Some methods of cobalt extraction from dilute ammonia solutions
Authors:
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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- IlluvievaG. V. Application of ionites for extraction of some non-ferrous metals from dilute solutions. Proc. vuzov, Non-Ferrous Metallurgy, No. 2, 1963.
- Kasherininov G.O. Research of the process of ammonia leaching of cobalt from poor oxidized ores. Author's abstract of cand. diss., 1954.
- Materova E.A., Ehrenkrantz P.V. Exchange of nickel ions on sulfo-cationites. In the collection: Chromatography. PH LSU, 1956.
- Chernobrov S. M., Gorelik E. M. Application of Ionites in Hydrometallurgy of Nickel and Cobalt. Proc. of Gipronickel Institute, vol. 3, 1958.
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