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Carbothermic reduction kinetics of ilmenite concentrates catalyzed by sodium silicate were investigated; the reduction degree of ilmenite concentrates reduction reaction was determined as R = 4/7(16y + 56x)(ΔW Σ -f A-P W)/(16y + + 56x + 112). The results show that the reaction activation energy of initial stage and later stage is 36.45 and 135.14 kJ/mol, respectively. There is a great change in the reduction rate at temperatures of 1100 and 1150 °C; the catalysis effect and change of reductiondoi:10.2298/ciceq120421077l fatcat:3jni3wuatzbbflcyf4qzkkntha