Extraction process for the recovery of tungsten from low level s

Details Extraction process for the recovery of tungsten from low level s Extraction process for the recovery of tungsten from low level s

1980-09-15

1981-09-01

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

75101BE, 423279, 423DIG14, C01G 4100

Patent

active

042871590

ABSTRACT:
A process for recovering tungsten from low level sources such as naturally occurring brines in a form substantially free of contaminating boron comprises adjusting the pH of the source solution to a value below about pH 8, contacting the pH-adjusted solution with an ion exchange resin, preferentially eluting the tungsten values in an aqueous eluate, extracting the eluate solution with an organic extractant comprising o-mercaptobenzoic acid, a quaternary alkylammonium salt and an inert organic solvent, and stripping the tungsten-loaded organic extractant solution with an aqueous basic stripping solution.

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Flaschka et al., "Chelates in Anal. Chemistry," vol. 1, Marcel Dekker, Inc., N.Y., 1967, pp. 332-346.

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