NOUFERROUS METALLURGICAL EQUIPMENT

This paper investigates the change of vanadium content of trace elements in the production process of 500kA aluminum electrolyzer and its effect on current efficiency, aiming at optimizing the production process and improving current efficiency and product quality. Through theoretical calculations and plant experiments, it is found that the increase of vanadium content will significantly increase the resistivity of the electrolyte, and then reduce the current efficiency. Based on this, the study proposes the following optimization measures in conjunction with production practice: (1) strictly control the vanadium content of alumina raw materials; (2) improve the design of electrolytic cell and anode to reduce the influence of impurities; and (3) optimize the composition of the electrolyte to maintain a reasonable level of vanadium content. The results of the study show that the adoption of the above measures can effectively enhance the current efficiency and improve the economy and stability of aluminum electrolysis production.