Abstract:s: According to the Shaanxi Hanzhoung area of vanadium titanium magnetite pellets, selection of conical ball mill grinding equipment, grinding on the inhibiting law of alkalinity on iron re oxidation, this paper focuses on the effects of process parameters on the magnetic separation effect of magnetic separation, and scanning electron microscopy (SEM) and X ray diffraction (XRD) characterization of the product. The results show that with the grinding time, slag particles decreased gradually, evenness increased, improve the mineral liberation degree; the ore iron grade grinding with the change of alkalinity increased at first and then decreased, the pH value of 13, reaching 59.3%. Grind size 95.2% -200 mesh, to obtain better effect of magnetic separation magnetic strength 60mT, the product of magnetic concentrate iron grade 84.9%, grade 0.52% and 3.54% respectively for vanadium and titanium, effectively realizes the separation of iron and vanadium; and the magnetic concentrate products are mainly metal iron. Non-magnetic products mainly composed of Fe3Ti3O10, FeVO4, the CaTiSiO5 and Mg1.2Ti1.8O5 phase composition.