METHOD FOR PRODUCING HIGH-PURITY NICKEL FROM NICKEL MATTE

摘要

A method for producing high purity nickel from nickel matte comprising successively the following steps: comminuting and roasting said matte at a temperature near 900 DEG C to obtain nickel oxide; dissolving this impure nickel oxide in concentrated hydrochloric acid; oxidating to the ferric state the iron which is contained in the impure solution resulting from the preceding step removing the impurities from this solution by means of ion exchange resin and eluting said impurities to recover cobalt; and subjecting said purified solution to an electrolysis to recover high-purity nickel.