Preparation of AUC by Hydrolysis Product of UF₆

The preparation process of AUC by the hydrolysis product of UF₆ was described. The equipment and the basic theory of AUC preparation were introduced. The difference between nitric acid system and fluorine system was discussed. The experiment results show that controlling the precipitation time in 3-4 h and the NH₃/U ratio in 26-30 are feasible. By this process, the granularity of AUC powder is about 30 μm, the bulk density is about 1.3 g/cm³, and the capability of UO₂ powder which produced by AUC is excellent. The sinter density is above 97%T.D.