METHOD OF OBTAINING URANIUM OXIDES AND SILICON TETRAFLUORIDE FROM DEPLETED URANIUM TETRAFLUORIDE Russian patent published in 2011 - IPC C01G43/01 C01B33/107 

FIELD: chemistry.

SUBSTANCE: invention can be used in fast reactors or for prolonged storage of uranium oxides. Depleted uranium tetrafluoride is mixed with silicon oxide and annealed at temperature 600-650°C in a pipe furnace in atmospheric air for 1-2 hours. The reagent mixture is prepared in molar ratio of uranium tetrafluoride to silicon oxide equal to (1.05-1.10):1 and then processed in a disintegrator which is a device composed of two rotors with fingers inside a common housing, where said fingers lie on concentric circles and where each row of one rotor lies between rows of other rotors rotating towards each other with relative velocity of 5-15 thousand rpm for 7-20 minutes. After annealing, triuranium octoxide which contains fluorine in form of uranyl fluoride is obtained.

EFFECT: invention enables to obtain uranium oxides which are not contaminated with silicon.

2 cl, 1 dwg, 5 ex