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Separation of rare earth elements using supported membrane solvent extraction 发明授权

2022-06-02 1600 982K 0

专利信息

申请日期 2025-04-24 申请号 US16537759
公开(公告)号 US11293078B2 公开(公告)日 2022-04-05
公开国别 US 申请人省市代码 全国
申请人 UT Battelle LLC
简介 A system and method for the recovery and separation of rare earth elements (REEs) are provided. The system and method include the supported membrane solvent extraction of REEs and the separation of light and heavy REEs that have been recovered from scrap permanent magnets and other electronic waste. In supported membrane solvent extraction, an organic phase consisting of an extractant and an organic solvent is immobilized in the pores of hollow fibers. An aqueous feed solution and a strip solution flow along the shell side and lumen side of the hollow fibers, respectively. The extractant functions as a carrier to selectively transport certain rare earth metal ions from the feed side to the strip side. The rare earth metals are concurrently back extracted in the strip solution, allowing processing to proceed continuously without equilibrium limitations.


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