Study on Differential Thermal Analysis and Single Burning Experiment of Vanadium-titanium Ore Powder

Mineral phase structure,differential thermal analysis and sintering experiment had been performed on three kinds of iron concentrate powder.Phase structure results show all three kinds of iron ore fines are typical magnetite iron grade with lower content of SiO₂,and higher TiO₂,Al₂O₃,FeO.Differential thermal analysis result indicates that all three kinds of ore dominate by magnetite and show no sign of hematite covering magnetite.Besides,all present lower initial temperature when slag weight gain,same slope of high-temperature range TG curve,and satisify magnetite oxidation kinetics conditions.All ore powders are characterized by slow sintering,lower exhaust gas temperature,low burning rate and lower drum index as well.Heishan concentrate shows lowest tumbler index of 55.33%,however,this value increase up to 64.40% after mixing sintering.