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Gallium solvent extraction from sulfuric acid solutions using OPAP.

Authors
Judd-JC; Harbuck-DD
Source
Sep Sci Technol 1990 Oct; 25(13-15):1641-1653
NIOSHTIC No.
10011093
Abstract
The U.S. Bureau of Mines investigated solvent extraction methods for recovering gallium from sulfuric acid leach filtrates produced from hydrometallurgical zinc residues. These filtrates typically had ph values of 0 to 0.5, Too low for effective gallium recovery by traditional extractants. Of the nine extractants tested, octylphenyl acid phosphate (opap) was the most effective. Gallium stripping was accomplished using a 1.5M h2so4 liquor. A continuous solvent extraction system was designed and operated for 32.4 H, treating a 0.32-G/l ga and 20-g/l fe filtrate. Overall gallium recovery in the system was 94 pct.
CODEN
SSTEDS
Publication Date
19901001
Document Type
OP; Journal Article
Fiscal Year
1991
NTIS Accession No.
NTIS Price
Identifying No.
OP 268-91
Issue of Publication
13-15
ISSN
0149-6395
NIOSH Division
SLRC
Source Name
Separation Science and Technology
State
OT
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