METHOD FOR SEPARATING AND RECOVERING METAL ION AND TWO-PHASE SEPARATION FLUID

WIPO Patent Application WO/2023/054120

A1

Provided is a method for separating and recovering metal ions wherein an oil phase containing an extraction agent is mixed with an aqueous phase that contains at least two metal ion species including a group 3 to group 16 metal ion and that contains an organic compound that coordinates to at least one species of these metal ions, to thereby transfer a group 8 to group 12 metal ion from the aqueous phase into the oil phase. Also provided is a two-phase separation fluid in which an extraction agent-containing oil phase and an aqueous phase containing an organic compound and at least two metal ion species including a group 3 to group 16 metal ion, are present in a phase-separated manner, wherein a metal ion for which the extraction agent is coordination bonded to a group 8 to group 12 metal element is present in the oil phase.

WO/2017/025547	PROCESSES FOR EXTRACTING AND RECOVERING TANTALUM PRESENT IN AN ACID AQUEOUS PHASE BY MEANS OF AN IONIC LIQUID, AND USE OF SUCH AN IONIC LIQUID FOR EXTRACTING THE TANTALUM FROM AN ACID AQUEOUS PHASE
JP4326345	Method for purifying high-purity niobium compounds and / or tantalum compounds
JP2701284	[Title of Invention] Method for treating metal-containing water

KUSHIDA YO (JP)
MOCHIZUKI HIROAKI (JP)

PCT/JP2022/035176

April 06, 2023

September 21, 2022

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FUJIFILM CORP (JP)

C22B3/26; B01D11/04; C07C53/126; C07C211/07; C07C211/10; C07C229/16; C07C335/02; C07F9/40; C22B7/00

WO2014042136A1	2014-03-20
WO2020090690A1	2020-05-07

JPS54112723A	1979-09-03
US5260040A	1993-11-09
JP2014055312A	2014-03-27

IIDA & PARTNERS et al. (JP)

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