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2 202 636

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IPC

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Application

2001124280/02, 2001-08-28

(24)

Start date

2001-08-28

(22)

Actual filing date

2001-08-28

(45)

Published

2003-04-20

(72)

Inventor

Vorob'Ev-Desjatovskij N.V.Matsura V.A.Potekhin V.V.Ukraintsev V.B.Ukraintsev I.V.

(73)

Holder

Vorob'Ev-Desjatovskij Nikolaj VladimirovichMatsura Viktor AleksandrovichPotekhin Vjacheslav VjacheslavovichUkraintsev Valerij BorisovichUkraintsev Il'Ja Valer'Evich

METHOD OF EXTRACTION OF COLD SILVER FROM ORES Russian patent published in 2003 - IPC

Abstract RU 2202636 C1

FIELD: hydrometallurgy. SUBSTANCE: invention can be used at one of gold and sliver extraction stages, namely, at extraction of gold and silver from ores. According to invention, gold or silver is extracted from ores by treatment of ores with sodium cyanide in presents of oxygen of air with use of alcohols or nitriles or dimethyl formamide or their mixtures as solvent. EFFECT: improved efficiency of process owing to reduction of losses of precious metals, and facilitated separation of productive solutions from leached ore. 1 tbl

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RU 2 202 636 C1

Authors

Vorob'Ev-Desjatovskij N.V.

Matsura V.A.

Potekhin V.V.

Ukraintsev V.B.

Ukraintsev I.V.

Dates

2003-04-20—Published

2001-08-28—Filed