EP 4093527 A1 20221130 - SEPARATION OF RARE EARTH ELEMENTS USING SUPPORTED MEMBRANE SOLVENT EXTRACTION
Title (en)
SEPARATION OF RARE EARTH ELEMENTS USING SUPPORTED MEMBRANE SOLVENT EXTRACTION
Title (de)
ABTRENNUNG VON SELTENERDELEMENTEN UNTER VERWENDUNG VON TRÄGERMEMBRAN-LÖSUNGSMITTELEXTRAKTION
Title (fr)
SÉPARATION D'ÉLÉMENTS TERRES RARES AU MOYEN D'UNE EXTRACTION PAR SOLVANT SUR MEMBRANE SUR SUPPORT
Publication
Application
Priority
US 2020014363 W 20200121
Abstract (en)
[origin: WO2021150208A1] 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.
IPC 8 full level
B01D 11/04 (2006.01); B01D 69/08 (2006.01); C22B 3/26 (2006.01); C22B 59/00 (2006.01)
CPC (source: EP KR US)
B01D 11/0415 (2013.01 - EP KR); B01D 11/0488 (2013.01 - EP KR); B01D 61/2461 (2022.08 - EP KR US); B01D 61/38 (2013.01 - EP KR); B01D 63/032 (2022.08 - EP KR US); B01D 69/142 (2013.01 - EP KR); C22B 3/06 (2013.01 - EP KR); C22B 3/32 (2021.05 - EP KR); C22B 3/3842 (2021.05 - EP KR); C22B 3/3844 (2021.05 - EP KR); C22B 3/408 (2021.05 - EP KR); C22B 59/00 (2013.01 - EP KR); Y02P 10/20 (2015.11 - EP KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021150208 A1 20210729; AU 2020424027 A1 20220811; AU 2020424027 B2 20240516; CN 114980990 A 20220830; EP 4093527 A1 20221130; JP 2023512494 A 20230327; JP 7462054 B2 20240404; KR 20220124264 A 20220913; MY 197844 A 20230720
DOCDB simple family (application)
US 2020014363 W 20200121; AU 2020424027 A 20200121; CN 202080093891 A 20200121; EP 20705861 A 20200121; JP 2022543735 A 20200121; KR 20227028341 A 20200121; MY PI2022003709 A 20200121