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Recovering Tungsten from Alkaline Brine.

Authors
Nichols-IL; Dannenberg-RO
Source
U S Pat 3 826 808 1974 Jul; :
Link
NIOSHTIC No.
10012014
Abstract
Alkaline solutions containing tungstate, e.g., natural brines or solutions prepared by alkaline digestion of w ores, are contacted with a solution of dihydroxyphenolic compounds, e.g., kerosine solutions of pyrocatechol. The tungstate is complexed and enters the organic phase. The organic phase is separated and stripped with aqueous naoh to recover the w. Also, an anion exchange resin can be used to extract the tungstate chelate.
Publication Date
19740701
Document Type
PA;
Fiscal Year
1974
NTIS Accession No.
NTIS Price
Identifying No.
PAT 3,826,808
NIOSH Division
SLRC;
Source Name
U.S. Pat. 3,826,808; July 30, 1974; Chem. Abstr. 82:19,117H
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