Studies on the Mechanical and Physical Properties of Hematite Iron Ore Pellets Prepared Under Different Conditions

The global iron-producing industries are trying to use the high alumina content iron ores due to the exiguity of high-grade ores and economic reasons. For this purpose, this present study focuses on the utilization of high alumina hematite iron ores obtained from eastern part of India in pelletization experiments. The effects of firing temperature and time, and binder addition on compressive strength, porosity and XRD analysis of resultant pellets were investigated. The experimental results showed that the amount of Al2O3 in the iron ore pellets did not show a much variation on the compressive strength (< 100 N) and porosity with increase in temperature up to 1373 K, followed by a gradual change in their values with further rise of firing temperature up to 1573 K. The X-ray diffraction patterns of resultant fired hematite iron ore pellets did not show any change in the major phase.