摘要
本工作对气流粉碎技术在陶瓷UO2 粉末制造工艺中应用的可行性、气流粉碎条件 (进料速度、气流压力等 )进行了试验研究。确定了进料速度为 ( 10 0～ 150 )kg/h和气流压力为 ( 0 65～0 75)MPa为最佳气流粉碎条件。研究结果表明 :采用该技术 ,不仅能够较好地解决大颗粒UO2粉末的粉碎技术和环境污染等问题 ,同时还能进一步缩短重铀酸铵 (ADU)脱氟还原的工艺过程。经脱氟还原后的UO2 粉末不需预先进行稳定化和筛分处理而可直接进行气流粉碎 ,粉碎后的UO2粉末性能良好 。
In the paper,the feasibility and conditional tests including feed speed and air pressure of pneumatic milling technology used in ceramic UO 2 powder manufacturing process are studied. The test determines 100～150 kg/h of feed speed and 0.65～0.75 MPa of air pressure as the optimized parameters. The test results show that the pneumatic milling process not only can solve the milling technology with big particle size of UO 2 powder and environment contamination during milling operation, but also can reduce the time of ADU reduction, and the UO 2 powder after reduction by kilning and without stabilizing and sieving can be directly introduced into milling device for pneumatic milling. The UO 2 powder passed the pneumatic milling operation has the better physical and chemical characteristics,and it meets the needs of design specification.
出处
《原子能科学技术》
EI
CAS
CSCD
2001年第B05期125-130,共6页
Atomic Energy Science and Technology
