NICKEL AND COBALT RECOVERY FROM A BULK COPPER-NICKEL CONCENTRATEUSING THE CESL PROCESS

摘要

CESL has developed a novel hydrometallurgical process for treating Cu and Ni sulphide concentrates, including bulk concentrates. Both Cu and Ni are leached efficiently into solution, using a proprietary pressure oxidation process, along with other base metals, notably Co. A previous publication has described the Cu recovery from a low grade bulk concentrate, Mesaba, using this CESL Process, including an extensive piloting campaign. Ni and Co recovery from the same solution was investigated at the time, but not finalized. This paper will describe the latest work at CESL on Ni and Co recovery from the same concentrate.