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Recovery of copper, iron, and sulfur from chalcopyrite concentrate using a ferric chloride leach.

Authors
Haver-FP; Wong-MM
Source
J Met 1971 Feb; 23(2):25-29
NIOSHTIC No.
10010631
Abstract
Smelting of copper concentrates results in the discharge of millions of tons so2 to the atmosphere each year. Because of increasing concern with air pollution, the Bureau of Mines has developed a hydrometallurgical procedure to obtain elemental sulfur from chalcopyrite by means of the following reaction: cufes2 + 3fecl3 -> cucl + 4fecl2 + 2s. Under optimum conditions, 99.9 percent of the copper and 73.7 percent of the iron was extracted in 2 hr from a typical mill concentrate containing approximately 75 percent cufes2 and 15 percent fes2. At the same time, 70.5 percent of the sulfur was oxidized to the elemental form. The leach was highly selective; gangue minerals, including pyrite, were not attacked, thus accounting for the relativley low recoveries of iron and sulfur.
CODEN
JOMTAA
Publication Date
19710201
Document Type
OP; Journal Article
Fiscal Year
1971
NTIS Accession No.
NTIS Price
Identifying No.
OP 127-71
Issue of Publication
2
ISSN
0148-6608
NIOSH Division
RERC
Source Name
Journal of Metals
State
NV
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