Preparation of hydrous titanic acid as an inorganic ion exchanger for Sr recovery

Fujiwara, Takeshi

In the 4-Group partitioning process developed in Japan Atomic Energy Research Institute (presently: Japan Atomic Energy Agency), a heat-generating nuclide group including Sr and Cs is separated by inorganic ion exchangers. Hydrous titanic acid and zeolite are used as the inorganic ion exchangers. The mechanical durability of the particles of hydrous titanic acid used for Sr recovery is not enough in case of mixing with zeolite used for Cs recovery. The method of drying the hydrous titanic acid was improved to provide sufficient mechanical durability to the product of hydrous titanic acid in case of mixing with zeolite. A procedure of producing hydrous titanic acid from the raw material, titanyl sulfate, was established and documented with cares to be taken at each step.