METHOD FOR PROCESSING PLACER GOLD Russian patent published in 1998 - IPC

Abstract RU 2112062 C1

FIELD: refining of noble metals. SUBSTANCE: feedstock material is melted to obtain natural gold/silver alloy, followed by granulating and leaching it in aqua regia solution. Method is intentively novel in that, prior to melting alloy, copper is added to it in the amount of 10-60% based on silver weight. EFFECT: increased gold recovery into solution. 2 tbl

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RU 2 112 062 C1

Authors

Karpukhin A.I.

Stel'Kina I.I.

Rybkin S.G.

Dates

1998-05-27—Published

1996-07-15—Filed