酸化物と固体炭素との混合物の還元におよぼすメカニカルグラインディングの影響

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The present work reported the effect of structure and mixing state of oxide/carbon ground by Mechanical Grinding (MG) on the oxide/carbon reaction by indirect heating. The mixture of Fe_2O_3 powder and graphite powder was ground for different time by ball mills. The thermo-gravimetric method was carried out in heating-up condition by using the ground mixture. The intensity of X-ray diffraction pattern of the mixture remarkably decreased with increasing of MG time. In particular the intensity of graphite peaks decreased. Reaction temperature of Fe_2O_3 decreased by MG, and temperature range in which the reaction continues expanded. Also reaction temperature of FeO remarkably decreased, and reaction rate of FeO was accelerated with increasing of MG time.
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