Production of cathode blocks, used for the electrolytic recovery of aluminum, comprises graphitizing carbonized cathode blocks in the longitudinal direction by inductively heating the cathode blocks in the center

摘要

Production of cathode blocks comprises graphitizing carbonized cathode blocks in the longitudinal direction by inductively heating the cathode blocks in the center. Preferably the length of the zone to be inductively heated is 25-90, preferably 35-80, especially 10-100% of the length of the block.