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2 086 685

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Application

95121173/02, 1995-12-14

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Actual filing date

1995-12-14

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Published

1997-08-10

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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.Maslennikov V.S.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Zavod Po Obrabotke Tsvetnykh Metallov"

METHOD FOR PYROMETALLURGICAL REFINING GOLD- AND SILVER-CONTAINING WASTES Russian patent published in 1997 - IPC

Abstract RU 2086685 C1

FIELD: gold recovery. SUBSTANCE: method includes smelting initial material and two consecutive smeltings at temperature ranged from 1100 to 1200 C. In the first step, oxidative smelting is performed with introducing into smelt oxygen-containing gas for 20-25 min, and, in the second step, reductive smelting is carried out with introducing reductive gas into smelt for at least 30 min, ratio of metal surface area to smelt weight being maintained within 0.06 to 0.07. EFFECT: increased smelt refinement degree and elevated mechanical characteristics of precious metal alloys. 4 tbl

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RU 2 086 685 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.

Maslennikov V.S.

Dates

1997-08-10—Published

1995-12-14—Filed

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