URANIUM HEXAFLUORIDE PREPARATION METHOD

FIELD: uranium hydrometallurgy. ^ SUBSTANCE: invention relates to recovering uranium hexafluoride from various-composition solutions involving extraction, reextraction, and heat treatment techniques. Extraction of uranium is carried out with organic compounds or mixtures thereof followed by solid-ph...

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Bibliographische Detailangaben
Hauptverfasser:	LEBEDINSKIJ JU.M, SEREDENKO V.A, GUSEV A.A, SMIRNOV A.L, SOLOV'EV V.V, RYCHKOV V.N, SHTUTSA M.G, RODCHENKOV N.V, CHEREMNYKH G.S
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F FERROUS OR NON-FERROUS ALLOYS INORGANIC CHEMISTRY METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	FIELD: uranium hydrometallurgy. ^ SUBSTANCE: invention relates to recovering uranium hexafluoride from various-composition solutions involving extraction, reextraction, and heat treatment techniques. Extraction of uranium is carried out with organic compounds or mixtures thereof followed by solid-phase reextraction with 2.0-2.5 M ammonium fluoride solution without preliminary rinsing of extractant. Calcination of ammonium uranyl pentafluoride obtained as solid reextraction product is effected at 400-450. The latter product is then fluorinated with gaseous fluorine at 250-270. ^ EFFECT: simplified process and reduced expenses. ^ 4 cl, 4 tbl, 3 ex