Abstract
Lithium metatitanate (Li2TiO3) is being considered as tritium breeding material for solid-type breeding blanket, which are used in pebble-bed form. The total amount of Li2TiO3 pebbles in Helium Cooled Ceramic Reflector (HCCR) Test Blanket Module (TBM) is approximately 80kg. Furthermore, DEMO reactor requires a great deal of breeder pebbles. Therefore, the development of mass-production system for breeder pebbles is necessary. The slurry droplet wetting method was adopted in the mass-production process for Li2TiO3 pebbles, which had been developed in Korea. In this method, an automatic slurry dispensing system is one of the key apparatuses because the uniformity of pebbles and production rate are able to be improved. The system was successfully manufactured, which was consisted of a dispensing unit for instillation of Li2TiO3 slurry, a glycerin bath for hardening of droplets, and an automatic maintaining unit for constant distance between syringe needle and glycerin surface. The production rate of this system for Li2TiO3 pebble was estimated at 50kg/year. In this study, it was investigated that the effect of dispensing and sintering conditions on the mass-production of Li2TiO3 pebbles.
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