东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (5): 679-682.DOI: -

• 材料与冶金 • 上一篇    下一篇

皂化P507体系有机相负载硅对稀土La萃取的影响

吴文远，张丰云，尹少华，边雪   

  1. (东北大学材料与冶金学院，辽宁沈阳110819)
  • 收稿日期:2012-12-14 修回日期:2012-12-14 出版日期:2013-05-15 发布日期:2013-07-09
  • 通讯作者: 吴文远
  • 作者简介:吴文远(1951-)，男，黑龙江哈尔滨人，东北大学教授，博士生导师.
  • 基金资助:
    国家重点基础研究发展计划项目(2012CBA01205)；教育部高等学校博士学科点专项科研基金资助项目(20090042120015，20100042110008).

Effect of Saponified P507 Loaded with Silicon on the Extraction of La(Ⅲ)

WU Wenyuan， ZHANG Fengyun， YIN Shaohua， BIAN Xue   

  1. School of Materials ＆ Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2012-12-14 Revised:2012-12-14 Online:2013-05-15 Published:2013-07-09
  • Contact: WU Wenyuan
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摘要： 在皂化P507萃取稀土过程中，乳化是溶剂萃取中常见的现象，会导致稀土萃取率低和成本升高等.因此，研究了皂化P507体系对Si的萃取，并用负载Si的有机相萃取La，分析Si在两相中的乳化和负载Si的有机相对萃取稀土的影响.结果表明:仅有少量的Si可以进入有机相，Si在两相中的乳化直接影响稀土的萃取效果，当有机相连续与含Si溶液混合四次后，La的萃取量减少了7g/L.负载有机相红外光谱研究表明:Si没有参与皂化P507的萃合反应；水峰和羟基变化说明乳化与萃取过程密切相关.

关键词: 硅, 皂化P507, 稀土, 乳化, 萃取

Abstract: In the process of saponified P507 system extraction of rare earth， the emulsification is a normal phenomenon in solvent extraction， resulting in an obvious decrease of REs’ extraction efficiency， high cost， etc. The extraction of Si， the emulsification of silicon (Si) in two phases and the effect of the saponified P507 loaded with Si on the extraction of rare earths were investigated. The results demonstrated that only a little Si enters the organic phase. The emulsification of Si has a direct influence on the La extraction， and the extraction capacity of La reduces 7g/L after four times mixing under the circumstances of organic phase continuation. The FTIR analysis illustrates that Si is not involved in reaction with saponified P507; the shifts of water peak and hydroxyl indicate that there is a closely relationship between the emulsification and extraction process.

Key words: Si, saponified P507, rare earth, emulsification, extraction

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