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2 090 638

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Application

95109803/02, 1995-06-14

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Actual filing date

1995-06-14

(45)

Published

1997-09-20

(72)

Inventor

Ermakov A.V.Sivkov M.N.Nikiforov S.V.Mazaletskij A.G.Gorbatova L.D.Dmitriev V.A.Matjukhin P.A.Afanas'Ev O.Ju.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Zavod Po Obrabotke Tsvetnykh Metallov"

METHOD OF PROCESSING PRECIOUS METAL-CONTAINING WASTES Russian patent published in 1997 - IPC

Abstract RU 2090638 C1

FIELD: precious metals recovery. SUBSTANCE: invention focuses on pyrometallurgical processing of gold and silver-containing wastes. Initial material is fused with copper component added in quantity providing increase in partial pressure of vapor of harmful impurities over the fused material. Fused material is evacuated to 10-1-10-2 mm Hg and kept at 1100-1200 C under stirring for 20-30 min. According to invention, process is carried out in protective atmosphere. EFFECT: increased purification degree of precious metals and reduced process duration. 3 tbl

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RU 2 090 638 C1

Authors

Ermakov A.V.

Sivkov M.N.

Nikiforov S.V.

Mazaletskij A.G.

Gorbatova L.D.

Dmitriev V.A.

Matjukhin P.A.

Afanas'Ev O.Ju.

Dates

1997-09-20—Published

1995-06-14—Filed

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