Method of extracting gold and silver from an ore

Details Method of extracting gold and silver from an ore Method of extracting gold and silver from an ore

1983-08-12

1984-03-20

Meros, Edward J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 31, 75 99, 75105, 75118R, 204DIG13, C22B 1108

Patent

active

044380763

ABSTRACT:
Gold and/or silver is leached from comminuted ore with an alkaline cyanide lixiviant at a superatmospheric pressure of at least 25 bar and with high purity oxygen (at least 90% pure) to reduce the residence time at high yield.

REFERENCES:
patent: 1198011 (1916-09-01), Crowe
patent: 3443932 (1969-05-01), Melin et al.
patent: 4177068 (1979-12-01), Balakrishman et al.
patent: 4190436 (1980-02-01), Hughes
"Some Factors Influencing the Rate of Dissolution of Gold in Sodium Cyanide Solutions", pp. 55-60, (Canadian Article).
Lehrbuch der Metallhuttenkunde-by Dr. Ing. Victor Tafel et al., *Copy of Standard Research Report.
Article Entitled "The Gold-Dissolution Rate in Cyanide Solutions", by A. W. Fahrenwalt et al.
Principles of Extractive Metallurgy Fathi Habashi, vol. 2, pp. 15-16 and 24-30.

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