China Aluminum Qinghai Branch Developed Lithium Anode for Aluminum Electrolysis

Chalco Qinghai Branch recently developed a 160kA lithium salt anode for aluminum electrolysis and put it into use. Anode dregs and excessive consumption are among the concerns of the electrolysis industry. Through research, it has been found that the main reason is that the anode undergoes a redox reaction with O2 and CO2 gases in the electrolytic cell, which intensifies the anode consumption, and at the same time causes the carbon particles in the anode to fall off, resulting in a large amount of carbon slag, which jeopardizes the conditions of electrolytic working conditions. Increases the labor intensity of the electrolysis workers during slag removal. The addition of a certain amount of lithium salt additive to the anode is one of the research approaches to reduce the excessive consumption of the anode. This method can suppress the oxidation-reduction reaction of the anode in the electrolysis cell with O2, CO2 gas and reduce the excessive consumption of the carbon anode. This method is in the experiment. Room has been proven. Qinghai Branch introduced the method into actual production in the homogeneous high-quality anode project. In addition to the determination of the amount of material to be added, the location of the addition, and the development of a feeding device, the engineers and technicians have also passed several experiments to break through the technical problems of unstable and discontinuous feeding. On July 29, the company successfully developed the first lithium salt anode. To date, the company has produced 550 lithium salt anodes with a pass rate of 99.31%.