A fluidized-bed process has been studied for the conversion of UO2 to UC. The process involves making composite particles of UO2 and graphite and reacting them at 1450-1800°C in a fluidized-bed reactor using an inert gas (helium or argon) for fluidization. High reaction rates can be achieved over a wide range of process conditions. Product purity compares with that obtained in other carbothermic reaction processes. Precise product stoichiometric has not been demonstrated, but is believed to be easily achievable. At the present state of development, bed sintering has not been completely eliminated and thus may prevent rapid removal of the entire reaction product from the fluidized-bed reactor.
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