Process for treating by-products of lithium/sulfur hexafluoride

Details Process for treating by-products of lithium/sulfur hexafluoride Process for treating by-products of lithium/sulfur hexafluoride

1995-07-07

1997-05-13

Langel, Wayne

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkali metal

423563, C01D 1500

Patent

active

056289740

ABSTRACT:
A process is provided for treating the solid reaction by-products of lith and sulfur hexafluoride. Lithium in the by-product solid waste is converted to lithium hydroxide. Lithium sulfide in the by-product is converted to lithium hydroxide. Lithium sulfide in the by-product is reacted with an acid to form a water soluble salt and hydrogen sulfide. The hydrogen sulfide is converted to an alkali metal sulfate. Solid aluminum oxide and lithium fluoride are recovered as a feed in the production of aluminum. Remaining lithium salts in solution are converted to lithium carbonate.

REFERENCES:
patent: 3523751 (1970-08-01), Burkert et al.
patent: 4655828 (1987-04-01), Yates et al.

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