| 简介 |
FIELD : metallurgy.
SUBSTANCE : invention refers to liquid extraction processes, in particular to obtainment of rear-earth metals concentrates, in non-ferrous and ferrous metallurgy, during utilisation of chemical and metallurgical production waste and for purification of shaft, mine and industrial waste water. The method of rear-earth metals removal from diluted water acid solutions involves consecutive steps of liquid-phase extraction of rear-earth metals to organic phase and re-extraction of rear-earth metals from organic phase by settlement of rear-earth metals to solid phase in the form of slightly soluble salt of strong acid.
EFFECT : providing efficient removal of rear-earth metals without neutralising of acid containing in organic phase and use of cheap commercially available reagents.
7 cl, 6 ex |
客服热线：
手机版
二维码
