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Laboratory Extraction of Copper from Chalcocite by Roasting, Reduction, and Smelting.

Authors
Fine-MM; Schluter-RB
Source
SME J 1971 Sep; 250(3):243-247
Link
NIOSHTIC No.
10010217
Abstract
A process for winning copper from pelletized chalcocite concentrate without matte smelting and converting is under development at the Twin Cities Metallurgy Research Center of the Bureau of Mines. The new procedure includes a two-stage fluid-bed treatment in which the pelletized concentrate with 33 percent cu and 7 percent s is first desulfurized to about 0.5 percent s in an oxidizing atmosphere, and then metallized by reduction with hydrogen. The reduced product is melted with flux to separate metallic copper from the gangue. The metal must be refined to remove residual sulfur and iron. The pelletizing of the fine concentrate into mini-pellets prior to fluid- bed treatment is an important feature of the process, because it permits shorter reaction time, decreases, dusting, and facilitates subsequent processing.
Publication Date
19710901
Document Type
OP;
Fiscal Year
1971
NTIS Accession No.
NTIS Price
Identifying No.
OP 155-71
Issue of Publication
3
NIOSH Division
TCRC;
Source Name
SME J., V. 250, No. 3, September 1971, PP. 243-247
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