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Processing gold ores using heap leach-carbon adsorption methods.

Authors
Heinen-HJ; Peterson-DG; Lindstrom-RE
Source
Reno, NV: U.S. Department of the Interior, Bureau of Mines, IC 8770, 1978 Jan; :1-21
NIOSHTIC No.
10007944
Abstract
This Bureau of Mines report reviews the recent developments in the heap leaching of gold ores with dilute cyanide solutions and the recovery of gold and associated silver from the pregnant effluents by a carbon adsorption-desorption method. Mineralogical considerations, experimental work, field studies, and commercial operations are described. Also presented are recent process advances developed by the Bureau, including the application of alcohol additives to the conventional hot alkaline cyanide strip solution to enhance gold desorption from precious metal-laden activated carbon, and Na2S precipitation of the silver from gold- silver cyanide solutions as a means of reducing the inventory of carbon required for precious-metal adsorption from heap leach effluents and for the production of low-silver bullion from activated carbon stripping solutions.
Keywords
Mining-industry; Mineral-processing; Gold-mines; Metal-refining; Metallurgical-processes; Metals
Publication Date
19780101
Document Type
IH; Information Circular
Fiscal Year
1978
NTIS Accession No.
PB-280177
NTIS Price
A03
Identifying No.
IC-8770
NIOSH Division
RERC
Source Name
Reno, NV: U.S. Department of the Interior, Bureau of Mines, IC 8770
State
NV
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