Method for producing aluminum metal from aluminum trichloride

Details Method for producing aluminum metal from aluminum trichloride Method for producing aluminum metal from aluminum trichloride

1998-04-23

2000-05-23

Gorgos, Kathryn

Electrolysis: processes, compositions used therein, and methods

Electrolytic synthesis

Utilizing fused bath

205394, C25C 306

Patent

active

060662476

ABSTRACT:
A method is provided for the electrolytic production of aluminum metal from aluminum trichloride starting material. A molten electrolytic solution of mixed chloride-fluoride salts is formed in a reaction vessel into which the aluminum trichloride feed material is added. The fluoride component of the electrolyte reacts spontaneously with the aluminum trichloride, producing aluminum fluoride and a chloride salt. The aluminum fluoride is advantageously stored in a non-volatile state in solution in the electrolyte. The aluminum fluoride is then electrolytically reduced to yield aluminum metal and a fluoride salt.

REFERENCES:
patent: 3103472 (1963-09-01), Slatin
patent: 3518172 (1970-06-01), Layne et al.
patent: 3725222 (1973-04-01), Russell et al.

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