通过热重实验获得了873、973和1173 K三个温度条件下不同组成的H2-CO混合气体还原氧化亚铁的动力学曲线,发现在873和973 K时由于析碳反应的发生,动力学曲线较为混乱,没有规律,而在1 173 K时,还原曲线则随还原气体中H2含量(体积分数)的增加表现出明显的规律性.通过H2-CO与H2-Ar气体还原氧化亚铁动力学的比较,混合气体中CO参与反应的速率与其含量(体积分数)基本符合线性关系.还原产物形貌观察的结果表明,随着反应温度的升高,还原产物孔隙增大,铁相充分发育长大并逐渐有明显的烧结现象.
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