Method for increasing discharging uniformity of aluminum oxide of aluminum cell

The invention provides a method for increasing the discharging uniformity of aluminum oxide of an aluminum cell and relates to the improvement of adischargingmethod of a pre-baked aluminum cell. The method is characterized in that a guide pipe is arranged at a discharging port of an aluminum oxide constant volume blanker in a discharging process; a plurality of branchdischarging pipes are arranged at the lower end of the guide pipe; horn-shaped dischargingfunnels are connected with the lower ends of the branch discharging pipes; and aluminum oxide passes through the guide pipe, the discharging pipes and the dischargingfunnels and then enters electrolyte. According to the method provided by the invention, the discharging uniformity of aluminum oxide of the aluminum cell is increased by increasing the number ofdischarging points, reducing the one-timedischargingvolume of thedischarging points and increasing the dischargingand dispersion area of the aluminum oxide according to the approaching feeding principle. Compared with the present pre-baked cell shell-striking dischargingmethod, the method has the advantages that no shell-striking hammer is arranged, the guide pipe, the dischargingpipes and an opening disperser are directly arranged, the quantity of the discharging points of one cell is above two times of the quantity of the presentdischargingpoints of one cell, thedischarging volume of the dischargingpoints is greatly reduced, the discharginguniformity of aluminum oxide of the aluminum cell is increased, the uniform distribution of the aluminum oxide concentration in the cell is benefited, the generation of sediment and anode effects is avoided, and the energy consumption of the electrolytic cell and the greenhouse gas emission are reduced.