To achieve the effective recovery of iron resources from solid waste, a combined recovery process of reverse flotation, magnetizing roasting, and magnetic separation was proposed, taking a low-grade iron tailings resource in Jingzhou, Hubei as the research object, to efficiently separate the weakly magnetic iron resources in the tailings. Mineralogical analysis indicates that the iron grade of the raw ore is 18.72%, and the ore mainly consists of weakly magnetic hematite and limonite, featuring a fine dissemination size and a high gangue content. Reverse flotation pretreatment was adopted to remove aluminosilicate gangue, thereby reducing the processing volume and energy consumption of subsequent processes. The reverse flotation process parameters were optimized through experiments. Under the conditions of a grinding fineness of 75%, a pulp pH of 9, a soluble starch dosage of 1 500 g/t, and a dodecyl amine dosage of 400 g/t, the iron recovery of reverse flotation roughing reaches 83.07%. After one cleaning stage, the total iron grade of the concentrate increases to 43.60%. Through single-factor experiments, the optimal parameters for magnetizing roasting and magnetic separation are determined as follows: a roasting temperature of 650 ℃, a roasting time of 30 min, a pulverized coal dosage of 6%, and a magnetic induction intensity of 180 mT. This process achieves the directional transformation of weakly magnetic hematite and limonite into strongly magnetic magnetite. After roasting, the magnetic iron grade increases from 0.20% to 43.12%, and the iron grade of hematite and limonite decreases from 38.16% to 1.02%. This combined process realizes the efficient recovery and enrichment of iron resources from the tailings, which provides a technical reference for the resource utilization of tailings.