Magnetic Concentration of Mn and Fe in Manganese-containing Low Grade Iron Ore

The microstructure of the carbon-containing pellet of manganese-containing iron ore after direct reduction has been studied. On the basis of the microstructure, two kinds of magnetic separation experiments were conducted:the wet and the dry. The result shows:The dry magnetic separation is suitable to concentrate iron. The best iron grade of the magnetic concentrate could reach 82%; The wet magnetic separation is suitable to concentrate manganese. The quality of the nonmagnetic concentrate could meet the requirement of metallurgy industry.