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2 023 729

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IPC

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Application

5054011/02, 1992-07-13

(22)

Actual filing date

1992-07-13

(45)

Published

1994-11-30

(72)

Inventor

Khmel'Nitskaja O.D.Mullov V.M.Panchenko A.F.

(73)

Holder

Irkutskij Gosudarstvennyj Nauchno-Issledovatel'Skij Institut Redkikh I Tsvetnykh Metallov

METHOD FOR REPROCESSING GOLD-BEARING SULFIDE CONCENTRATES Russian patent published in 1994 - IPC

Abstract RU 2023729 C1

FIELD: nonferrous metallurgy, particularly, methods for extracting noble metals. SUBSTANCE: this method of reprocessing gold-bearing sulfide concentrates prescribes bacterially leaching sulfides, cyaniding cakes resulted from bacterial lixiviation, conducting bacterial lixiviation until degree of oxidation of sulfides attains level of 45 to 60 %, and subjecting bacterial lixiviation cakes to floatational concentration of sulfides prior to cyaniding with returning concentrate to bacterial lixiviation section. EFFECT: higher yield.

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RU 2 023 729 C1

Authors

Khmel'Nitskaja O.D.

Mullov V.M.

Panchenko A.F.

Dates

1994-11-30—Published

1992-07-13—Filed

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