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Recovering Elemental Sulfur from Nonferrous Minerals: Ferric Chloride Leaching of Chalcopyrite Concentrate.

Authors
Haver-FP; Wong-MM
Source
NTIS: PB 197 025 :20 pages
Link
NIOSHTIC No.
10009220
Abstract
Because of increasing concern with air pollution, the Bureau of Mines has developed a hydrometallurgical procedure to obtain elemental sulfur from chalcopyrite (cufes2) by means of the following reaction: cufes2 + 3fecl3 -> cucl + 4fecl2 + 2s under optimum conditions, 99.6 percent of the copper and 71.6 percent of the iron were extracted in 2 hours from a typical mill concentrate containing 75 percent cufes2 and 15 percent pyrite (fes2). At the same time, 68.2 percent of the sulfur in the concentrate was oxidized to the elemental form. The leach was highly selective; gangue minerals, including pyrite, were not attacked, thus accounting for the relatively low recoveries of iron and sulfur.
Publication Date
19710101
Document Type
IH; Report of Investigations
Fiscal Year
1971
NTIS Accession No.
PB-197025
NTIS Price
A03
Identifying No.
RI 7474
NIOSH Division
RERC;
Source Name
NTIS: PB 197 025
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