Process and device for direct conversion of uranium hexafluoride to uranium oxide

摘要

Invention Patent: B "PROCESS AND DEVICE FOR DIRECT CONVERSION OF URANIUM HEXAFLUORIDE TO URANIUM OXIDE" D. The conversion device comprises, in succession, a reactor (12) equipped with means of introducing UF ~ 6 ~, water vapor and nitrogen intended to cause the formation of UO ~ 2 ~ F ~ 2 ~ by hydrolysis, a rotary pyrohydrolysis furnace designed to transform UO ~ 2 ~ F ~ 2 ~ into uranium oxide, equipped with heating means divided into at least five zones and means for conditioning the oxide powder. The means of introduction comprise an injector with three concentric nozzles connected respectively to UF ~ 6 ~, nitrogen and water vapor inlet, UF ~ 6 ~ being taken to the central nozzle and nitrogen being injected between UF ~ 6 ~ and water vapor.