NIOSHTIC-2 Publications Search

Recovery of gold from arsenopyrite concentrates by cyanidation-carbon adsorption.

Authors
Heinen HJ; McClelland GE; Lindstrom RE
Source
Reno, NV: U.S. Department of the Interior, Bureau of Mines, RI 8458, 1980 Jan; :1-10
NIOSHTIC No.
10006857
Abstract
The Bureau of Mines investigated a cyanidation-carbon adsorption technique for extracting gold from arsenopyrite concentrates. Agitation leach experiments were conducted on 85-pct minus 35-mesh gravity concentrates containing 21.8 Oz gold and 6.4 Oz silver per ton. Results obtained in leaching the concentrates showed that 96.9 pct gold and 90.7 pct silver extraction could be achieved in 96 hours of agitation. Gold and silver were recovered from the resulting pregnant solution by exposure to granular activated carbon in a countercurrent system. Carbon loadings of 2,556 oz of gold and 502 oz of silver per ton were achieved. These loadings are significantly higher than heretofore thought practical.
Keywords
Gold; Extractive metallurgy; Cyaniding; Beneficiation; Leaching; Pyrite; Silver; Activated carbon; Carbon adsorption; Arsenopyrite
Publication Date
19800101
Document Type
IH; Report of Investigations
Fiscal Year
1980
NTIS Accession No.
PB81-150013
Identifying No.
RI 8458
NIOSH Division
RERC
Source Name
Reno, NV: U.S. Department of the Interior, Bureau of Mines, RI 8458
State
NV
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division