METHOD OF PROCESSING GOLD ALLOY Russian patent published in 2000 - IPC

Abstract RU 2151210 C1

FIELD: precious metal technology. SUBSTANCE: method consisting granulation of alloy, leaching of granules with aqua-regia, separation of silver chloride cake, and precipitation of gold is distinguished by that, after leaching, pulp is diluted with water to residual acid concentration no higher than 3 M and by that gold is precipitated with sodium sulfite in two steps. EFFECT: avoided preliminary removal of nitric acid before precipitation of gold. 2 cl, 1 tbl, 8 ex

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RU 2 151 210 C1

Authors

Karpukhin A.I.

Stel'Kina I.I.

Medvedeva L.A.

Dement'Ev V.E.

Dates

2000-06-20—Published

1998-11-24—Filed