碳酸锂氢化工段工艺技术研究

Research on Hydrogen Chemical Section of Lithium Carbonate Purification

对电池级Li_2CO_3氢化工段生产工艺流程进行优化。实验结果显示:氢化溶解率和氢化液pH值呈线性关系,获得的氢化条件为:最佳氢化时间为80 min,最适液固比大于23∶1,最终获得产品纯度达98. 7%以上,Ca、Mg含量分别降至0. 0004%、0. 0040%。

The hydrogen section process of the battery-grade Li 2CO 3 was optimized.The experimental results show that the hydrogenation dissolution rate and the pH of the hydride solution are linear.The hydrogenation conditions are as follows：the optimum hydrogenation time is 80 min,the optimum liquid-solid ratio is greater than 23∶ 11,and the purity of the product is finally 98.7% or more.Ca,The Mg content was reduced to 0.0004% and 0.0040%,respectively.