Vapourmetallurgical process for the recovery of ultrapure...

Details Vapourmetallurgical process for the recovery of ultrapure... Vapourmetallurgical process for the recovery of ultrapure...

C - Chemistry, Metallurgy

22

B

53/310

C22B 23/06 (2006.01)

Patent

CA 1148365

PC-1196 Abstract of the Disclosure The invention is directed to the separation of nickel and cobalt contained in hydrometallurgical by-products such as hydrates and carbonates occurring in plants adapted to work up nickel, copper and cobalt ores wherein a slurry of the initial oxidized material is reduced by hydrogen under pressure in the presence of cobalt metal. The nickel content of the slurry is removed by pressure carbonylation and the remaining solution, after filtration to remove precipitated impurities, is acidified to produce cobalt hydridocarbonyl which is removed from the reaction mixture by sparging with a reducing gas and is collected.

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