, zinc and other metals, and specifically refers to a closed electrowinning tank. Background technique [0002] At present, among the vast majority of manufacturers producing electrowinning copper, nickel and cobalt in the field of hydrometallurgy in China, the most commonly used electrowinning system is an open glass fiber reinforced plastic tank, and multiple groups of cathodes and anodes are in a large overall electrolyte environment. , the electrolyte flows slowly and remains almost static. Affected by the structure and process of this type of electrowinning cell, the electrolyte and gas generated during the electrolysis process are easily volatilized, and the production site environment is harsh; The uneven distribution of the constituent ions leads to...

Claims

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Application Information

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IPC IPC(8): C25C7/00
Inventor 张坚
Owner 张坚
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