Abstract: Due to low grade，various impurities and complex embedment relationship between kyanite and impurities，a certain kyanite ore in Jiangsu belongs to a refractory ore. In order to provide a basis for the development and utilization of the kyanite resources，the related beneficiation tests were carried out. The results show that: through the process of grinding-iron and titanium removal by high gradient magnetic separation-grading at 45 μm- desliming and settlement for fine particles-acidic flotation for coarse particles，kyanite concentrate 1 with Al₂O₃ grade of 55.69% and Al₂O₃ recovery of 69.23% and kyanite concentrate 2 with Al₂O₃ grade of 50.17% and Al₂O₃ recovery of 15.16% were gained respectively. Concentrate 1 meets the quality requirements for national industry standards of LJ-55 kyanite concentrate，and concentrate 2 can be used as ceramic raw materials.

Key words: Refractory kyanite ore, High gradient magnetic separation, Grading flotation, Desliming