| abstract |
Efficiently from a mixed metal aqueous solution containing a metal group A consisting of at least one of cobalt, nickel and lithium and a metal group B consisting of at least one of copper, zinc, manganese, calcium, aluminum and iron A method for separating the metal group B is provided. A mixed metal aqueous solution containing a metal group A comprising at least one of cobalt, nickel and lithium and a metal group B comprising at least one of copper, zinc, manganese, calcium, aluminum and iron. , Solvent extraction using a mixed extractant containing a phosphate ester extractant (hereinafter referred to as “first extractant”) and an oxime extractant (hereinafter referred to as “second extractant”), A method for separating a metal in a metal mixed solution, comprising separating the metal group B from the metal mixed solution. [Selection figure] None |