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THE SEPARATION OF URANIUM FROM NaF-KF-UF$sub 4$ AND NaF-ZrF$sub 4$-UF$sub 4$ WITH BrF$sub 3$

Technical Report ·
OSTI ID:4816597
The use of the BrF/sub 3/ process in the removal of uranium from the fluoride mixtures NaF-KF-UF/sub 4/ (47-26-27 mole per cent, respectively) and NaF- ZrF/sub 4/-UF/sub 4/ (50-46-4 mole per cent, respectively) was investigated. More than 99 per cent of the uranium in the NaF-KF-UF/sub 4/ mixture was removed by direct treatment with liquid BrF/sub 3/. Effective separation of the uranium from the NaF-ZrF/sub 4/-UF/sub 4/ mixture required a pretreatment of the salt. Fusion with KF followed by BrF/sub 3/ treatment removed 95 per cent of the uranium from this fuel material. Direct treatment of the NaFof the uranium. Fusion of the zirconium-bearing fuel material with metallic fluorides other than KF, namely, NaF, RbF, and PbF/sub 2/ also improved the separation of uranium upon subsequent treatment with BrF/sub 3/. The best fluoride for fuel pretreatment was found to be KF. The extent of uranium removal from NaF-ZrF/sub 4/-UF/sub 4/ as a function of the amount of KF used in prefusion showed that a maximum separation of 95 per cent was obtained with a mole ratio of KF/ZrF/sub 4/ = 1. The uranium removal from NaF-ZrF/sub 4/UF/sub 4/ was increased to 98.2 per cent by employing a 2 cycle KF fusion-BrF/sub 3/ treatment. (auth)
Research Organization:
North American Aviation, Inc., Downey, Calif.
DOE Contract Number:
AT(11-1)-GEN-8
NSA Number:
NSA-16-008809
OSTI ID:
4816597
Report Number(s):
NAA-SR-269
Country of Publication:
United States
Language:
English

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Related Subjects

BROMINE FLUORIDES
CHEMISTRY
LEAD FLUORIDES
LIQUIDS
MELTING
MIXING
POTASSIUM FLUORIDES
QUANTITY RATIO
RUBIDIUM FLUORIDES
SALTS
SEPARATION PROCESSES
SODIUM FLUORIDES
URANIUM
URANIUM FLUORIDES
ZIRCONIUM FLUORIDES