METHOD OF SEPARATION OF NOBLE AND NON-FERROUS METALS Russian patent published in 2004 - IPC

Abstract RU 2221884 C1

FIELD: metallurgy of noble metals; processing raw material at high content of non-noble admixtures. SUBSTANCE: proposed method includes pulping of material in water, treatment of pulp by nitric acid to oxidation-reduction potential of 600-700 mV, separation of washing-off of not dissolved materials, chlorination on hydrochloric acid, filtration of pulp, neutralization of hydrochloric acid solution and separation of sediment of admixtures. EFFECT: enhanced degree of separation of noble metals and admixtures. 2 ex

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RU 2 221 884 C1

Authors

Malakhov V.F.

Koritskaja N.G.

Moskalev A.V.

Dates

2004-01-20—Published

2002-04-22—Filed