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Copper exchange capacity of clays and their potential effect on in situ copper leaching.

Authors
Gomer-JS; Yopps-SW; Sandoval-SP; Clark-AE
Source
Reno, NV: U.S. Department of the Interior, Bureau of Mines, RI 9396, 1992 Jan; :1-11
NIOSHTIC No.
10011115
Abstract
The U.S. Bureau of Mines conducted Cu exchange tests for six common clays under simulated in situ leaching conditions. Regression equations were obtained from the data expressing the Cu exchange capacity as a function of Cu concentration, pH, and temperature. Using these equations, an analysis was made of the impact each clay could have on overall Cu recovery. The results suggest that Ca and Na montmorillonite clays could have a major impact on Cu recovery and that attapulgite and illite clays could have a smaller, but still significant, impact. Kaolinite and ripidolite clays pose little threat to loss of Cu from in situ leaching solutions.
Keywords
Copper-compounds; Waste-treatment; Mining-industry; Metallurgy; Metallurgical-processes; Metals; Environmental-pollution
CAS No.
7440-50-8
Publication Date
19920101
Document Type
IH; Report of Investigations
Fiscal Year
1992
NTIS Accession No.
PB93-132199
NTIS Price
A03
Identifying No.
RI-9396
NIOSH Division
RERC
Source Name
Reno, NV: U.S. Department of the Interior, Bureau of Mines, RI 9396
State
NV
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