METHOD FOR REGENERATION OF FLUORINE FROM ELECTROLYSIS- PRODUCED GASES IN ALUMINIUM INDUSTRY Russian patent published in 1995 - IPC

Abstract RU 2030486 C1

FIELD: chemical technology. SUBSTANCE: method involves introducing solutions of soluble compounds of lithium, calcium or magnesium into clarified solutions at a temperature of 20-90 C and a mass relation of fluorine to ions of Li, Ca and Mg equal to 60-100% from stoichiometrically required amount for forming fluorides of the above components. The invention is realized at factories engaged in producing secondary regeneration of cryolite with minimum capital investments for auxiliary equipment. EFFECT: higher extraction of fluorine in regeneration process and lower pollution of environment with fluoride compounds. 2 tbl

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RU 2 030 486 C1

Authors

Ignat'Ev O.S.

Bragazina O.A.

Palenko A.I.

Volkov I.V.

Dates

1995-03-10—Published

1992-12-29—Filed