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Improved Cupric Ammonium Carbonate Leaching of Copper Scrap.

Authors
Staker-WL; Chindgren-CJ; Dean-KC
Source
NTIS: PB 204 131 :9 pages
Link
NIOSHTIC No.
10008787
Abstract
Alternatives were developed to the conventional ammoniacal carbonate leaching-steam stripping procedure for recovering copper as an oxide from contaminated scrap metal. By entraining air bubbles in the leach solution, the copper dissolution rate was increased to 1.5 G/in2 of copper surface per hour, compared to 0.5 G/in2/hr produced by conventional agitation in stirred tanks. Using entrained nitrogen gas bubbles for agitation in conjunction with powdered sulfur not only resulted in rapid dissolution but also simultaneous precipitation of the copper from solution as a high-grade cuprous sulfide.
Publication Date
19710101
Document Type
IH; Report of Investigation;
Fiscal Year
1971
NTIS Accession No.
PB-204131
NTIS Price
A02
Identifying No.
RI 7554
NIOSH Division
SLRC;
Source Name
NTIS: PB 204 131
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