Molten salt bath for electrolytic production of aluminum

Details Molten salt bath for electrolytic production of aluminum Molten salt bath for electrolytic production of aluminum

1982-09-27

1984-04-03

Ozaki, G.

Chemistry: electrical and wave energy

Processes and products

C25C 306

Patent

active

044406100

ABSTRACT:
An improved process for the electrolytic production of aluminum by electrolysis of aluminum chloride in a molten salt electrolyte bath. The improved process is characterized by a reduction in solubility of the reduced aluminum metal as well as a smaller metal droplet size permitting closer anode-cathode spacing in the electrolysis cell and a lower electrical resistance. The improvement comprises performing the electrolysis in an electrolyte consisting essentially of from 0.5 to 15 wt. % aluminum chloride, from 0.5 to 40 wt. % of one or more alkaline earth metal chlorides selected from the class consisting of magnesium chloride, barium chloride, strontium chloride and calcium chloride, from 10 to 90 wt. % lithium chloride and the balance sodium chloride.

REFERENCES:
patent: 3755099 (1973-08-01), Haupin
patent: 3822195 (1974-07-01), Dell et al.
patent: 4133727 (1979-01-01), Rogers, Jr.
patent: 4135994 (1979-01-01), Ishikawa et al.

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