ELECTROLYSIS TANK USED FOR ALUMINUM ELECTROLYSIS AND ELECTROLYSIS PROCESS USING THE ELECTROLYZER

摘要

An electrolysis tank used for aluminum electrolysis comprising a tank body an anode and a cathode arranged within the tank body also an electrolyte accommodated within the tank body where at least a part of the anode is submerged in the electrolyte. The anode is arranged above the tank body. The cathode is arranged at the tank bottom and is covered by a certain amount of liquid aluminum. The electrolyte is provided between the anode and the cathode. The electrolyte covers the liquid aluminum. The tank body has arranged on an inner sidewall thereof an insulation layer for use in separating oxygen or the electrolyte from a carbon block. The tank is characterized in that: the constituents of the anode comprise Fe Cu Ni and Sn where Fe and Cu are the main constituents; the electrolyte consists of 30 to 38 wt% of NaF 49 to 60 wt% of AlF 1 to 5 wt% of LiF 1 to 6 wt% of KF and 3 to 6 wt% of AlO where the molar ratio of NaF to AlF is between 1.0 and 1.52. The electrolysis tank is applicable in industrialized production of electrolyzed aluminum.