Comprehensive utilization of iron recovery from Jinchuan nickel residue

Based on the characteristics of Jinchuan nickel residue, a comprehensive utilization experimental study on iron recovery was done by the deep reduction-magnetic separation method to get iron concentrate whose grade of iron is 89.84% and recovery rate of iron is 93.21%. The effects of some experimental conditions such as reduction temperature, reduction time, binary basicity, grinding fineness and magnetic field intensity on the separation efficiency and product indexes were researched. The phase compositions and characteristics of nickel residue and iron concentrate were determined by X-ray diffraction, optical microscopy, SEM and chemical analysis.