Some methods of cobalt extraction from dilute ammonia solutions
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Abstract
The advantage of ammonia leaching of cobalt-bearing ores after reduction roasting is the possibility of almost complete separation of iron. However, the concentration of cobalt in solution after ammonia leaching of poor ores is very low, which causes difficulties in their further processing.Precipitation of cobalt from ammonia solution in the form of sulfide. The solubility of cobalt sulfide in ammonia solutions is negligible, so when sulfides Na2S, (NH4)2S are introduced into solution, cobalt ammoniacates are destroyed and metal sulfide is precipitated.
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References
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