| 二(2-乙基己基)磷酸从含氟稀土硫酸溶液中萃取铈的机制 |
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| 引用本文： | 龙志奇,黄小卫,黄文梅,张国成.二(2-乙基己基)磷酸从含氟稀土硫酸溶液中萃取铈的机制[J].中国稀土学报,2000,18(1). |
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| 作者姓名： | 龙志奇 黄小卫 黄文梅 张国成 |
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| 作者单位： | 北京有色金属研究总院稀土工程中心,北京100088 |
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| 基金项目： | 国家自然科学基金! ( 597740 30 )，国家重点基础研究规划 项目!(G1 9980 61 30 2 ) |
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| 摘 要： | 研究了二 ( 2 乙基己基 )磷酸 (DEHPA) 磺化煤油体系从氟碳铈矿氧化焙烧 硫酸浸出液中萃取Ce4 的机制 ,发现水相中F- 和Ce4 同时被萃入有机相 ,通过斜率法和研究平衡有机相中cF- cCd4 和初始水相酸度、初始水相氟离子浓度、有机相浓度之间的关系 ,推测出F- 和Ce4 以CeF2 A2 形式被DEHPA萃入有机相。
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| 关 键 词： | 稀土 铈 氯 萃取 DEHPA |
Ce4+ Extraction Mechanism from Rare Earth Sulfate Solution Containing Fluorine with DEHPA |
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| LONG Zhi-qi,HUANG Xiao-wei,HUANG Wen-mei,ZHANG Guo-cheng.Ce4+ Extraction Mechanism from Rare Earth Sulfate Solution Containing Fluorine with DEHPA[J].Journal of the Chinese Rare Earth Society,2000,18(1). |
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| Authors: | LONG Zhi-qi HUANG Xiao-wei HUANG Wen-mei ZHANG Guo-cheng |
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| Abstract: | RE sulfate soluiton containing fluorine is obtained from bastnasite which is roasted in air and then leached with sulfuric acid. Solvent extraction of Ce 4 with DEHPA in sulphonating kerosene from the solution is investigated. It is found that fluorine ion is extracted into organic phase with Ce 4 . The extraction mechanism is proposed by slope analysis and studying the influence of aqueous acidity, fluorine concentration and DEHPA concentration on c F - / c Ce 4 in equilibrium organic phase. |
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| Keywords: | rare earths cerium fluorine solvent extraction DEHPA |
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