Apparatus and method for recovering particulate material...

Details Apparatus and method for recovering particulate material... Apparatus and method for recovering particulate material...

C - Chemistry, Metallurgy

01

G

23/227, 165/43

C01G 43/01 (2006.01) B01D 47/06 (2006.01)

Patent

CA 1124033

ABSTRACT OF THE DISCLOSURE This discloses a process for recovering a particulate uranium oxide material containing uranyl fluoride impurities as well as other impurities from a gaseous suspension of the material and simultaneously treating the particulate material to form a ceramic uranium dioxide material having improved properties. The gas stream is contacted with a dilute solution of ammonium hydroxide to form a slurry of the particulate uranium oxide which is then dewatered and calcined to yield a uranium dioxide product which is an admixture of uranium dioxides derived from two different precursors. There is disclosed a preferred practice of this method for recovering the uranium oxide from a gas stream produced in a gas phase reaction of uranium hexafluoride, an oxygen-containing gas and a reducing gas. An apparatus suitable for carrying out the process described herein is also disclosed.

294433

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