Recovery of uranium from wet process phosphoric acid by liquid-s

Details Recovery of uranium from wet process phosphoric acid by liquid-s Recovery of uranium from wet process phosphoric acid by liquid-s

1984-02-13

1986-07-08

Castel, Benoit

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

210665, 210682, B01D 1504, C01G 4300

Patent

active

045992215

ABSTRACT:
Recovery of uranium from crude wet process phosphoric acid (WPA) by cation exchange using as cation exchanger a resin comprising active amino phosphonic or hydroxy phosphonic groups linked to a matrix. The operational steps comprise reduction of uranium in the WPA to the tetravalent state, contacting the WPA with the cation exchange resin to load the latter with tetravalent uranium, displacing Fe.sup.+2 from the resin, washing the resin with aqueous ammonia, eluting the resin with a carbonate-bicarbonate solution and precipitating uranium from the eluate.

REFERENCES:
patent: 4002564 (1977-01-01), Carbonel et al.
patent: 4256702 (1981-03-01), Lyaudet et al.
patent: 4321235 (1982-03-01), Mouret et al.
patent: 4432944 (1984-02-01), Elliott

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