Process for the enhanced production of silver from gold and silv

Details Process for the enhanced production of silver from gold and silv Process for the enhanced production of silver from gold and silv

1990-07-25

1991-07-23

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

C01G 500

Patent

active

050340557

ABSTRACT:
There is disclosed a process for recovering gold and silver values from ore using activated carbon for adsorbing the values, wherein the activated carbon is treated with a suitable oxidant having an oxidation potential higher than that of oxygen. A preferred oxidant is potassium permanganate. Activated carbon so treated has an enhanced affinity for adsorbing silver, even under conditions which traditionally have favored loading of carbon with gold.

REFERENCES:
patent: 4816235 (1989-03-01), Pesic
Rowson, J. W., Melis, L. A.: Operation of a Gold Extraction Circuit for Recovery of Gold from Uranium Mill Tailings at Cluff Lake, Saskatchewan; CIM Bulletin, vol. 82, No. 931, pp. 40-46, Nov. 1989.
Fleming, C. A.: Professional Development Carbon-in-Pulp Seminar, 26th Annual Conference of Metallurgists, Winnipeg, Manitoba, Aug. 1987; Canadian Institute of Mining and Metallurgy; vol. I, pp. 49-51.

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