Separation of rare earths by means of liquid-liquid extraction

Details Separation of rare earths by means of liquid-liquid extraction Separation of rare earths by means of liquid-liquid extraction

C - Chemistry, Metallurgy

22

B

53/162

C22B 59/00 (2006.01) C01F 17/00 (2006.01) C22B 3/38 (2006.01)

Patent

CA 1233025

PRECIS DE LA DIVULGATION: La présente invention a pour objet un procédé de séparation par solvant des éléments terres rares contenus dans des solutions aqueuses. Ce procédé de l'invention con- siste à effectuer une extraction liquide-liquide entre une phase aqueuse renfermant les sels de ces éléments terres rares et une phase organique, et est caractérisé par le fait que l'on met en contact une solution aqueuse de nitrates de terres rares à séparer avec une phase organique contenant un agent d'extraction qui est constitué par au moins un composé organophosphinique.

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