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Metal Recovery from Metallurgical Wastes.

Authors
Gritton-KS; Froisland-LJ; Shirts-MB; Gebhardt-JE
Source
SME Preprint 90-84 1990 :9 pages
Link
NIOSHTIC No.
10007469
Abstract
The U.S. Bureau of Mines has investigated methods for extracting metals from a variety of arsenic-containing smelter flue dusts. One proposed flowsheet includes a sulfuric acid leach, a cooling step to precipitate hydrated copper sulfate, and a reduction-precipitation of as2o3. Arsenic extractions greater than 90 pct were achieved, while copper extraction ranged from 50 to 85 pct under the conditions examined. Copper was removed from the leach solutions by crystallization followed by so2 precipitation of arsenic which resulted in a 98- to 99.9-Pct-as2o3 product. Other metals, such as lead and zinc, were concentrated in the leach residue or in other byproduct streams for recovery of their valuable metal contents.
Publication Date
19900101
Document Type
OP;
Fiscal Year
1990
NTIS Accession No.
NTIS Price
Identifying No.
OP 74-90
NIOSH Division
SLRC;
Source Name
SME Preprint 90-84, 1990,
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