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J. Korean Ceram. Soc. > Volume 45(11); 2008 > Article
Journal of the Korean Ceramic Society 2008;45(11): 725.
doi: https://doi.org/10.4191/kcers.2008.45.1.725
고온가스로용 핵연료 중간화합물 제조에 대한 연구
김연구, 서동수1, 정경채, 오승철, 조문성
한국원자력연구원 피복입자 핵연료기술개발과제
1충남대학교 재료공학과
Study on an Intermediate Compound Preparation for a HTGR Nuclear Fuel
Yeon-Ku Kim, Dong-Soo Suhr1, Kyung-Chai Jeong, Seung-Chul Oh, Moon-Sung Cho
HTGR Nuclear Fuel Technology Development Division, KAERI
1Department of Material Engineering, Chungnam National University
In this study the preparation method of the spherical ADU droplets, intermediate compound of a HTGR nuclear fuel, was detailed-reviewed and then, the characteristics on an ageing and a washing steps among the wet process and the thermal treatment process on the died-ADU${rightarrow}UO_3$ conversion with the high temperature furnaces were studied. The key parameters for spherical droplets forming are a precise control of feed rate and a suitable viscosity value selection of a broth solution. Also, a harmony of vibrating frequency and amplitude of a vibration dropping system are important factor. In our case, an uranium concentration is $0.5{sim}0.7mol/l$, viscosity is $50{sim}80$ centi-Poise, vibration frequency is about 100Hz. In thermal treatment for no crack spherical $UO_3$ particle, the heating rate in the calcination must be operated below $2^{circ}C$/min, in air atmosphere.
Key words: $UO_3$ kernel, Sol-gel, Liquid droplet, Vibration
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