Slag decarbonization with a phase inversion

Details Slag decarbonization with a phase inversion Slag decarbonization with a phase inversion

1982-05-06

1983-10-11

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 63, 75 68A, 75 93AC, C22B 402, C22B 2102

Patent

active

044090218

ABSTRACT:
A batch method is described for decarbonizing aluminum primary furnace product from an aluminum carbide content of up to about 35% to a useful content of about 2% Al.sub.4 C.sub.3. The method maximizes mass transfer of the aluminum carbide from molten primary furnace product to molten slag and molten alumina in a decarbonization furnace which has elevatable electrodes and is operated in the extraction mode according to the equation:

REFERENCES:
patent: 4216010 (1980-08-01), Kibby
patent: 4224054 (1980-09-01), Southam

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