Method of separating iron from uranium

Details Method of separating iron from uranium Method of separating iron from uranium

1978-07-13

1981-03-10

Kyle, Deborah L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 10, 423139, C22B 6002, B01B 1100

Patent

active

042553920

ABSTRACT:
In uranium recovery by solvent extraction processes, uranium is separated from iron in an organic extract by stripping the extract with a dilute aqueous solution containing carbonate ions, hydroxyl ions, and ammonium or alkali metal ions. The iron precipitates during stripping as Fe.sub.2 O.sub.3.nH.sub.2 O which is filtered off. The uranium is then precipitated from the filtrate as UO.sub.3.2H.sub.2 O by steam stripping or as ammonium diuranate by lowering the pH to about 2 to decompose the carbonate then raising it with ammonia or ammonium hydroxide to about 7.

REFERENCES:
patent: 3052513 (1962-09-01), Crouse, Jr.
patent: 3211521 (1965-10-01), George
patent: 3966872 (1976-06-01), Sundar et al.
patent: 3966873 (1976-06-01), Elikan et al.
patent: 4002716 (1977-01-01), Sundar
Langston, B. "Ammonium Carbonate Pressure Leaching of Uranium ore" Mining Engineering (Sep. 1957) pp. 989-993.
Pyrih et al., "Uranium Recovery from Wet Process Phosphoric Acid" WO 79/00142 (WIPO Published Int'l Appl.) Mar. 22, 1979.

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