Abstract: In order to exploit and utilize the powdery specularite at -15 mm in Jingtie Mountain of Jiusteel，the ringing possibility during magnetizing and roasting process in rotary kiln was studied based on the analysis of chemical component and softening melting performance of the ore and the reducing coal.The results showed that when the reduction temperature was strictly controlled at range of 850 ℃ to 900 ℃，the softening phenomenon of the ore did not happen，since the softening and melting temperature of the ore and the stage products is at 1 100 ℃ or above.The ore particles ranging from 15 mm to 5 mm are roasted by gas variable diameter kiln with the size from 0.45 m×9 m to 0.65 m×9 m.Under the condition of carbon powder content of 2.0％，roasting temperature at 850～900 ℃ for 2.5 h，charge ratio at 10％，grinding fineness of 80％ -0.074 mm and low intensity magnetic separation field intensity of 100 kA/m，iron concentrate with iron grade of 55% and the recovery of 83% was received，and the ringing phenomenon did not appear in 360 h.Scientific and rational kiln type，stable and reasonable thermal system，and appropriate particle size，can effectively reduce the ringing formation during magnetizing and roasting process of specularite in the rotary kiln in Jingtie Mountain，Jiusteel.

Key words: Specularite, Rotary kiln, Magnetization roasting, Ringing