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2 092 598

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C1

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IPC

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Application

95117844/02, 1995-10-18

(22)

Actual filing date

1995-10-18

(45)

Published

1997-10-10

(72)

Inventor

Lapitskaja E.V.Vasekin V.V.Tykochinskij D.S.Rytvin E.E.

(73)

Holder

Nauchno-Proizvodstvennyj Kompleks

METHOD OF PROCESSING NOBLE METALS AND THEIR ALLOYS Russian patent published in 1997 - IPC

Abstract RU 2092598 C1

FIELD: refining of noble metal alloys. SUBSTANCE: this can be used for quick solving of noble metal alloys based on platinum with high content of rhodium - in excess of 10-15 mass %. According to method of processing noble metals and their alloys basically containing rhodium, primary material is preliminarily subjected to electroerosion dispersion, then solving is performed, initially by means of aqua regia and afterwards by solution of aqua regia with addition of 0.2-3.0 mass % of hydrogen peroxide up to discontinuation of emitting nitrogen oxides. EFFECT: high efficiency. 1 tbl

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RU 2 092 598 C1

Authors

Lapitskaja E.V.

Vasekin V.V.

Tykochinskij D.S.

Rytvin E.E.

Dates

1997-10-10—Published

1995-10-18—Filed

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