Overcoating Process and Equipments Development in Manufacture of Fuel Elements for HTR-PM

The equipments used in the overcoating process was developed, which comprise overcoating system, rotating screen, sorting device, homogenize equipment, and recovery system for unqualified overcoated particles. The results of batch experiments using optimized parameters show that the yield is high and stable. The failure ratio of coated particles in fuel elements satisfies design parameter. The equipments are easy to operation and control, and can satisfy the large-scale production of overcoated particles of fuel elements for HTR-PM.