The invention discloses a
cathode bus-bar configuration method of an ultra-large aluminum
electrolytic cell. The total quantity of end compensating current is rated and
cell bottom
bus-bars adopt alternate compensation for offset, that is, the
total current quantity flowing through a
flue end is controlled within 100-150 kA, the current quantity of an aluminum
discharge end is controlled within 80-120 kA, and the rest current on the A side bypasses the multiple
cell bottom
bus-bars. The routing manner of
cathode bus-bars is designed accordingly, and specific parameters of
cathode bus-bars of the
electrolytic cell, independent compensation bus-bars,
cell spacing and
plant spacing are determined according to the
calculated result of a magnetic fluid model. With the adoption of the cathode bus-bar configuration method of the ultra-large aluminum
electrolytic cell, basic configuration of the bus-bars of the ultra-large aluminum electrolytic cell can be determined quickly, the vertical
magnetic field and the horizontal
magnetic field of melt can be effectively reduced, uniform distribution of the magnetic fields in the
long axis direction of the cell is realized, stable operation of the aluminum electrolytic cell is realized, and the current efficiency of the electrolytic cell is improved.