Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 1996, Vol. 7 ›› Issue (3): 161

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HEHEHP fractional extraction process with three outlets for separation of Am from rare earths

He Pei-Jiong(何培炯), Jiao Rong-Zhou(焦荣洲) and Zhu Yong-Jun(朱永贝睿)   

  1. Institute of Nuclear Energy Technology, Tsinghua University, Beijing 100084
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He Pei-Jiong(何培炯), Jiao Rong-Zhou(焦荣洲) and Zhu Yong-Jun(朱永贝睿). HEHEHP fractional extraction process with three outlets for separation of Am from rare earths.Nuclear Science and Techniques, 1996, 7(3): 161

Abstract: Americium is similar to light rare earths in solvent extraction by HEHEHP. So the fractional extraction process with three outlets, which is widely used on rare earth industrial scale, can be applied to separate Am from La, Ce, Pr, Nd and Sm. The better process parameters can be calculated by the material and distribution balance equations stage by stage with given organic loading. In order to recover 0.99 mole fraction of Am and remove 0.90 mole fraction of light rare earths from the feed solution, in which the mole ratios of La, Ce, Am, Pr, Nd, Sm are 0.140, 0.199, 0.005, 0.109, 0.487, 0.060, the total number of stages needed is 43, that is the extraction sector 18, first scrubbing sector 2 and second scrubbing sector 23. The fractional extraction process with three outlets is simpler and more convenient than two fractional extraction processes with two outlets.

Key words: Process parameters, Americium, Rare earths, HEHEHP, Fractional extraction