Separation of rare-earth ions by non-aqueous solvent extraction

The present invention relates to a new solvent extraction process for the extraction of rare earth elements and the separation of a mixture of rare earth elements into the individual rare earth elements. Said process comprises the extraction of at least one rare earth element from an organic phase A into another immiscible organic phase B. The invention further relates to a non-aqueous solvent extraction process wherein at least one rare earth element is extracted from an organic phase A that comprises chloride ions into another immiscible organic phase B, wherein said organic phase B can be a non-polar organic solvent that comprises an extractant such as trialkylphosphine oxide (for instance Cyanex 923).

Octrooi-publicatienummer: WO2019034631

Jaar aanvraag: 2019

Jaar toekenning: 2020

Jaar van publicatie: 2019

Status: Aangevraagd

Technologiedomeinen: Materialen, metallurgie, Chemische ingenieurswetenschappen en techniek

Gevalideerd voor IOF-sleutel: Ja

Toegewezen aan: Associatie KULeuven