Process for working up uranium-thorium wastes

Details Process for working up uranium-thorium wastes Process for working up uranium-thorium wastes

1977-01-17

1978-11-07

Padgett, Benjamin R.

Compositions

Organic luminescent material containing compositions

Scintillating or lasing compositions

G21F 930

Patent

active

041245253

ABSTRACT:
There is provided a process for working up and returning without lost waste into the process of casting kernels of uranium-thorium oxide by dissolving the wastes in a nitric acid-hydrofluoric acid mixture and neutralizing the strongly acid solution before the addition to the casting solution. The strong nitric acid solution is evaporated up to the appearance of nitrous gas, the residue diluted with water and this solution brought to a pH of 2.5 to 3.5 with ammonia at a temperature below 40.degree. C.

REFERENCES:
patent: 3535264 (1970-10-01), Hackstein et al.
patent: 3573217 (1971-03-01), VAN DER Plas et al.
patent: 3669632 (1972-06-01), Kanij et al.
Stoller et al., Eds., Reactor Handbook, vol. II, Fuel Reprocessing, Interscience Publishers, Inc., New York, 1961, pp. 60-64.

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