RECOVERY METHOD OF COBALT AND NICKEL

摘要

PROBLEM TO BE SOLVED: To provide a method for efficiently recovering cobalt and nickel from a solution containing copper, aluminum, and manganese together with cobalt and nickel.SOLUTION: A recovery method of cobalt and nickel comprises: a copper removal process of adding a sulfide to a solution containing copper, aluminum, and manganese together with cobalt and nickel to precipitate copper sulfide and separating the precipitate; an aluminum removal process of adding an alkali to the solution after the copper removal to precipitate aluminum hydroxide and separating the precipitate; a manganese removal process of adding an oxidant to the aluminum-removed solution to precipitate manganese oxide and separating the precipitate; and a process of recovering cobalt and nickel from the manganese-removed solution.