| 摘要 |
The present invention relates to a method for recovering cobalt and nickel, through a series of steps comprising ion exchange, Fe removal, solvent extraction, and concentration/crystallization, from a waste solution generated during a process of recovering nickel from low-grade limonite. According to the method of the present invention, cobalt and nickel can be effectively recovered by adjusting the pH of a waste solution, which is discarded when recovering nickel, to 3-6 under a nitrogen atmosphere and using an ion exchange resin of two or more columns, thereby enabling the waste solution, generated when recovering nickel, to be recycled and cobalt and nickel to be obtained at lower cost. |
