Abstract: Ningnan iron ore belongs to low magnetic oolitic hematite with low Fe grade and high content of impurities such as SiO₂, Al₂O₃, which can not be used directly.By adopting the process of coarse grinding-low intensity magnetic separation- fine grinding-demagnetizing-low intensity magnetic separation, Fe concentrate with Fe grade of 56.31% and the recovery of 80.89% was achieved, but the content of SiO₂, Al₂O₃ are still relatively high.Then, through the reverse flotation tests with different agents and the close-circuit tests, final iron concentrate with TFe grade of 58.65% and recovery of 87.01%, and total recovery of 70.04% was achieved.The experimental results show that the process above is great feasible and can be used as reference for the beneficiation of oolitic hematite.

Key words: Oolitic hematite, Magnetic roasting, Anionic collector, Reverse flotation