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http://dx.doi.org/10.14478/ace.2011.22.6.642

Study on the Fabrication of Porous Uranium Oxide Granule Using a Rotary Voloxidizer  

Lee, Jae-Won (Korea Atomic Energy Research Institute)
Yun, Yeo-Wan (Korea Atomic Energy Research Institute)
Shin, Jin-Myeong (Korea Atomic Energy Research Institute)
Lee, Jung-Won (Korea Atomic Energy Research Institute)
Park, Guen-IL (Korea Atomic Energy Research Institute)
Park, Jang-Jin (Korea Atomic Energy Research Institute)
Publication Information
Applied Chemistry for Engineering / v.22, no.6, 2011 , pp. 642-647 More about this Journal
Abstract
The fabrication characteristics of porous uranium oxide granules from $U_3O_8$ powder was investigated in terms of initial particle bed motions such as slumping and rolling, thermal treatment conditions, and rotational velocities in slumping motion using a rotary voloxidizer. With respect to the initial particle bed motion the recovery rate of granule of above 1 mm in slumping motion was higher than that in the rolling motion. Rolling motion was changed into slumping motion with high slumping frequency by formation of granules from fine particles. Recovery rate of granule significantly increased with the increas in thermal treatment temperature and time of upto 10 h. As the rotational velocity of voloxidizer in the case of the initial particle bed showing slumping motion increased, the recovery rate of granule increased from 81.5 to 88.7%. However, the rotational velocity of 2 rpm provided an effective density, crushing strength and sphericity of granules.
Keywords
advanced voloxidation; particle size control; granulation; rotary voloxidizer; uranium oxide;
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