从硫酸锂粗矿中分离富集锂的实验研究

Separation and Enrichment of Lithium from Lithium Sulfate Crude Ore

中文关键词:  硫酸锂粗矿  镁锂分离  蒸发浓缩  富锂溶液

英文关键词:Lithium sulfate crude ore  Separation of magnesium and lithium  Evaporating and concentrating  Lithium-enriched solution

中文摘要:

      针对从西藏查波措盐湖卤水中获得的硫酸锂粗矿,开展从该矿物中分离提取锂的研究。根据该矿物的组成,设计了去除与锂离子共存的镁、硫酸根等主要离子的工艺路线,通过除镁、硫酸根、钙等过程和蒸发浓缩、结晶分离等步骤,得到了杂质离子含量较低的富锂溶液。实验对除镁步骤的加水量、加料方式、反应时间、CaO加入量等反应关键控制因素进行了考察,确定了较优的分离条件。

英文摘要:

      :The extraction of lithium from lithium sulfate crude ore obtained from Chabocuo Salt-lake in Tibet has been studied in this paper.According to the composition of the mineral,this paper designed the procedures that removing the coexisted magnesium,sulfate and other major ions.The lithium-enriched solution with low impurities was obtained after removing magnesium,sulfate,calcium and evaporating.The main control factors for removing magnesium,such as dosages of water and calcium oxide,the way of adding reagents and reaction time have been investigated,and the optimized separation conditions were determined.