NOUFERROUS METALLURGICAL EQUIPMENT

This paper presents the production principles of aluminum electrolytic cells and the meaning of extending cell liner service life. The 400kA graphitized aluminum electrolytic cell of a company is taken as an example to analyze the characteristics of graphitized cathode and corrosion mechanism and put forward reasonable and suitable technical conditions for electrolysis, as well as innovative materials and methods for repairing corrosion pits, which can slow down the flow rate of molten aluminum and increase heat dissipation. When the bottom of the furnace is relatively cold, a protective layer will grow on and repair the bottom of the furnace to protect the cathode and prolong the service life of the cell. The annual benefit can be increased by 199.92 million RMB, and the solid hazardous waste can be reduced by 15960t, achieving good economic and environmental benefits.