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A METHOD FOR RE-EXTRACTION OF RARE-EARTH METALS FROM ORGANIC SOLUTIONS AND PREPARING CONCENTRATE OF 发明申请

2023-01-19 2720 411K 0

专利信息

申请日期 2025-07-18 申请号 WORU13000990
公开(公告)号 WO2014137238A1 公开(公告)日 2014-09-12
公开国别 WO 申请人省市代码 全国
申请人 OPENED JOINT STOCK COMPANY "UNITED CHEMICAL COMPANY URALCHEM"
简介 The present invention relates to a method for recovery of rare earth metals (REM) from diluted aqueous acidic solutions comprising steps of liquid-phase extraction of REM into an organic phase and re-extraction of REM from the organic phase, wherein the re-extraction is carried out by precipitation of REM as a solid phase in the form of a poorly soluble salt of a strong acid (pKa<0). Recovery of REM into the concentrate is up to 99% in the course of one stage of the re-extraction.


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