Due to reduced iron into the furnace system block moisture content of less than 3%, bulk material in the furnace preheat time, the furnace permeability, charge and smoke with inverse kinematics, saving energy, reducing the flue gas total emissions, reduced iron mention the unit concentration of sulfur dioxide. A small amount of smoke, no soot separate processing equipment. Full vent area smelting blast furnace there are semi-self-heating and melting characteristics of self-heating, high thermal efficiency, accelerate the reaction speed metal materials, sulfur and oxygen-rich combustion of coke adequately improve the productivity (ie bed can rate).