Method for recovering nickel from raw material containing nickel

摘要

The present invention relates to a method for effectively recovering nickel from a raw material containing nickel, and comprises: a reduction step for reducing the raw material containing nickel at a temperature between 550-950℃, using a reducing gas which contains twice or more moles of hydrogen than the number of moles of the raw material containing nickel (Fe+Ni); a slurrification step for slurrifying the reduced raw material containing nickel; a leaching step for leaching nickel by pouring the slurrified raw material containing nickel and acid into an oxygen-free reactor and dissolving the raw material containing nickel; a solid-liquid separation step for obtaining a solution containing nickel by filtering and eliminating residual sludge, by a solid-liquid separator, from the solution that has been obtained during the leaching step; and an iron elimination step for eliminating iron from the solution containing nickel.