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Recovery of Metal Values from Complex Sulfides.

Authors
Smyres-GA; Haskett-PR
Source
U S Patent Number 4 410 496 1983 Oct; :
Link
NIOSHTIC No.
10003204
Abstract
Copper, lead, and zinc are recovered from complex sulfides, e.g., ores or smelter flue dusts, by leaching with calcium or barium chloride in the presence of oxygen at 80 deg-150 deg c. Thus, a sulfide ore containing cu 0.6, PB 2.6, Zn 4.6, Fe 35, s 37 pct, and 7 oz/ton ag, was reacted with a 20-pct solution of cacl2 in an autoclave at 100 deg c and 60 psi o2 for 20 h. The solubilization was cu 75, pb 71, ag 67, and zn 96 pct. Approximately 90 pct of the fe and sulfates remained in the residue.
Publication Date
19831001
Document Type
PA;
Fiscal Year
1984
NTIS Accession No.
NTIS Price
Identifying No.
PAT 4,410,496
NIOSH Division
RERC;
Source Name
U.S. Patent Number 4,410,496, October 18, 1983; Chem. Abstr. 99:216,507N
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