Recovery of cobalt and manganese from ash of residue from manufa

Details Recovery of cobalt and manganese from ash of residue from manufa Recovery of cobalt and manganese from ash of residue from manufa

1980-12-19

1981-12-29

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

423 49, 423 50, 423140, 423151, 75109, 75119, 252412, 252413, 252414, C01G 5108, C01G 4500

Patent

active

043082408

ABSTRACT:
Cobalt and manganese are recovered from incineration ash obtained by combustion of residue from the manufacture of trimellitic acid and its recovery as 4-carboxyphthalic anhydride and then the recovered cobalt is separated from the recovered manganese by magnetic separation. The foregoing is accomplished by extraction of the ash with an aqueous solution of hydrogen bromide or chloride, recovery of the extract solution, and the upward adjustment of its pH while adding powdered manganese to precipitate metallic cobalt for its separation by magnetic means.

REFERENCES:
patent: 2829170 (1958-04-01), Moore
patent: 3105851 (1963-10-01), Knobloch et al.
patent: 3341470 (1967-09-01), Hensley
patent: 3673154 (1972-06-01), Trevillyan
patent: 3880920 (1975-04-01), Wampfler
patent: 3940470 (1976-02-01), Kane et al.
patent: 3956175 (1976-05-01), Shigeyasu et al.
patent: 4228091 (1980-10-01), Partenheimer

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