CATHODE UNIT FOR ALUMINUM ELECTROLYZER Russian patent published in 2003 - IPC

FIELD: non- ferrous metallurgy; production of aluminum by electrolysis of molten salts from oxides; designing new and up-dating existing electrolyzers. SUBSTANCE: proposed cathode unit has casing, carbon hearth blocks, current supply elements and refractory plates located under carbon hearth blocks. Current supply elements are made in form of bent copper plates rigidly secured in longitudinal slots of blocks and over their boundary sections. Current supply elements have form of channel, angle of T- shaped profile in cross section. Number of slots in hearth block is no less than four. EFFECT: increased service life of cathode unit; reduced power requirements; improved quality of aluminum. 3 cl, 3 dwg, 1 tbl