C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/305, 53/308
C22B 3/30 (2006.01)
Patent
CA 1057507
ABSTRACT OF THE DISCLOSURE A process for recovering cobalt values from an aqueous ammoniacal solution containing dissolved cobalt and other metals as ammine sulphates with substantially all the dissolved cobalt being in cobaltic form. The solution is contacted with a water immiscible liquid ion exchange reagent dissolved in an inert organic diluent to selectively substantially completely extract the other metals from the solution and produce an organic extractant loaded with the other metals and an aqueous cobalt bearing raffinate substantially free of the other metals. The cobalt bearing raffinate is separated from the loaded organic extractant, the loaded organic extractant is washed to remove substantially all ammonia therefrom and the other metals are stripped from the washed organic extractant. The stripped organic extractant is washed with a wash liquid to remove metal value therefrom and, after washing the stripped organic extract- ant, the wash liquid is used to effect the washing of the loaded organic extractant, and the stripped and washed organic extractant is recycled to treat further solution.
234319
Wallace Herbert F.
Weir Donald R.
Na
Sherritt Gordon Mines Limited
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