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1 649 815

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Application

4749419/02, 1989-10-11

(22)

Actual filing date

1989-10-11

(45)

Published

1995-01-09

(72)

Inventor

Balikov S.V.Dubinin N.A.Manokhin A.P.

METHOD OF NOBLE METALS EXTRACTION FROM GRAVITATIONAL CONCENTRATES Russian patent published in 1995 - IPC

Abstract SU 1649815 A1

FIELD: extraction of noble metals. SUBSTANCE: cinder melting of gravitational concentrate roasting is %: SiO2 26-33; Na2O 27-32; Fe2O3 27-32; FeO 3-4, and Al2O3 - the rest at the following ratio of components, wt.-%: cinder 29-32; soda 46-60; quartz 11-22. Reducing agent is above 100% of charge mass 1.0-1.6, and reducing agent consumption is maintained at the level 50-80% of stoichiometry of reduction reaction of Fe2O5 to FeO with solid carbon. Method involving the use of collectorless melting of gold-arsenic concentrate and scarification of basic hematite part containing in cinder of gravitational concentrate, decreased reducing agent consumption (up to 50-80% of stoichiometry) ensures to exclude litharge consumption and increase noble metals part in the gold-silver alloy. EFFECT: enhanced degree of noble metals concentration in alloy. 4 tbl

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SU 1 649 815 A1

Authors

Balikov S.V.

Dubinin N.A.

Manokhin A.P.

Dates

1995-01-09—Published

1989-10-11—Filed

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