Anode changing method of electrolyzer

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...

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