Abstract: College of Resources and Civil Engineering，Northeastern University，Shenyang 110819,China Magnetic roasting-low intensity magnetic separation experiment was conducted with neutral atmosphere on siderite iron ore from Daxigou.The results showed that iron concentrate with iron grade of 57.09% and iron recovery 90.17% can be obtained under roasting temperature of 650 ℃，roasting time of 40 min with neutral atmosphere，roasted products ground to 95% passing 0.043 mm，then via low intensity magnetic separation at field intensity of 104 kA/m.There is 12.03% SiO₂，iron increase and silicate decrease experiment was needed to increase the concentrate property.Siderite and limonite in ore transformed into magnetite with high intensity magnetism，the magnetization and magnetic susceptibility of roasted products were greatly increased compared with raw ore，expand the difference of magnetism between iron mineral and gangue minerals，effective separation can be realized through low intensity magnetic separation.

Key words: Siderite, Neutral atmosphere, Magnetization roasting, Low intensity magnetic separation