Analysis of Reducing Characteristics of Direct Reduced Iron using Blast Furnace Dust

Industrial by-products generated by integrated iron and steel manufacture cause environmental pollution. The by-products contain not only iron element but also harmful substances. Therefore, in view of to waste recycling and environmental preservation, production of sponge iron using the by-product is considered an effective recycling method. In this study, reduction efficiency of pellets from blast furnace dust was measured. Metallization was found to be increased, as C/Fe-total ratio and reaction time were increased. The pellets were formed into a globular shape, and calcined for 60 minutes at 1100 degrees C in an electric furnace. Phase changes were analyzed using an X-ray diffractometer. Microstructures of the pellets were observed by a scanning electron microscope.