Purification of plutonium

Details Purification of plutonium Purification of plutonium

1978-09-06

1980-10-21

Miller, Edward A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423250, 423251, C01G 5600

Patent

active

042294215

ABSTRACT:
During the reprocessing of irradiated nuclear fuel by solvent extraction techniques a primary separation to give a uranium containing product stream and a plutonium containing product stream occurs. The plutonium in the plutonium containing stream is separated from neptunium and uranium by bringing a solution containing plutonium, neptunium and uranium in an organic solvent into contact first with an aqueous solution of a hydroxylamine and/or a hydrazine salt at 30.degree. to 35.degree. C. to preferentially reduce the neptunium and to extract it into the aqueous phase and then bringing the organic solution containing plutonium and uranium into contact with an aqueous phase containing a hydroxylamine and a hydrazine salt at about 50.degree. C. to preferentially reduce the plutonium and to extract it into the aqueous phase leaving the uranium in the organic solvent.

REFERENCES:
patent: 3374068 (1968-03-01), Erlandson et al.
patent: 3714324 (1973-01-01), Weech
patent: 3787553 (1974-01-01), Espie et al.
patent: 3962401 (1976-06-01), Tsuboya et al.
patent: 3981961 (1976-09-01), Bathellier et al.
patent: 4011296 (1977-03-01), Ruiz et al.
patent: 4131527 (1978-12-01), Friedman et al.

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