在流化床中硝酸铀酰脱硝－还原制备二氧化铀的试生产  

THE TEST AND PRODUCTION IN PREPARING URANIUM DIOXIDE FROM URANYL NITRATE IN THE FLUIDIZED BED BY THE DENITRATION AND REDUCTION

作　　者：任凤仪 芦兴臣 刘学贵 

机构地区：[1]中国核工业总公司兰州核燃料厂

出　　处：《核科学与工程》1995年第1期58-64,共7页Nuclear Science and Engineering

摘　　要：浓缩的硝酸铀酰溶液在流化床中脱硝和还原（简称为＂一步法＂）生产二氧化铀，是我国试验研究成功的一项新工艺。论述了硝酸铀酰脱硝还原的基本原理、工艺过程、主体设备，给出了试验结果和结论。该方法具有工艺流程短、设备少、运行费用低、放射性废液量少等优点。试验结果：铀收率为９９．９６％，铀的转化率为９３．５％。The method to prepare uranium dioxide from concentrated solution of uranyl nitrate in the fluidized bed by denitration and reduction(is called'one step method'for short)is a successful newly developed technology in China。This paper describes the basic principle,the technology process and the main equipments of denitration and reduction of uranyl nitrate.The results and conclusions of the experiment are glven。The advantages of this method are short technology process,a few equipment, low operating cost and little radioactive liquid water produced,etc。The recovery ratio of uranium is 99.96% and the conversion ratio of uranium is 93.5%。

关 键 词：硝酸铀酰 脱硝还原 二氧化铀 流化床 

分 类 号：TL21[核科学技术—核燃料循环与材料]