Abstract: In order to reduce the chromium-content of a certain ilmenite high intensity magnetic concentrate， ensure that it can be economically and reasonably used in titanium dioxide chloride process， the flash-magnetic roasting experiments were carried out. The cold-state simulation studies determined the optimal operation gas velocity was 0.61~0.69 m/s， the high-temperature state studies determined the optimal roasting temperature and roasting time was 800 ℃ and 100 s， respectively the gas velocity was 0.69 m/s. Magnetic concentrate index that TiO₂ grade 47.18%， impurity of Cr₂O₃ content is 0.25% and TiO₂ recovery 87.23% were obtained through the dry high intensity magnetic separation， the concentrate quality meets the grade three of ilmenite concentration quality standard. The research can provide a technical reference for the beneficiation of high chromium ilmenite ore．

Key words: Ilmenite, Chromite, Flash-magnetic roasting, Dry magnetic separation