Abstract: Aiming at the problems of low iron grade and insufficient market competitiveness of vana‐ dium-titanium magnetite concentrate produced by a mining company in Xichang area，experimental re‐ search on fine grinding separation and upgrading process was carried out. Firstly，the mineralogical proper‐ ties of vanadium-titanium magnetite concentrate were studied by chemical multi-element，XRD，particle size composition and iron distribution. Through the comparison and selection test of ultra-fine grinding and grinding equipment of tower mill and Isamill，and tower mill was selected for grinding. On this basis，the separation indexes of single low intensity magnetic separation，single elutriation magnetic separation and combined separation of low intensity magnetic separation + elutriation magnetic separation were compared， and the combined separation process of low intensity magnetic separation + elutriation magnetic separation was determined. The high grade vanadium titanomagnetite concentrate with yield of 87.79%，iron grade of 59.33% and iron recovery of 95.45% was obtained under the conditions of tower mill grinding (-0.045 mm accounted for 90%)，low intensity magnetic separation magnetic induction intensity of 250 mT and washing magnetic separation water volume of 300 mL/s. The test results provide a technical basis for the subsequent process transformation of the mine site，and also provide a reference for the selection of similar iron con‐ centrate upgrading and impurity reduction beneficiation process.

Key words: iron concentrate, tower mill, Isamill, mineral processing process