[1E07-09] Properties of Fuel and Debris, and Fuel Fabrication Technology

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)

[1E09] Development of technology for the particle size adjustment of recycle powder in fast reactor MOX fuel fabrication(1) Particle size distribution adjustment technology of cyclone classifier

*Takanori Ono¹, Kazuya Yamamoto¹, Nobuhiro Aoki¹, Nobuhiro Hatanaka¹ (1. JAEA)

Keywords:

dry recycling of MOX powder,MOX fuel,cyclone classifier,classification

JAEA is developing a technology to adjust the particle size distribution of dry recycled powder using simulated MOX powder to consistently obtain high-density MOX fuel pellets.Defective MOX pellets are jet-milled and reused as raw material, but coarse powder or a wide particle size distribution lowers the sintered density. Therefore, the powder must be adjusted to an arbitrary, narrow distribution matching the sinterability of raw MOX and uranium powders.In this development, jet-milled simulated powder was classified using a cyclone classifier. The test demonstrated that optimizing classification conditions successfully adjusts the dry recycled powder to the desired narrow particle size distribution.