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Method for cleaning anode mud on zinc electrodeposition anode plate

A cleaning method and anode plate technology, applied in the metallurgical field, can solve the problems of increased power consumption, high labor intensity of workers, and damage to the anodic oxide film layer, etc.

Pending Publication Date: 2021-09-07
SHAOYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manual cleaning is not only labor-intensive for workers, but also destroys the anodic oxide film layer and damages the metal substrate of the anode, which will increase power consumption and shorten the service life of the anode
Although mechanical cleaning solves the problem of high labor intensity for workers, it will also damage the anodic oxide film layer and damage the metal substrate of the anode, which will also increase power consumption and shorten the service life of the anode

Method used

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  • Method for cleaning anode mud on zinc electrodeposition anode plate
  • Method for cleaning anode mud on zinc electrodeposition anode plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Get 18 pieces of the same type of anode plates that need to be cleaned of hanging plate anode slime, divide them into three groups by 6 pieces / group, adopt manual cleaning, mechanical cleaning and soaking cleaning of the present invention to clean up the three groups of anode plates respectively, after cleaning is completed The anode plate is directly used for zinc electrowinning until it is cleaned again, and the cleaning cycle of the anode slime is 20 days / time until the anode is scrapped. Wherein the heating mixed solution that has reducing substance and acidic substance among the present invention is cobaltous sulfate 150g / L, sulfurous acid 30g / L, sulfuric acid 150g / L, and mixed solution is placed in the tank, and solution temperature is 50 ℃, and 6 The anode plate that needs to be cleaned is placed in the tank, and the circulation pump is used to make the mixed solution flow in 20m 3 / h circulation speed flow. The anode plate to be cleaned of anode slime is soaked...

Embodiment 2

[0054] Get 18 pieces of the same type of anode plates that need to be cleaned of hanging plate anode slime, divide them into three groups by 6 pieces / group, adopt manual cleaning, mechanical cleaning and soaking cleaning of the present invention to clean up the three groups of anode plates respectively, after cleaning is completed The anode plate is directly used for zinc electrowinning until it is cleaned again, and the cleaning cycle of the anode slime is 20 days / time until the anode is scrapped. Wherein the heating mixed solution with reducing substances and acidic substances in the present invention is zinc sulfite 150g / L, nitric acid 60g / L, sulfuric acid 120g / L, the solution temperature is 60°C, the mixed solution is placed in the tank, and 60 tablets The anode plate to be cleaned is placed in the tank, and a circulation pump is used to make the mixed solution flow at 30m 3 / h circulation speed flow. Soak the anode plate that needs to be cleaned of anode slime in a mixed...

Embodiment 3

[0059] Get 18 pieces of the same type of anode plates that need to be cleaned of hanging plate anode slime, divide them into three groups by 6 pieces / group, adopt manual cleaning, mechanical cleaning and soaking cleaning of the present invention to clean up the three groups of anode plates respectively, after cleaning is completed The anode plate is directly used for zinc electrowinning until it is cleaned again, and the cleaning cycle of the anode slime is 20 days / time until the anode is scrapped. Wherein the heating mixed solution with reducing substance and acidic substance in the present invention is cobaltous sulfate 150g / L, zinc sulfite 30g / L, sulfuric acid 170g / L, mixed solution is placed in the groove, and solution temperature is 55 ℃, will 60 anode plates to be cleaned are placed in the tank, and a circulation pump is used to make the mixed solution flow in 25m 3 / h circulation speed flow. Soak the anode plate that needs to be cleaned of anode slime in the mixed solu...

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Abstract

The invention provides a method for cleaning anode mud on a zinc electrodeposition anode plate. The method comprises the following steps of: soaking the anode plate with the anode mud needing to be cleaned into a preheated mixed solution with reducing substances and acidic substances, and enabling the mixed solution to flow; taking out the anode plate from the mixed solution after soaking for a certain time; and treating impurities on the taken-out anode plate by using a zinc electrodeposition electrolyte or a zinc electrodeposition waste electrolyte. According to the cleaning method provided by the invention, the anode plate with the anode mud needing to be cleaned is immersed into the flowing solution with the reducing substances and the acidic substances for a certain time, the anode mud on the anode plate is dissolved and falls off, and cleaning of the anode mud on the anode plate is achieved, so that the method is high in automation degree, compared with manual cleaning, the problem that the labor intensity of workers is large can be well solved, batch treatment of anode plates can be realized, and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for cleaning anode slime on a zinc electrodeposition anode plate. Background technique [0002] As the mainstream process of zinc smelting, zinc hydrometallurgy accounts for more than 85% of the world's zinc production. In the process of zinc hydrometallurgy, zinc electrowinning is one of the key processes for the separation and purification of zinc metal. It is mixed with zinc sulfate, sulfuric acid and manganese sulfate The solution is the electrolyte medium, the lead-based silver-containing alloy is the anode, and the metal aluminum plate is the cathode. The zinc precipitation reaction occurs on the cathode, and the oxygen evolution reaction occurs on the anode. Due to the occurrence of anode oxygen evolution reaction, the metal matrix on the anode surface and the manganese in the solution will be oxidized into anode slime, that is, the main component of anode slim...

Claims

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Application Information

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IPC IPC(8): C25C1/16C25C7/06C22B47/00C22B7/00
CPCC25C1/16C25C7/06C22B47/00C22B7/006Y02P10/20
Inventor 王文军
Owner SHAOYANG UNIV
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