【摘要】 对用全胶凝法生产HTR-10临界量陶瓷UO2燃料核芯进行了系统的总结,给出了陶瓷UO2产品的检测结果:密度>98%理论密度,氧铀比=2.00,不圆度<1.05,直径=500±50μm,标准偏差<15μm,提供了主要工序的控制参数。通过对温度、水解速度、胶液铀浓度、脱碳速度、还原-烧结升温程序、气氛等的控制,使质量达到了HTR-10燃料元件的设计要求,为工业化生产奠定了基础。本文还就若干关键技术:溶胶的质量控制、多喷嘴均匀分散、三功能回转真空干燥机等进行了介绍。更多还原

【Abstract】 HTR 10 fuel UO2 kernels were produced by total gelation process of Uranium(TGU).The performances of UO2 microspheres are as follows:density > 98% T.D.,O/U:2.00,non sphericity rate (Φmax/Φmin)< 1.05,diameter:500±50μm,diameter standard deviation<15μm.The various parameters of the main procedures are reported.Some key parameters,e.g.,temperature and time of hydrolysis,uranium concentration of sol,decarbonization rate,atmosphere and temperature program in the reducing sintering procedure have been controlled.The performances of UO2 kernels meet the design specification of fuel elements of the 10MW HTR of China.The base for industrial production of UO2 fuel kernels has been obtained.更多还原