Upgrade Practice on 330 kA Aluminum Reduction Cell Line

China's aluminum reduction industry faces strict energy consumption and environmental protection challenges.In response, an enterprise upgraded and optimized its 330 kA aluminum reduction cell, initially commissioned years ago.By analyzing issues related to magnetic field distribution, cathode structure, lining design, and upper cell structure, they proposed several enhancement measurements.Using new technologies to optimize the busbar magnetic field significantly improved the magnetohydrodynamic stability of the cells.The introduction of graphitized cathode blocks reduced cathode voltage drop and horizontal current in the aluminum liquid.Additionally, improvements in the cell lining insulation and gas collection efficiency of cell upper structure were made.The upgraded cell line now operates at a higher current and have significantly lower energy consumption, with a reduction of about 692 kWh per ton of aluminum.This results in an annual energy savings of approximately 187 million kWh and an increase in aluminum production by about 20,000 tons.