METHOD OF PURIFYING URANIUM TETRAFLUORIDE HYDRATE AND PREPARING URANIUM (VI) PEROXIDE HYDRATE USING A FLUORIDE COMPLEXING AGENT

摘要

METHOD OF PURIFYING URANIUMTETRAFLUORIDE HYDRATE ANDPREPARING URANIUM (VI) PEROXIDE HYDRATEUSING A FLUORIDE COMPLEXING AGENTABSTRACT OF THE DISCLOSUREA method of preparing uranium (VI) peroxidehydrate from uranium tetrafluoride hydrate, comprisingthe steps of digesting uranium tetrafluoride hydrate inan aqueous acid in the presence of a fluoride complex-ing agent to produce an aqueous uranium solution,adjusting the aqueous uranium solution to a pH betweenabout 1 to about 3, filtering the aqueous uraniumsolution to remove undissolved material, reacting theaqueous uranium solution with peroxide to precipitateuranium (VI) peroxide hydrate, and separating theprecipitated uranium (VI) peroxide hydrate.