Abstract: There is 33.84% iron in feeding of vertical furnace in Jiugang Plant， main useful iron ores are specularite， limonite， siderite， gangue minerals are mainly quartz， and the content of harmful element P is low. In order to solve the problem of poor separation index of Jiugang specularite by conventional separation method， the magnetic roasting-grinding-low intensity magnetic separation method was used to the study on representative sample. Results show that the concentrate with iron grade 59.12%， and iron recovery of 81.31% can obtained under the conditions of roasting temperature 650 ℃， roasting time 5 min， CO concentration 30%， total gas volume 500 mL/min for magnetizing roasting， the roasted products ground to 82% of -0.074 mm， via low intensity magnetic separation in 119.4 kA/m. The main harmful impurities Al2O3 and P in concentrate is relatively lower， and can meet the requirements of smelting raw materials. The research conclusion provided a basis for the development and utilization of Jiugang specularite ore， and has guiding significance for the development and utilization of the same type of ore.

Key words: Refractory iron ore, Specularite, Magnetization roasting, Low intensity magnetic separation