Carbothermal reduction of fayalite: Thermodynamic and non-isothermal kinetic analysis

The present paper investigated the thermodynamics and kinetics of carbothermal reduction fayalite by non-isothermal method combining with thermogravimetric analyzer applying Flynn-Wall-Ozawa (FWO) M?lek models. According to thermodynamic analysis, starting temperature direct reaction was 806.79? in standard state. indirect could not take place While volume percentage CO higher than 86 vol.% nonstandard state, range experimental temperature. Meanwhile, Boudouard promote process. kinetic analysis results showed that at below 1100?, main between graphite. With increasing, reacted generated from gasification When rate increased 0% 50%, activation energy 524.41 kJ/mol. Then, decreased increase rate. a multistep reaction. controlling step initial stage As proceeded, provided good condition for fayalite, nucleation growth metallic iron.