The core of iron ore beneficiation lies in utilizing the differences in physicochemical properties between minerals to achieve efficient separation of iron minerals from gangue. The entire process mainly consists of three stages: crushing and grinding, separation and enrichment, and dewatering and concentration.

First is the pretreatment stage. After coarse, medium, and fine crushing, the raw ore enters a ball mill for grinding. The key to this step is controlling the grinding fineness to ensure sufficient liberation of iron mineral monomers, creating the necessary conditions for subsequent separation. Insufficient grinding will result in excessive intergrowths, affecting the concentrate grade; over-grinding will lead to severe mud formation, increasing the difficulty of recovery.

Second is the core separation stage, where different processes are selected based on the ore characteristics. Magnetite, due to its strong magnetism, mainly uses weak magnetic separation, utilizing magnetic fields to adsorb iron minerals; this process is simple and low-cost. For weakly magnetic ores such as hematite and limonite, a combination of strong magnetic separation, flotation, or gravity separation is required. Strong magnetic separation can discard a large amount of tailings; flotation uses reagents to change the hydrophobicity of the mineral surface, precisely separating fine particles; gravity separation uses density differences to process coarse ore. For complex and difficult-to-process ores, a combined "magnetic-flotation" or "gravity-magnetic-flotation" process is often used to improve performance indicators.

Finally, there is the product processing stage. The sorted concentrate slurry is dewatered by a high-efficiency thickener, and then further reduced in moisture by a filter, ultimately yielding iron concentrate powder that meets smelting requirements. Modern processes emphasize cascade recovery and energy conservation, maximizing resource utilization through optimized process structure.