Extraction and Separation of Thorium and Ytterbium with Bis(2,4,4-Trimethylpentyl) Phosphinic Acid Using a Hollow Fiber Membrane Extractor |
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| Authors: | ZHANG Feng-jun LUO Fang Li De-qian WU Yong-lie |
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| Abstract: | The based membrane extraction of Th 4 and Yb 3 was studied in HBTMPP heptane using a hollow fibber membrane. The separation method of Th 4 and Yb 3 was proposed by kinetics competition. The separation operation of Th 4 and Yb 3 mixture was carried out by two successive extraction and stripping simultaneously. The concentration ratio of Th 4 to Yb 3 is 16 74 in the stripping solution. The recovery and purity of Th 4 are 71 6% and 95 74% respectively. |
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| Keywords: | rare earths ytterbium thorium hollow fibber membrane transfer bis(2 4 4 trimethylpentyl) phosphinic acid |
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