阴极系统优化对400kA铝电解槽铝液-电解质界面波动影响的数值模拟研究OA

This study focuses on a 400 kA aluminum electrolysis cell and evaluates three optimization schemes through numerical simulation:increasing the aluminum level,embedding cathode steel bars into copper bars,and constructing a sloping cathode.The simulation results show that the combined scheme achieves the best effect,reducing the horizontal current density at 4 cm below the aluminum liquid interface from 8831 A/m2 to 5920 A/m2,decreasing the maximum value of the vertical magnetic field Bz,reducing the maximum flow velocity of the aluminum liquid from 0.179 m/s to 0.146 m/s,and lowering the interface bulge height from 2.35 cm to 1.75 cm.The optimization effectively suppresses aluminum liquid fluctuation by weakening electromagnetic forces and homogenizes the current distribution,providing a theoretical basis for the energy-saving and efficient operation of the electrolysis cell.