基本信息:
- 专利标题： 一种以碳酸钾为沉淀剂制备电池级碳酸锂的方法
- 专利标题（英）：Method for preparing battery-grade lithium carbonate by taking potassium carbonate as precipitating agent
- 申请号：CN201610658960.6 申请日：2016-08-12
- 公开(公告)号：CN106276988A 公开(公告)日：2017-01-04
- 发明人： 张志强 , 毕秋艳 , 保英莲 , 李小松 , 陶箴奇 , 牛辉哲 , 兰聪
- 申请人： 青海大学
- 申请人地址： 青海省西宁市城北区宁大路251号
- 专利权人： 青海大学
- 当前专利权人： 江西春鹏锂业有限责任公司
- 当前专利权人地址： 338000 江西省新余市高新开发区阳光大道以南、泉州大道以东江西东鹏新材料有限责任公司内
- 代理机构： 西宁工道知识产权代理事务所
- 代理人： 沈耀忠
- 主分类号： C01D15/08
- IPC分类号： C01D15/08 ; C01D7/00 ; C01D3/04
The invention discloses a method for preparing battery-grade lithium carbonate by taking potassium carbonate as a precipitating agent, and relates to the technical field of chemical engineering. The method comprises the following steps of alkali liquid preparing, impurity removing, ion exchanging, evaporating and concentrating, reacting and ageing, filtering and washing, drying and finished product obtaining. The method has the advantages that potassium carbonate serves as the precipitating agent to react with lithium chloride to prepare lithium carbonate, finally-obtained mother liquid is a potassium chloride solution with the high purity, the mother liquid can be directly used for producing potassium chloride or potassium carbonate, and no waste is generated; by adding seed crystals to cooperate with the reaction temperature, the serious wall sticking problem in the reaction process is solved; by combining the seed crystals, the reaction temperature, the stirring speed and ultrasonic treatment, the problems that the lithium carbonate crystals are aggregated and are wide in particle size distribution are solved.
公开/授权文献:
- CN106276988B 一种以碳酸钾为沉淀剂制备电池级碳酸锂的方法 公开/授权日：2018-06-29
IPC结构图谱:
| C | 化学；冶金 |
| --C01 | 无机化学 |
| ----C01D | 碱金属，即锂、钠、钾、铷、铯或钫的化合物 |
| ------C01D15/00 | 锂的化合物 |
| --------C01D15/08 | .碳酸盐；酸式碳酸盐 |