专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明授权

US4041125A Process for separation of the lanthanides 失效
标题翻译：镧系元素分离方法
公开(公告)号：US4041125A
公开(公告)日：1977-08-09
申请号：US688046
申请日：1976-05-19
申请人： Jorolf Alstad , Leif Farbu
发明人： Jorolf Alstad , Leif Farbu
IPC分类号： C01F17/00 , C22B3/38
CPC分类号： C01F17/0006 , C22B3/0068 , Y02P10/234
摘要： An improved liquid-liquid extraction process for the separation of the elements of the lanthanide series is disclosed. The process involves dissolving the lanthanides in a sulfuric acid solution to form rare earth sulfates whereafter the solution is contacted with an organic solvent immiscible with water and containing di (2-ethylhexyl) phosphoric acid whereby the lanthanides are separated from impurities and at least some of the lanthanides are extracted into the organic phase. Thereafter, the organic and aqueous phases are separated and the organic phase containing the impurities-separated lanthanides is subjected to a back extraction with an aqueous phase comprising an aqueous solution with sulfuric acid. The contact time between the aqueous and organic phases in the back extraction is regulated so that a desired or desired elements of the lanthanides are back extracted into the aqueous phase. The contact time is controlled and is less than the total extraction equilibrium time between the phases. The organic and aqueous solution concentrations are also controlled. After a predetermined contact time, the aqueous and organic phases are immediately separated.
摘要翻译：公开了用于分离镧系元素的改进的液 - 液萃取方法。该方法包括将镧系元素溶解在硫酸溶液中以形成稀土硫酸盐，然后将溶液与不与水混溶并含有二（2-乙基己基）磷酸的有机溶剂接触，由此将镧系元素与杂质和至少一些将镧系元素萃取到有机相中。此后，分离有机相和水相，含有杂质分离的镧系元素的有机相用含有水溶液的水相进行反萃取。调节反萃取中的水相和有机相之间的接触时间，使得所需或所需的镧系元素的元素反萃取到水相中。接触时间被控制并且小于相间的总提取平衡时间。有机和水溶液的浓度也受到控制。在预定的接触时间之后，水相和有机相立即分离。

IPRDB

热门服务

关于我们

友情链接

联系方式