Process for production of CoCl.sub.2 solution from cobaltic oxid

Details Process for production of CoCl.sub.2 solution from cobaltic oxid Process for production of CoCl.sub.2 solution from cobaltic oxid

1981-05-04

1983-07-19

Thomas, Earl C.

Chemistry of inorganic compounds

Halogen or compound thereof

Binary compound containing metal

423150, 204112, C01G 5308

Patent

active

043943667

ABSTRACT:
This invention is concerned with a process for dissolving oxidic trivalent cobalt compounds in hydrochloric acid while avoiding the generation of chlorine. It includes the following steps (a) slurrying in water the trivalent cobalt compound to be dissolved and (b) treating the resulting slurry with a reduction agent from the group consisting of methanol, formaldehyde and formic acid and with hydrochloric acid. The contact of the hydrochloric acid with the slurry should occur in the presence of the reducing agent. The rate of acid addition should be controlled to maintain the slurry at a pH above 1.

REFERENCES:
patent: 2415665 (1947-02-01), Wallis et al.
patent: 4151258 (1979-04-01), Crnojevich et al.
patent: 4274930 (1981-06-01), Ettel et al.
Syper, "Oxidation of Some Organic Compounds by Cobalt (III) Hydroxide", Roczniki Chemii, vol. 47, pp. 43-48, 1973.
Mellor, "A Comprehensive Treatise on Inorganic and Theoretical Chemistry", Longmans, Green & Co., New York, vol. 14, 1935, p. 653.

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