Chemistry: electrical and wave energy – Processes and products
Patent
1985-06-20
1987-09-15
Tung, T.
Chemistry: electrical and wave energy
Processes and products
204 15, 423259, C25B 124
Patent
active
046937951
ABSTRACT:
In a process for the production of uranium tetrafluoride (UF.sub.4), uranic oxides, UO.sub.3 and U.sub.3 O.sub.8, are dissolved in dilute sulphuric acid (H.sub.2 SO.sub.4) and hydrofluoric acid (HF) is added to produce a uranyl fluoride-sulphate solution which is electrolytically reduced to uranous fluoride-sulphate complexes from which hydrated uranium tetrafluoride is precipitated by the addition of dilute HF at elevated temperature (preferably above 90.degree. C.). The uranyl fluoride-sulphate solution can alternatively be produced by dissolving uranyl fluoride in H.sub.2 SO.sub.4 or from uranyl sulphate solutions (derived from solvent extraction or ion exchange purification processes) conditioned with HF.
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patent: 2687995 (1954-08-01), Lofthouse
patent: 2733200 (1956-01-01), Kunin
patent: 2775552 (1956-12-01), Boyer
patent: 2859156 (1958-11-01), Allen et al.
patent: 3065045 (1962-11-01), Ito et al.
patent: 3347761 (1967-10-01), Blcek
Eccles Harry
Fell Stephen A.
British Nuclear Fuels PLC
Tung T.
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