IMPROVEMENTS IN ALUMINIUM SMELTING CELLS

摘要

An aluminium smelting cell comprising a cathode having an active upper surface (30), a plurality of anodes (50) each having a lower surface (60) spaced from the upper surface (30) of the cathode, said cathode upper surface being sloped at an acute angle in a primary or longitudinal direction of each anode, and being formed with pairs (31),(32) of oppositely sloped surfaces extending in a transverse or secondary direction under each anode to cause complementary shaping of the lower anode surfaces to reduce the migration of bubbles between the anode and cathode along the anode surfaces in said primary or longitudinal direction to thereby reduce the path length of said bubbles whereby the turbulence caused by coalesced bubble disengagement from the bath electrolyte is significantly reduced while maintaining adequate bath circulation between the anode and cathode.