FIELD: chemistry.
SUBSTANCE: cathode assembly of an aluminium electrolysis cell has a bottom made from bottom blocks with cathode rods. The cathode rods, which have a rectangular cross-section, have an electrodeposited copper coating which has a varying cross-section on the length, with increase in thickness of the coating from the periphery to the opposite end and coating of the blind end.
EFFECT: evening out of resistance on the length of a cathode rod, prevention of horizontal currents in the aluminium part of the cathode, uniform current distribution, reduced potential drop in the cathode and reduced consumption of electrical power on production of aluminium, longer service life of the assembly and electrolysis cell, higher grade of aluminium.
3 dwg
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Authors
Dates
2010-10-20—Published
2009-07-20—Filed