Process for the selective dissolution of cobalt from...

Details Process for the selective dissolution of cobalt from... Process for the selective dissolution of cobalt from...

C - Chemistry, Metallurgy

22

B

53/303

C22B 23/04 (1985.01)

Patent

CA 1193107

ABSTRACT OF THE DISCLOSURE: A hydrometallurgical process for the recovery of cobalt from cobaltite-pyrite concentrates containing substantial amounts of cobalt, arsenic, iron and sulphur is disclosed. The hydrometallurgical process comprises pressure leaching of the cobaltite-pyrite concentrates with a sodium chloride or sodium sulphate solution at a temperature in the range of 130-160°C and under oxygen partial pressures in the range of 75-200 psi to solubilize at least 90% of the cobalt content, while simultaneously precipitating most of the iron and arsenic as jarosite and ferric arsenate.

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