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Leach-precipitation-flotation Studies on Red Bed Copper Ore Using Controlled Atmosphere.

Authors
Batty-JV; Andrew-BF
Source
BoM, 1970 :9 pages
Link
NIOSHTIC No.
10009018
Abstract
The permian red bed copper deposits of the South Central States are a potentially important resource. Only the higher grade, near- surface ores are now exploited, because conventional froth flotation does not recover oxidized copper minerals which comprise 10 to 15 percent or more of the copper content of typical ore. Laboratory-scale beneficiation studies were initiated to devise a method capable of recovering both sulfide and oxidized copper mineral. Testing established that the high clay and gypsum content of typical ore prevented effective flotation of the oxide mineral using sulfidizing, fatty-acid, or oil emulsion techniques. A modified leach-precipitation-flotation (l-p-f) procedure recovered over 90 percent of the copper, compared to a recovery of 77 percent obtained by conventional sulfide flotation. The higher costs of the l-p-f method would reduce the increased revenue from higher copper recovery. An increase in copper price and/or an increase in oxide copper content of the ore would make the l-p-f process comparatively more attractive.
Publication Date
19700101
Document Type
IH; Report of Investigation;
Fiscal Year
1970
NTIS Accession No.
PB-191001
NTIS Price
A02
Identifying No.
RI 7375
NIOSH Division
SLRC;
Source Name
NTIS: PB 191 001
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