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Application

97109008/25, 1997-05-29

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Actual filing date

1997-05-29

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Published

1998-04-10

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Inventor

Draenkov A.N.Tatarintsev A.N.Kutilov V.A.Zvontsov B.F.Kovalev V.V.Karmannikov V.P.Klimenko M.A.Eljutin A.V.Fedulova T.V.Frolova I.V.Jurasova O.V.

(73)

Holder

Karmannikov Vladimir Pavlovich

METHOD OF RECOVERING AND PURIFYING PLATINUM GROUP METALS AND GOLD Russian patent published in 1998 - IPC

Abstract RU 2108294 C1

FIELD: precious metals recovery. SUBSTANCE: initial solution contains platinum metals, gold, and non-precious metal admixtures. First, iridium contained in solution is reduced into trivalent state and gold into metal. Gold and admixtures remaining in solution are extracted by tributyl phosphate and then the same agent is used to extract platinum. Thereafter, palladium is extracted with sulfoxide, e.g. dimethylsulfoxide or petroleum sulfoxide. To obtain pure gold, its extract is washed with hydrochloric acid solution. EFFECT: increased efficiency of recovery. 3 cl

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RU 2 108 294 C1

Authors

Draenkov A.N.

Tatarintsev A.N.

Kutilov V.A.

Zvontsov B.F.

Kovalev V.V.

Karmannikov V.P.

Klimenko M.A.

Eljutin A.V.

Fedulova T.V.

Frolova I.V.

Jurasova O.V.

Dates

1998-04-10—Published

1997-05-29—Filed

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