Method of controlling the molybdenum content of uranium yellowca

Details Method of controlling the molybdenum content of uranium yellowca Method of controlling the molybdenum content of uranium yellowca

1977-08-04

1981-12-08

Schafer, Richard E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 17, 423 19, C01G 100, C01G 4300

Patent

active

043047572

ABSTRACT:
A method of controlling the molybdenum content of uranium yellowcake which is precipitated from an eluate of ammonium carbonate. The pH of the eluate is maintained at a relatively high value, i.e., never less than 9.3, while the eluate is heated to strip off ammonia, carbon dioxide, and water. Ammonia is added to the eluate during heating to keep the pH high and the molybdenum in solution in the eluate. Also, the precipitated uranium yellowcake may be treated by adding aqueous ammonia and heating to form an insoluble uranium salt and a soluble molybdenum salt which can be filtered to produce a uranium yellowcake having a reduced molybdenum content.

REFERENCES:
patent: 2811412 (1957-10-01), Poirier
patent: 3288570 (1963-08-01), Henrickson
patent: 3306714 (1967-02-01), Goren
patent: 3790658 (1974-02-01), Fox
Merritt, R. C., Extractive Metallurgy of Uranium, US-AEC, pp. 231-235, 1971.

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