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Using solvent-impregnated carbon to recover copper from oxidized mill tailings.

Authors
Jeffers-TH; Groves-RD
Source
MISSING 1985; :1-7
Link
NIOSHTIC No.
10004714
Abstract
The Bureau of Mines conducted laboratory tests to devise a procedure for extracting copper from low-grade discarded mill tailings. A solid extractant consisting of an organic solvent extraction reagent adsorbed on granular activated carbon was investigated and proved to be satisfactory for extracting copper directly from leach pulps. When this material was used in a cyclic leaching, stripping, and electrowinning process, 95 pct of the acid-soluble copper was recovered from oxidized mill tailings. The weathered tailings contained 0.24 pct cu (total) and 0.20 pct acid-soluble cu. The copper was recovered as cathodes containing, in parts per millon, 1.6 PB, 3.6 Fe, 0.5 Sb, 1.5 Al, 1.9 Mn, and <1 mg.
CAS No.
7440-50-8; 7440-44-0
Publication Date
19850101
Document Type
IH; Report of Investigations
Fiscal Year
1985
NTIS Accession No.
NTIS Price
Identifying No.
RI 8966
NIOSH Division
SLRC
Source Name
MISSING
State
WA
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