Abstract: The iron grade of Xuanlong-type Oolitic hematite ore is up to 48.65%.Main iron mineral is hematite,accounting for 85.84% of the total iron,followed by iron carbonate,representing 9.50%.The content of magnetic iron is low,only 3.12%.Gangue minerals are quartz with trace of harmful elements,phosphorus,aluminum,etc..In order to explore efficient,low-consumption development and utilization of the resources,the process of magnetic roasting-low intensity magnetic separation was selected.The results showed that the mass ratio of sample with 0.2 ~ 0 mm bituminous coal and -0.074 mm accounted for 62% as 12%,roasted at 800 ℃ for 45 min,ground the roasted products to 89.2% -0.074 mm,and through the process of low intensity magnetic separation (magnetic field intensity 105.6 kA/m),iron concentrate with iron grade of 62.50% and recovery of 85.50% was obtained.Therefore,the process of magnetic roasting-low intensity magnetic separation is the suitable process to deal with Xuanlong-type oolitic hematite.

Key words: Oolitic hematite ore, Magnetizing roasting, Low intensity magnetic separation