【作者】 肖成建； 汪小琳； 刘雪梅； 玄浩； 王丽雄； 傅中华； 李伟； 胡胜；

【Author】 XIAO Cheng-jian;WANG Xiao-lin;LIU Xue-mei;XUAN Hao;WANG Li-xiong;FU Zhong-hua;LI Wei;HU Sheng;Institute of Nuclear Physics and Chemistry,China Academy of Engineering Physics;China Academy of Engineering Physics;Institute of Extraction and Application Technology;

【机构】 中国工程物理研究院核物理与化学研究所； 中国工程物理研究院； 北京萃取应用技术研究所；

【摘要】 以小型环隙式离心萃取器为核心器件,设计用于钚元素的环隙式离心萃取系统。该系统在2000-8000 r/min离心转速和1/3¹流比范围内,水力学性能表现良好,无明显夹相;以0.1 mol/L TOPO/环己烷为萃取体系,0.01 mol/L草酸溶液为反萃体系,在短时间内完成6 mol/L HNO₃溶液中Pu（Ⅳ）的萃取分离操作,其中两级萃取率大于90%,单级反萃率超过96%,显示出该系统萃取速度快、效率高的特点,可用于钚溶液样品的快速分离。更多还原

【Abstract】 An extraction system with annular centrifugal extractors has been designed to separate plutonium.It worked well when centrifugal speed was ranged from 2000 to 8000 r/min and organicaqueous flow ratio was ranged from 1/3 to 1,without obvious entraining phenomenon.Pu（Ⅳ） in 6mol /L HNO₃ solution was fast extracted and separated,using 0.1 mol/L TOPO/Cyclohexane as extraction solvent,as well as 0.01 mol/L oxalic acid as back extraction solvent.The extraction ratio of two stages was larger than 90%,and the back ratio per stage was more than 96%.The extraction system shows fast operating speed and high extraction ratio,therefore suitable for fast separating Pu solution.更多还原