METHOD FOR SEPARATING NICKEL FROM MATERIAL WITH LOW NICKEL CONTENT

摘要

The invention relates to a method for separating nickel and othervaluable metals from nickel-poor iron-containing material generated in thenickel ore concentration process, which method comprises a) a pulping stage,wherein the nickel-poor material is pulped into an acid-containing leachingsolution,and the pH of the leaching solution is adjusted to a range of 1.5 to 3.0,b) an atmospheric leaching stage, wherein the nickel-poor material obtainedfrom the pulping stage is contacted with an acid-containing solution and anoxygen-containinggas.