| P204-P507-H2SO4体系萃取稀土元素的研究 |
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| 引用本文： | 李建宁,黄小卫,朱兆武,龙志奇,彭新林,崔大立.P204-P507-H2SO4体系萃取稀土元素的研究[J].中国稀土学报,2007,25(1):55-58. |
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| 作者姓名： | 李建宁 黄小卫 朱兆武 龙志奇 彭新林 崔大立 |
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| 作者单位： | 北京有色金属研究总院稀土材料国家工程研究中心,有研稀土新材料股份有限公司,北京,100088 |
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| 摘 要： | 对P204与P507混合萃取剂在硫酸介质中萃取分离Nd和Sm的行为进行了研究。重点考察了在硫酸介质中,P204添加一定量P507对稀土萃取能力、反萃性能以及Nd-Sm分离效果的影响。测定了不同比例的混合有机相在不同平衡酸度下的Nd,Sm分配比以及协同系数,并得到了相应条件下的Sm/Nd分离系数。试验结果表明,P204与P507混合体系在硫酸介质中萃取分离Nd,Sm时存在不同程度的正协同效应。
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| 关 键 词： | 硫酸介质 协同萃取 稀土 |
| 文章编号： | 1000-4343（2007）01-0055-04 |
| 修稿时间： | 2006-09-102006-10-20 |
Extracting Rare Earth from D2EHPA-HEHEHP-H2SO4 System |
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| Li Jianning,Huang Xiaowei,Zhu Zhaowu,Long Zhiqi,Peng Xinlin,Cui Dali.Extracting Rare Earth from D2EHPA-HEHEHP-H2SO4 System[J].Journal of the Chinese Rare Earth Society,2007,25(1):55-58. |
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| Authors: | Li Jianning Huang Xiaowei Zhu Zhaowu Long Zhiqi Peng Xinlin Cui Dali |
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| Institution: | National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals, GRIREM Advanced Material Co., Ltd., Beijing 100088, China |
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| Abstract: | The extraction and separation of Nd and Sm from sulfuric acid medium with mixed extraction of D2EHPA and HEHEHP were researched.Meanwhile,the influences on the extraction capability and characteristics of counter extraction as well as the separation effect of Nd and Sm from sulfuric acid medium with D2EHPA added by HEHEHP were studied.The distribution ratios and synergistic coefficients of Nd and Sm at different acidities were determined.Meanwhile,the corresponding separation coefficient of Sm/Nd was calculated.When D2EHPA and HEHEHP were used as synergistic extractant to extract Sm or Nd,positive synergistic extractive effect was found in this system. |
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| Keywords: | P204 P507 Sm Nd |
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