| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of efficiently separating a metal group B from a metal mixed solution containing a metal group A consisting of at least one kind of cobalt, nickel and lithium and the metal group B consisting of at least one kind of copper, zinc, aluminum and iron.SOLUTION: A method of separating a metal mixed solution includes extracting a solvent using a mixed extracting agent including a phosphonic ester based extracting agent (hereinafter, referred to as a "first extracting agent") and an oxime-based extracting agent (hereinafter, referred to as a "second extracting agent") for a metal mixed solution containing a metal group A consisting of at least one kind of cobalt, nickel and lithium and a metal group B consisting of at least one kind of copper, zinc, aluminum and iron, and separating the metal group B from the metal mixed solution. |
