Novel Technology for Comprehensive Utilization of Low-Grade Iron Ore

In this study, a novel technology for the comprehensive utilization of low-grade iron ore is presented. For with Fe content 24.91%, pilot-scale study pre-concentration, suspension magnetization roasting, grinding, and low-intensity magnetic separation was conducted, an concentrate grade 62.21% recovery 85.72% obtained. The products were analysed using chemical elemental analysis, particle size X-ray diffraction, scanning electron microscopy, vibrating sample magnetometry. results indicated that hematite reduced by CO H2 mixture transformed into ferrimagnetic magnetite in which easily recovered subsequent separation. Additionally, pre-concentration tailing SiO2 81.55% roasted 79.57% obtained, can be used as building materials. This presents significant implications ore.