Reclaiming spent potlining

Details Reclaiming spent potlining Reclaiming spent potlining

1985-02-20

1989-12-26

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423460, 423461, 423489, 423556, C01B 3102

Patent

active

048896950

ABSTRACT:
Disclosed in a process for recovering aluminum flouride, caustic, and carbon from spent potlining retrieved from an aluminum electrolytic reduction cell. Spent potlining is treated by leaching with a caustic solution to produce a fluoride-rich basic liquor and carbonaceous solid residue followed by contacting the carbonaceous solid with an acid bath of aluminum sulfate and sulfuric acid to produce a fluoride-rich acid liquor.

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Chemical Engineers' Handbook, 5th ed. Ed. by Perry & Chilton, McGraw-Hill Book. Co., 1973 pp. 21-66.
Blayden, Lee C. and Epstein, Seymour G., "Spent Potlining Symposium," Journal of Metals, vol. 36, No. 7, Jul. 1984.

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