| 摘要 |
<p>A method for the separation of nickel and iron from an acidic iron-containing nickel solution containing at least some dissolved iron in the ferric [Fe(III)] state comprises conducting a crude precipitation to precipitate some of the iron present in the solution by increasing the pH of the solution, electrochemically reducing the remaining ferric [Fe(III)] content of the iron-containing nickel solution to the ferrous [Fe(II)] state; and selectively separating the soluble nickel and ferrous [Fe(II)] components of the liquor by contacting the liquor with an ion exchange resin to selectively capture nickel. The nickel-loaded resin may be stripped to form a nickel-rich solution and nickel or a nickel product recovered from the nickel rich solution. The substantially nickel-free liquor derived from the ion exchange step may be treated to remove soluble iron therefrom.</p> |
