Inorganic Chemicals Industry >
Optimization of process for preparation of battery grade lithium carbonate by carbonization
Received date: 2019-09-21
Online published: 2020-03-31
The carbonization method of lithium carbonate is characterized by its high reaction efficiency and simple process.It has become the mainstream process for battery-grade lithium carbonate production.However,in the process of preparing battery-grade lithium carbonate by carbonization method and with salt lake lithium concentrate as raw material,there are still problems such as low carbon dioxide utilization in the carbonization process,poor removal of impurities in the carbonized liquid and low lithium yield.With salt lake lithium concentrate as raw material,process optimization experiments were carried out from three main links:carbonization,purification and pyrolysis,that is,changing from atmospheric carbonization to pressurized carbonization,and using a combination of chemical purification and ion exchange resin adsorption to remove carbonization.Impurities in the liquid were changed from conventional pyrolysis to pressure pyrolysis,which can increase the carbon dioxide utilization rate in the carbonization processed to 87.4%,the removal rate of calcium and magnesium in the purification processed to 97.92% and 96.09%,and the direct yield of lithium in the whole processed to 82.27%.
Yan Zhang , Zhenzhong Zhao , Zhaohui Ma , Yancai Zhao , Zhiyu Chen , Zhengqiang Ma . Optimization of process for preparation of battery grade lithium carbonate by carbonization[J]. Inorganic Chemicals Industry, 2020 , 52(3) : 68 -71 . DOI: 10.11962/1006-4990.2019-0230
[1] | 陶箴奇 . 以盐湖碳酸锂为原料制备电池级碳酸锂的研究[D]. 西宁:青海大学, 2016. |
[2] | 米泽华 . 高纯碳酸锂的制取方法探讨[J]. 新疆有色金属, 2000(2):27-29. |
[3] | 陈奕, 李永华, 刘德敏 . 电池级碳酸锂的生产及其应用[J]. 化工矿物与加工, 2007, 36(5): 26, 30. |
[4] | 吴鉴, 戴永年, 姚耀春 . 氢化条件对碳酸锂提纯的影响[J]. 材料导报, 2011,25(7):82-84. |
[5] | 贾发云, 黎永娟, 刘国旺 , 等. 浅谈卤水电池级碳酸锂深度除镁技术[J]. 中国高新技术企业, 2014(26):46-47. |
[6] | 伊文涛, 严春燕, 马培华 , 等. 碳酸锂碳化反应动力学研究[J]. 化工矿物与加工, 2006(12):21-24. |
[7] | 汪发波, 王林生, 文小强 . 碳化分解法提纯碳酸锂的研究[J]. 有色金属科学与工程, 2013,4(2):41-45. |
[8] | 黄良标, 朱军, 王碧霞 , 等. 西藏盐湖锂精矿制备电池级碳酸锂几种工艺探讨[J]. 甘肃冶金, 2014,36(6):78-80. |
[9] | 王淑兰 . 物理化学[M]. 北京: 冶金工业出版社, 2007. |
[10] | 孙玉柱 . 碳酸锂结晶过程研究[D]. 上海:华东理工大学, 2010. |
/
〈 |
|
〉 |