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| Extraction Kinetics of Hafnium and Zirconium in DIBK-TBP System |
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Received:July 31, 2013
Revised:August 03, 2013
Accepted:August 05, 2013
Published Online:January 20, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.02.010 |
| KeyWord:DIBK; TBP; extraction; zirconium; hafnium; kinetics |
| Author | Institution |
| XU Zhi-gao |
武汉工程大学，北京有色金属研究总院 |
| WU Ming |
北京有色金属研究总院 |
| CHI Ru-an |
武汉工程大学 |
| LI Pan-hong |
武汉工程大学 |
| WANG Li-jun |
北京有色金属研究总院 |
| YANG Hui-fang |
武汉工程大学 |
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| Abstract: |
| The extraction kinetics of synergistic extraction system of DIBK-TBP for hafnium and zirconium were studied in constant interface pool. The effects of temperature, interfacial area, and stirring speed on extraction rate of hafnium and zirconium were investigated. The results show that extraction process of hafnium and zirconium in DIBK-TBP system fits with pseudo-first order reaction. Affected by inner phase reaction and diffusion, the extraction process of hafnium is mix-controlled with apparent activation energy of -43.106 kJ/mol. Under no influence of stirring speed and interfacial area, the extraction process of zirconium is inner phase reaction control type with apparent activation energy of -16.204 kJ/mol. |
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