Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1995-09-26
1997-09-16
Simmons, David A.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75735, 75737, 423 29, C22B 312, C22B 320, C22B 1108, C22B 1514
Patent
active
056675577
ABSTRACT:
A hydrometallurgical process for treating copper feed materials containing gold and/or silver by simultaneously leaching copper, gold and/or silver into an aqueous cyanide solution, recovering copper in metallic form by electrowinning and regenerating cyanide ions is provided, wherein high current efficiencies are achieved at high current densities and at low copper concentrations.
REFERENCES:
patent: 3463710 (1969-08-01), Lower
patent: 5411575 (1995-05-01), Fleming et al.
F.H. Chapman "Electrolysis", SME Mineral Processing Handbook, v. 2, N.L. Weiss ed., American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc., New York, pp. 13-59--13-67 1985.
Scerescini, B. "The Mt. Gibson Process". AMMTEC Pty Ltd. Processing of Gold-Copper Ores (Practical Aspects): Jul. 4, 1991, pp. 39-41.
LaBrooy, S.R. "Copper-Gold Ore Treatment Options and Status" Randol Gold Forum Vancouver '92, Randol International: Golden, Co. pp. 173-177.
Muir, D.M., LaBroy, S.R., Fenton, K.. "Processing Copper-Gold Ores with Ammonia or Ammonia-Cyanide Solutions". World Gold '91, Australia. pp. 145-150.
Fleming Christopher Andrew
Grot Walther G.
Thorpe John Anton
E. I. Du Pont de Nemours and Company
Frank George A.
Lorengo J. A.
Simmons David A.
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