Abstract: To further improve the iron grade of a titanium-bearing iron concentrate in the Panxi area,a process mineralogy and fine grinding-magnetic separation experimental study was conducted. Through analysis of mineral dissemination characteristics and element occurrence states,the mineralogical factors affecting concentrate upgrading were clarified,and the feasibility of fine grinding for upgrading was evaluated. The results show that the sample has a TFe grade of 41. 59% and a TiO₂ content of 10. 84%. The main valuable minerals are titanomagnetite and ilmenite,while the gangue minerals are mainly pyroxene,chlorite,kaersutite,hornblende,and plagioclase. Iron is mainly hosted in magnetic iron minerals,with a distribution rate of 90. 12%;Titanium is mainly distributed in titanomagnetite and ilmenite,among which the TiO₂ distribution rate in titanomagnetite is 65. 59%. Titanomagnetite,ilmenite,and sphene are mainly finely disseminated and closely intergrown with gangue minerals. The liberation degree of titanomagnetite is only 36. 12%,which is the main factor limiting the improvement of iron concentrate grade. After grinding the material to 90% passing 45 μm using a horizontal stirred mill,the mineral liberation was significantly improved. Through two-stage magnetic separation, a magnetic concentrate with a yield of 78. 06%, TFe grade of 50. 90%,and TFe recovery of 95. 54% was obtained,and the contents of gangue components such as SiO₂,MgO,Al₂O₃,and CaO in the concentrate were significantly reduced. The results indicate that the fine grinding and multi-stage magnetic separation process can effectively upgrade and reduce impurities in titanomagnetite concentrate. This study provides a technical reference for the deep upgrading of vanadium-titanium magnetite concentrate in the Panxi area.