Use of amino-containing neutral phosphine extractant in extraction and separation of thorium and process of using same
AssigneeChangchun Institute of Applied Chemistry Chinese Academy of Sciences
InventorsWuping Liao, Yanling Li, Zhifeng Zhang, Guolong Wu, Youcai Lu
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Abstract
The present invention relates to use of an amino-containing neutral phosphine extractant of Formula I in extraction and separation of thorium, and a process of extracting and separating thorium using the amino-containing neutral phosphine extractant of Formula I, wherein, R1 and R2 are each independently selected from the group consisting of C1-C12 alkyl, R3 and R4 are each independently selected from the group consisting of C1-16 alkyl and hydrogen, and n is an integer of 1 to 8.
Claims19
A process of extracting thorium, comprising a step of extracting thorium by solvent extraction or solid-liquid extraction using the amino-containing neutral phosphine extractant of Formula I
- wherein,
- R1 and R2 are each independently selected from the group consisting of C1-C12 alkyl;
- R3 and R4 are each independently selected from the group consisting of C1-C16 alkyl and hydrogen;
- and
- n is an integer of 1 to 8,
- wherein the solvent extraction comprises:
- mixing a neutral phosphine extraction system including the amino-containing neutral phosphine extractant of Formula I and a thorium-containing feed solution to form a thorium-loaded organic phase and a raffinate;
- wherein the solid-liquid extraction comprises:
- contacting a solid separation material containing the amino-containing neutral phosphine extractant of Formula I with a thorium-containing feed solution to form a thorium-containing solid separation material and a raffinate.
Dependencies are inferred from the claim text.