Inorganic Chemicals Industry

Extraction of lithium,potassium,rubidium and cesium by chlorination roasting-water leaching process

  • Zhang Lizhen ,
  • Zhang Yongxing ,
  • Zhang Xiufeng ,
  • Tan Xiumin
Expand
  • 1.Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China; 2.China National Engineering Research Center for Utilization of Industrial Minerals; 3.Key Laboratory for Polymetallic Ores Evaluation and Utilization,MNR

Online published: 2020-03-06

Abstract

The comprehensive extraction of lithium,potassium,rubidium and cesium from lepidolite concentrate by chlorina tion roastingwater leaching process was investigated.Through a series of conditions experiments including roasting tempera ture,roasting time,chlorinating agent amount and liquidsolid ratio etc.,the appropriate conditions were determined as fol lows:roasting temperature of 850 ℃,roasting time of 45 min,the amounts of anhydrous calcium chloride and sodium chloride are 50% of the amount of ore sample respectively,liquid solid mass ratio of 4 and leaching time of 45 min.Under the optimal conditions,the leaching rates of lithium,potassium,rubidium and cesium were 89.73%,90.64%,93.27% and 91.00%,respectively.In addition to high calcium content in leaching solution,other impurities such as magnesium,manganese,iron,aluminum and silicon etc.were rarely leached.The efficient separation of lithium,potassium,rubidium,cesium from the impurities was realized.

Cite this article

Zhang Lizhen , Zhang Yongxing , Zhang Xiufeng , Tan Xiumin . Extraction of lithium,potassium,rubidium and cesium by chlorination roasting-water leaching process[J]. Inorganic Chemicals Industry, 2019 , 51(10) : 48 -50 . DOI: 10.11962/1006-4990.2018-0624

Options
Outlines

/