Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Study on an Intermediate Compound Preparation for a HTGR Nuclear Fuel

고온가스로용 핵연료 중간화합물 제조에 대한 연구

  • Kim, Yeon-Ku (HTGR Nuclear Fuel Technology Development Division, KAERI) ;
  • Suhr, Dong-Soo (Department of Material Engineering, Chungnam National University) ;
  • Jeong, Kyung-Chai (HTGR Nuclear Fuel Technology Development Division, KAERI) ;
  • Oh, Seung-Chul (HTGR Nuclear Fuel Technology Development Division, KAERI) ;
  • Cho, Moon-Sung (HTGR Nuclear Fuel Technology Development Division, KAERI)
  • 김연구 (한국원자력연구원 피복입자 핵연료기술개발과제) ;
  • 서동수 (충남대학교 재료공학과) ;
  • 정경채 (한국원자력연구원 피복입자 핵연료기술개발과제) ;
  • 오승철 (한국원자력연구원 피복입자 핵연료기술개발과제) ;
  • 조문성 (한국원자력연구원 피복입자 핵연료기술개발과제)
  • Published : 2008.11.30
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Abstract

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.

Keywords

References

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