Abstract:the ilmenite mineral resources quality in China is very poor , and a significant amount of fine and ultrafine minerals are lost in tailings, making effective recovery a common challenge in the industry. Fine minerals, characterized by their light mass, large specific surface area, high activation energy, and susceptibility to oxidation, result in poor selectivity with conventional separation technologies and equipment. Using the developed set of fine mineral flotation machines and high-shear conditioning tanks, a semi-industrial flotation line with a capacity of 1.5 tons per hour was established. Tests were conducted under varying conditions of feed volume, feed concentration, and feed grade. The semi-industrial test results demonstrated that the fine mineral equipment technology exhibits excellent separation performance for fine minerals. Through a process flow involving pre-desulfurization followed by one roughing, two scavenging, five cleaning, and one cleaning scavenging step, a system recovery rate of 85% was achieved under conditions of 1.5 t/h processing capacity and 40% feed concentration. This enabled the efficient recovery of fine ilmenite mine. Additionally, the system showed strong adaptability under two different feed grade conditions, achieving high recovery rates in both cases. The relevant research findings from the semi-industrial tests on fine minerals provide technical support for the construction of industrial-scale lines and serve as a demonstration for the efficient recovery of fine ilmenite in the Panxi region.