Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Radioactive metal
Patent
1979-11-19
1981-10-06
Kyle, Deborah L.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Radioactive metal
423 3, 423 19, 423260, 423261, C01G 4301
Patent
active
042935288
ABSTRACT:
This information relates to the recovery of uranium from uranium peroxide yellowcake produced by precipitation with hydrogen peroxide. The yellowcake is calcined at an elevated temperature to effect decomposition of the yellowcake to uranium oxide with the attendant evolution of free oxygen. The calcination step is carried out in the presence of a reducing agent which reacts with the free oxygen, thus retarding the evolution of chlorine gas from sodium chloride in the yellowcake. Suitable reducing agents include ammonia producing compounds such as ammonium carbonate and ammonium bicarbonate. Ammonium carbonate and/or ammonium bicarbonate may be provided in the eluant used to desorb the uranium from an ion exchange column.
REFERENCES:
patent: 2811412 (1957-10-01), Poirier
patent: 4092399 (1978-05-01), Narayan et al.
Merritt, R. C., "The Extractive Metallurgy of Uranium" Colo. School of Mines Research Inst. 1971, pp. 247-254.
Harrington, C. D., Uranium Production Technology, D. Van Nostrand Company, Inc. Princeton, N. J. 1959, p. 162.
Huggett Charles A.
Kyle Deborah L.
Mobil Oil Corporation
Powers, Jr. James F.
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