Effect of Mechanical Carbon Coating on Reduction of Magnetic Ore Powder

摘要

The growth of iron whiskers during the reduction of iron ore fines is the main cause of fluidized bed bond loss. In this paper, the influence of mechanical carbon coating on the reduction behavior of magnetic ore powder is studied in detail. Firstly, the reduction kinetics of bituminous coal-coated magnetic ore powder and anthracite-coated magnetic ore powder under different conditions is studied. Then, the influence of reduction temperature on the surface morphology of bituminous coal-coated magnetic ore powder and anthracite-coated magnetic ore powder after reduction is studied. The scanning electron microscope results show that the carbon source of bituminous coal-coated magnetite ore powders can effectively inhibit the formation of iron whiskers in the reduction process of iron ore powders.