用远红外线干燥氧化铀凝胶球  

THE DRYING OF GEL MICROSPHERES OF URANIUM TRIOXIDEBY INFRA-RED RADIATION

作　　者：徐志昌[1] 张萍[1] 张富宏[1] 唐亚平[1] 

机构地区：[1]清华大学核能技术设计研究院

出　　处：《核科学与工程》1994年第4期335-339,共5页Nuclear Science and Engineering

摘　　要：研究了用远红外线干燥氧化铀凝胶球的各种影响因素，其中包括湿球（φ１．２ｍｍ）的铺放强度。空气的对流与增湿，温控程序等。目的是获得无破裂的干球，以奠定热处理的良好基础。结果表明：远红外箱内的热空气应当对流与增湿。在温控程序中对６Ｏ℃的恒温时间应≥２．５ｈ，在该条件下，湿球的铺放强度能达到３．８ｋｇ／ｍ２。还讨论了凝胶结构、脱水及干球破裂的机理。The study on the infra-red radiation drying of gel microspheres of uranium trioxide,includ-ing the influence of temperature gradient and humidity on the quality of xerogel of uranium triox-ide has been completed.The results show that the optimal drying conditions are as follows:using afan as to circulate air;adding a lid on the drying disc and pouring water into double layer of frame disc.In these conditions mentioned above the thickness of wet microspheres is not very important.This paper also describes,on the other hand,the structure of xerogel and drying mechanism.

关 键 词：氧化铀 凝胶球 远红外线 干燥 凝胶结构 核燃料 

分 类 号：TL211.1[核科学技术—核燃料循环与材料] TN219[电子电信—物理电子学]