
基本信息:
- 专利标题: 溶剂萃取分离提纯稀土元素的工艺方法
- 专利标题(英):Process for solvent extraction separation purification of rare earth element
- 申请号:CN200710100026.3 申请日:2007-06-04
- 公开(公告)号:CN101319275B 公开(公告)日:2010-11-10
- 发明人: 黄小卫 , 龙志奇 , 李红卫 , 彭新林 , 刘营 , 张永奇 , 李建宁 , 赵娜
- 申请人: 北京有色金属研究总院 , 有研稀土新材料股份有限公司
- 申请人地址: 北京市新街口外大街2号
- 专利权人: 北京有色金属研究总院,有研稀土新材料股份有限公司
- 当前专利权人: 有研稀土新材料股份有限公司
- 当前专利权人地址: 北京市新街口外大街2号
- 代理机构: 北京北新智诚知识产权代理有限公司
- 代理人: 郭佩兰
- 主分类号: C22B3/26
- IPC分类号: C22B3/26 ; C22B3/08 ; C22B59/00
The invention provides a process method for separating and purifying rare earth elements by solvent extraction. The method takes a mixed rare earth sulfate solution obtained from a rare earth ore treated by sulphuric acid as a raw material, directly adopts a nonsaponifiable P507 extraction agent or a synergistic extraction agent containing the P507 to completely extract rare earth in a material liquid into an organic phase, and then takes the organic phase as a rare earth material liquid to extract, separate and purify the rare earth or directly backextract to produce mixed chlorinated rare earth or rare earth nitrate. The process method is simple and flexible, does not saponify the organic phase during the extraction and separation process, does not produce ammonia nitrogen waste water, is easy to backextract middle and heavy rare earths, and has less consumption of acid and base and low production cost.
公开/授权文献:
- CN101319275A 溶剂萃取分离提纯稀土元素的工艺方法 公开/授权日:2008-12-10
IPC结构图谱:
C | 化学;冶金 |
--C22 | 冶金(铁的冶金入C21);黑色或有色金属合金;合金或有色金属的处理 |
----C22B | 金属的生产或精炼;原材料的预处理 |
------C22B3/00 | 用湿法从矿石或精矿中提取金属化合物 |
--------C22B3/20 | .溶液(例如通过浸取制得的)的处理或净化 |
----------C22B3/26 | ..通过使用有机化合物的液—液萃取 |