Pyrochemical separation of plutonium from irradiated nuclear fue

Details Pyrochemical separation of plutonium from irradiated nuclear fue Pyrochemical separation of plutonium from irradiated nuclear fue

1976-03-17

1978-05-30

Padgett, Benjamin R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423251, 2523011W, 423 11, 423 19, C01G 5600

Patent

active

040923975

ABSTRACT:
In the recovery of plutonium from irradiated nuclear fuel elements especially those coming from fast nuclear reactors, the improvement consisting in that the spent nuclear fuel elements are subjected to the action of a molten nitrate bath (mixed nitrates of alkali metals or alkaline earth metals), whereafter the plutonium thus obtained is further decomposed in a nitrate bath at a higher temperature, then the plutonium is recovered and a further thermal decomposition of the remaining material at a still higher temperature enables the uranium to be recovered. The recovery of plutonium requires the action of the nitric vapors, the recovery of uranium does not. Molten nitrates can likewise be recovered and recycled.

REFERENCES:
patent: 3804939 (1974-04-01), Strickland et al.
patent: 3981960 (1976-09-01), Brambilla et al.

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