| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for recovering metal dissolved in a strong acid aqueous solution layer.SOLUTION: A separation recovering method for metal includes a step in which a strong acid aqueous solution in which metal is dissolved and a fluorous metal extraction solution made of a mixed fluorous solvent being a mixed solvent of a polyethylene diamine derivative represented by general formula (A), perfluoro tertiary amine represented by general formula (CF)N and perfluoro alkane represented by general formula CF(in these two general formulae, n denotes an integer) are mixed with each other, and in which the metal in the strong acid aqueous solution layer is transferred to the fluorous metal extraction solution layer. In the general formula (A), n denotes an integer from 0 to 3; R each independently denotes hydrogen or a group represented by -(CH)-(CF2) (wherein, at least one R denotes a group represented by -(CH)-(CF)); p denotes an integer from 1 to 3; and q denotes an integer from 4 to 12. |
