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Anode changing method of electrolyzer

An electrolytic cell and anode technology, applied in the field of aluminum electrolysis, can solve the problems of electrolyte splash in the electrolytic cell, affecting the stability of the electrolytic cell, reducing the current efficiency, etc. The effect of increased material consumption

Inactive Publication Date: 2012-10-24
SNTO TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the process of installing cold and wet new anodes into the electrolyzer, electrolyte splashing in the electrolyzer often occurs, and a "needle vibration" phenomenon occurs, which affects the stability of the electrolyzer and reduces the current efficiency

Method used

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Examples

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Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them.

[0018] In the embodiment of the present invention, by installing a high-temperature hot anode with a temperature of 50-500°C into the predetermined position of the electrolytic cell, the adverse effects caused by the cold anode are reduced, which not only reduces the energy loss of the electrolytic cell, reduces the iron-carbon pressure drop, and reduces the "needle Vibration phenomenon, enhance the stability of the electrolytic cell, improve the conductivity of the anode, and reduce the probability of cracking of the anode in the electrolytic cell. The following are specific examples.

[0019] Step 1: Take the hot anode out of the anode roaster.

[0020] Before the anode is used in the upper electrolytic cell, it needs to be roasted for ...

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Abstract

The invention discloses an anode changing method of an electrolyzer. The method comprises the steps of: removing a residual electrode ; and arranging a heated new anode at a temperature of 50-500 DEG C into the electrolyzer. Compared with direct usage of a cold wet anode in the electrolyzer, the heated anode can reduce frequency of ''needle vibration'' of the electrolyzer, improve stability of the electrolyzer, reduce Fe-C pressure drop of the anode and improve anode conductivity, so as to realize the electrolyzer production with high efficiency and low consumption.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolysis, in particular to a pole changing method for an electrolytic cell. Background technique [0002] In the production of aluminum electrolysis, the service life of each group of prebaked anodes is about 28-36 days. Therefore, when the life of the prebaked anodes expires, it is necessary to take out the residual anodes and reinstall new anodes. This process is anode replacement, referred to as pole replacement. , Changing is one of the daily operations of electrolytic production. The specific steps of changing poles are: when the anode is consumed to a certain height, take it out from the aluminum electrolytic cell at about 950°C, and replace it with a new set of cold and wet anodes at room temperature. [0003] During the process of installing cold and wet new anodes into the electrolyzer, electrolyte splashing in the electrolyzer often occurs, and a "needle vibration" phenomenon occur...

Claims

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Application Information

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IPC IPC(8): C25C3/12
Inventor 张煜刘国华叶武龙高小明龚克成张平
Owner SNTO TECH GRP
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