[2K01-04] Pyroprocessing

[2K02] Development of Innovative Nuclear Waste Burning System by Fast Reactor Cycle Using Pu Metallic Fuel with MA

(12)Study on Removal of Rare-earth Fission Products from Spent Salt by Precipitation

*Koichi Uozumi¹, Masatoshi Iizuka¹, Yoshiharu Sakamura¹, Takashi Omori² (1. Central Research Institute of Electric Power Industry, 2. Toshiba Corporation)

Keywords:Metal fuel fast reactor cycle, Uranium-free TRU metal fuel, Pyrometallurgical reprocessing, Rare-earth fission products, Precipitation

Since removal of rare-earth FPs in spent salt by conversion to precipitate is considered in fast reactor cycle using uranium-free TRU metal fuel, experiments to add precipitants to molten salt containing rare-earth chlorides were conducted. From chemical forms and sizes of the precipitates, the precipitating reactions and appropriate method for collecting the precipitate were examined.