Protective collar for anode spade pin

Details Protective collar for anode spade pin Protective collar for anode spade pin

1986-02-07

1987-08-18

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204243R, C25C 308

Patent

active

046875662

ABSTRACT:
A collar for protecting the iron spade of an anode rod for a carbon block that serves as an anode in the electrolytic production of aluminum comprises a plurality of shaped carbon blocks each with two close-fitting, abutting end faces and recesses which jointly correspond in cross-section to that of the anode spade or pin and surround the anode spade or pin projecting out of the anode block; the base areas of the said carbon collar blocks form a plane which is in contact with the carbon anode. The shaped carbon blocks are manufactured out of 60-90 wt % carbonaceous solids and 10-40 wt % bitumen binder. Because of their low pore volume the protective collars exhibit a low absorption capacity for sodium and a favorable combustion behavior during the electrolytic process.

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