C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
23/227
C01G 43/01 (2006.01) C01G 1/02 (2006.01)
Patent
CA 1077680
ABSTRACT OF THE DISCLOSURE Producing sinterable uranium dioxide by establishing a fluidized bed of uranyl fluoride solids, maintaining the bed of uranyl fluoride solids at temperatures in excess of 730°C while countercurrently contacting the solids with excess steam to convert the uranyl fluoride to triuranium octoxide; and thereafter fluidizing the triuranium octoxide at temperatures below about 500°C while countercurrently contacting the triuranium octoxide with excess hydrogen in the presence of steam whereby uranium dioxide is formed. The dioxide produced has a relatively low fluoride concentration.
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