东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (11): 1251-1254.DOI: -

• 论著 • 上一篇    下一篇

乙醇萃取法制备低Na;K高纯氯化锂

金哲男;李席孟;蓝为君;刘秀儒;   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2006-11-15 发布日期:2013-06-23
  • 通讯作者: Jin, Z.-N.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50504006)·

Preparation of low Na/K highly purified LiCl by alcohol extraction

Jin, Zhe-Nan (1); Li, Xi-Meng (1); Lan, Wei-Jun (1); Liu, Xiu-Ru (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-11-15 Published:2013-06-23
  • Contact: Jin, Z.-N.
  • About author:-
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摘要： 基于碱金属氯化物在乙醇中的溶解度差异,首次提出了乙醇萃取法制备低Na,K高纯氯化锂的工艺方法·除Ca实验表明,当草酸锂的加入量为0·6%时,Ca质量分数可控制在10×10-6~15×10-6以下;除Na,K实验表明,当液固比为8·5,过滤次数为2次时,Na质量分数可降到40×10-6以下,K质量分数可降到5×10-6以下·说明乙醇萃取法很好地解决了氯化锂制备中很难深度除去Na,K的技术难题

关键词: 乙醇, 萃取, 除钙, 高纯氯化锂

Abstract: Based on the different of solubilities of alkali metal chlorides in alcohol, the highly purified lithium chloride with low sodium/potassium contents was prepared for the first time by alcohol extraction process. The results showed that calcium content in mass fraction can be controlled lower than (10-15) × 10-6 after decalcification by adding 0.6% lithium oxalate, meanwhile, the sodium and potassium contents can be lower than 40 × 10-6 and 5 × 10-6, respectively, when filtering the solution 2 times and the liquid to solid ratio 8.5. Such a result means that the alcohol extraction is an effective way to remove sodium and potassium in preparing highly purified lithium chloride.

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