首页|剪切强化碳化法制备电池级碳酸锂工艺研究

剪切强化碳化法制备电池级碳酸锂工艺研究

扫码查看
原文链接
  • 万方数据
  • 维普
针对传统碳化分解法制备电池级碳酸锂存在生产周期长、二氧化碳利用率低、杂质含量难以达到电池级碳酸锂标准等问题,以低品位锂云母矿石浸出液为原料,研究了碳酸钠沉锂—剪切碳化—离子交换—加热分解工艺制备电池级碳酸锂.结果表明:在温度30 ℃、液固体积质量比25/1、二氧化碳通入速率0.5 L/min、剪切转速6 000 r/min条件下,钙、镁、锰去除率分别达97.26％、81.82％、95.73％.剪切辅助碳化法可显著提升碳化反应速率,缩短反应时间,节省70％以上CO2气体,更有利于制得电池级碳酸锂.所制备碳酸锂符合电池级碳酸锂标准.
Preparation of Battery-grade Lithium Carbonate by Shear-assisted Carbonization Method
Aiming at the problems such as long production cycle,low utilization rate of carbon dioxide and difficult to meet the standard requirements of battery grade lithium carbonate produced by traditional carbonization decomposition method,the preparation of battery grade lithium carbonate by sodium carbonate-shear carbonization-ion exchange-heating decomposition process was studied using low-grade leachite ore as raw material.The results show that the removal rates of calcium,magnesium and manganese are 97.26％,81.82％and 95.73％,respectively,under the conditions of 30 ℃,liquid volume/solid mass ratio of 25/1,carbon dioxide input rate of 0.5 L/min and shear speed of 6 000 r/min.The shear assisted carbonization method can significantly improve the carbonization reaction rate,shorten the reaction time,save more than 70％of CO2,and is more conducive to the production of battery grade lithium carbonate.The prepared lithium carbonate can meet the standard of battery grade lithium carbonate.

lithium extraction from brineshear enhancementcarbide decomposition methodpreparationbattery-grade lithium carbonatecalciummanganesemagnesium

张艳、杨建广、范晓彬、刘将、苏安邦、朱强、唐施阳

展开 >

中南大学冶金与环境学院,湖南 长沙 410083

卤水提锂 剪切强化 碳化分解法 制备 电池级碳酸锂 钙 锰 镁

湖南省研究生科研创新项目湖南省重点研发计划湖南省高新技术产业科技创新引领计划广西壮族自治区重点研发计划广西壮族自治区科技计划广西重点实验室运行补助项目

QL202200652022GK20092021GK40042021AB26076桂科AD2029713921-220-09

2024

10.13355/j.cnki.sfyj.2024.02.013

湿法冶金
核工业北京化工冶金研究院

湿法冶金

北大核心
影响因子：0.631
ISSN：1009-2617
年,卷(期)：2024.43(2)
  • 13