Method for decreasing level current of electrolytic cell

Abstract

The invention relates to a method for decreasing level current of an electrolytic cell. Electric diversion materials are laid on a cathode, a steel bar or between the cathode and the steel bar. The electric diversion materials can select different resistance values according to actual demands, and distribution of cathode carbon block resistance is adjusted, and so the current in an aluminum liquid can go into the cathode uniformly. The method is advantageous in that the resistance distribution can be changed effectively, the level current in an aluminum liquid can be decreased, the stability of the electrolytic cell can be raised, the current efficiency can be raised and the service life of the electrolytic cell can be prolonged.

Description

technical field [0001] The invention relates to the field of electrolysis, in particular to a method for reducing the horizontal current of an electrolyzer. Background technique [0002] In a traditional electrolytic cell, the current enters the cell downward through the anode, passes through the molten electrolyte and aluminum liquid, reaches the cathode carbon block, and then passes through the carbon block and the steel rod connected by the cathode and embedded horizontally in the cathode carbon block from both sides of the electrolytic cell. side out, through the cathode busbar into the next slot. Under this structure, since the current will always flow through the path with the least resistance, the third part of the outlet side close to the steel bar loads most of the current, resulting in a large amount of horizontal current in the aluminum liquid layer, and the aluminum liquid layer And the current distribution of the cathode carbon block is uneven, and the closer t...

AI Technical Summary

Problems solved by technology

However, the large horizontal current in the aluminum liquid will generate electromagnetic force under the action of the magnetic field, which will increase the instability of the electrolytic cell, reduce the current efficiency, and increase the power consumption; the uneven current distribution in the cathode carbon block will cause the carbon block to be corroded , reducing the lifetime of the slot

At present, with the enlargement of the electrolytic cell and the increase of the width of the electrolytic cell, there will only be more liquid aluminum horizontal current and uneven cathode current distribution.