Utilization of oxygen in leaching and/or recovery procedures emp

Details Utilization of oxygen in leaching and/or recovery procedures emp Utilization of oxygen in leaching and/or recovery procedures emp

1988-09-22

1993-07-20

Lewis, Michael

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 30, 423 31, C22B 1100

Patent

active

052290859

ABSTRACT:
In gold and/or silver cyanide leaching-adsorption processes employing solid adsorbents such as activated charcoal, the overall efficiency in the recovery of gold and/or silver from ores or the like is greatly increased by contacting the cyanide slurry containing the gold and/or silver, with oxygen gas instead of normal air. A generally pure oxygen gas can be bubbled into a vessel containing the slurry, and a cover (e.g. a floating cover) may be provided on the vessel to reduce the oxygen transfer out of the solution and to facilitate pressurization of the system with an oxygen atmosphere. The procedures of the invention are applicable to carbon-in-pulp (CIP), and carbon-in-leach (CIL) processes and related processes using resins. Deaeration of the ore slurry can be practiced prior to the introduction of the oxygen.

REFERENCES:
patent: 1734306 (1929-11-01), Schraps
patent: 4289532 (1981-09-01), Matson et al.
patent: 4438076 (1984-03-01), Pietsch et al.
patent: 4501721 (1985-02-01), Sherman et al.
patent: 4552589 (1985-11-01), Mason et al.
patent: 4754953 (1988-07-01), Brison et al.
patent: 4816234 (1989-03-01), Brison et al.
"Studies on the Mechanism of Gold Adsorption on Carbon", Tsuchida et al., pp. 647-656, Mineral Chem. Res. Unit, Murdoch Univ., Perth, W. Australia, 1984.
"Aspects of Laboratory and Pilot Plant Evaluation of CIP with Relation to Gold Recovery", Davidson et al., XIV Inter. Mining Processing Congress, Oct. 17-23, 1982.
"Recovery of Gold from Carbonaceous Ores at Carlin, Nevada", Guay et al., Society of Mining Engineers, AIME, Transactions-vol. 254, Mar. 1973.
"The Treatment of Refractory Gold-Bearing Flotation Concentrates Using Pressure Leaching Techniques", Muir et al., Proc. AIME Meeting, Los Angeles, Calif., Feb. 1984.

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