| N523-TBP-磺化煤油萃取体系从饱和氯化镁卤水中萃取锂的工艺研究 |
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| 引用本文： | 时东,李晋峰,张波,聂峰,曾忠民,李丽娟.N523-TBP-磺化煤油萃取体系从饱和氯化镁卤水中萃取锂的工艺研究[J].盐湖研究,2013(2):52-57. |
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| 作者姓名： | 时东 李晋峰 张波 聂峰 曾忠民 李丽娟 |
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| 作者单位： | 中国科学院青海盐湖研究所;中国科学院大学;中国科学院上海有机化学研究所 |
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| 基金项目： | 青海省科技支撑计划项目(2011-G-206A) |
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| 摘 要： | 进行了以20%N523-30%TBP-50%磺化煤油萃取体系从青海高镁锂比盐湖卤水中萃取锂的工艺研究。根据相比实验求得萃取平衡等温线,通过阶梯图解法确定萃取理论级数为三级,并完成了三级逆流萃取串级实验。通过对洗涤、反萃、转相工艺进行的研究,确定了全流程八级萃取工艺。经此流程,锂的萃取率达96%,反萃液中杂质含量低,萃取剂经过多次循环无溶损,萃取性能良好,萃取过程分相快,未见三相及乳化现象。
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| 关 键 词： | 萃取体系 逆流萃取 锂镁分离 |
Process Study on N523-TBP-Sulfonated Kerosene Extraction System for Extraction of Lithium from Brine Saturated by Magnesium Chloride |
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| SHI Dong,LI Jin-feng,ZHANG Bo,NIE Feng,ZENG Zhong-min,LI Li-juan.Process Study on N523-TBP-Sulfonated Kerosene Extraction System for Extraction of Lithium from Brine Saturated by Magnesium Chloride[J].Journal of Salt Lake Research,2013(2):52-57. |
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| Authors: | SHI Dong LI Jin-feng ZHANG Bo NIE Feng ZENG Zhong-min LI Li-juan |
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| Institution: | 1(1.Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,810008,China; 2.Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai,200032,China; 3.University of Chinese Academy of Sciences,Beijing,100049,China) |
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| Abstract: | Process of extracting lithium from magnesium chloride saturated brine using 20%N523-30%TBP-50% sulfonated kerosene extraction system has been studied.Three stages countercurrent extraction experiment has been completed according to the extraction theoretical stage which is determined by ladder diagram method after the extraction equilibrium isotherm resulted from phase ratio experiment.The full 8-stage extraction procedure is determined according to the study of the process consisted of extraction,abstersion,stripping and extractant regeneration.Through this method,the extraction rate of lithium reaches to 96% with low impurity in strip liquor.The capability of the extractant was retained after many cycles without any solution loss and emulsifying phenomenon. |
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| Keywords: | Extraction system Countercurrent extraction Separation of lithium and magnesium |
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