Process for recovering concentrated, purified tungsten values fr

Details Process for recovering concentrated, purified tungsten values fr Process for recovering concentrated, purified tungsten values fr

1979-12-13

1981-07-21

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

75101BE, 423DIG14, C01G 4100

Patent

active

042798698

ABSTRACT:
A process for recovering concentrated, purified tungsten values, such as ammonium paratungstate, from a brine containing minor amounts of soluble tungsten and a substantial concentration of impurities, the brine having a pH in the range of from about 7.0 to about 8.5. In general, the process comprises: contacting the brine with a substantially water-insoluble ion exchange resin to adsorb the soluble tungsten; eluting the adsorbed tungsten values from the ion exchange resin; treating the eluate to convert the tungsten values to an extractable species; recovering the extractable species of tungsten values from the eluate to substantially concentrate the tungsten values; contacting the concentrated tungsten values with an extractant to substantially load the extractant with the concentrated tungsten values; and recovering from the extractant a product having concentrated, purified tungsten values.

REFERENCES:
patent: 3052516 (1962-09-01), Drobnick et al.
patent: 3316058 (1967-04-01), Chaney
patent: 3826808 (1974-07-01), Nichols et al.
patent: 4092400 (1978-05-01), Zbranek et al.
patent: 4115513 (1978-09-01), Kulkarni et al.
patent: 4180628 (1979-12-01), Marchant et al.
Altringer et al., "Bureau of Mines, RI8315" Dept. of Interior, Wash., D. C. 1978, pp. 1-15.

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