|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||Non-isothermal Reduction Kinetics of
Roasted High Alumina Iron Ore Pellets
||Zuoliang Zhang, Ren CHEN
|On-Site Speaker (Planned)
Non-isothermal reduction of roasted Guangxi high alumina iron ore pellets with CO and H2 was conducted with NETZSCH STA 409C/CD. Non-isothermal kinetics analysis was carried out and kinetics data were obtained. The activation energy values of CO and H2 reduction are 295.82kJ∙mol-1, and 185.42kJ∙mol-1, respectively. Their reaction rate constants can be expressed by kCO=1.71*108e(-295820.5/T) and kH2 =1.36*105e(-185422.4/T), respectively. When the temperature is lower than 1357K, the reaction rate constants of the two gases reduction are in good agreement. But when the temperature is higher than 1357K, the level of the reaction rate constant of H2 reduction higher than that of CO reduction increases sharply.