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中文摘要：
用有大量 H 2/CO 由的 H 2-CO 混合物的赤铁矿小团的减小臼齿(1:0， 3:1， 1:1， 1:3，和 0:1 ) 在不同减少，温度(1073， 1173，和 1273 K ) 在减少炉子的一个节目被进行。基于一个 unreacted 核心模型，在几种情况中的有效散开系数和反应率常数被决定，然后率控制步和转变被分析。在结果，有效散开系数和反应率常数在温度或氢内容与上升增加。用 H 2-CO 混合物的氧化铁小团的减小是一个复合控制系统；反应率被化学反应在开始统治，竞争在减小过程期间随后，并且在结束的内部煤气的散开。在低氢内容，增加温度拿率控制的转变点走到高减小度，但是在转变点上在高氢满足温度的效果变弱。
英文摘要：
Reduction of hematite pellets using H2-CO mixtures with a wide range of H2/CO by molar （1：0, 3：1, 1：1, 1：3, and 0：1） at different reducing temperatures （1073, 1173, and 1273 K） was conducted in a program reducing furnace. Based on an unreacted core model, the effective diffusion coefficient and reaction rate constant in several cases were determined, and then the rate-control step and transition were analyzed. In the results, the effective diffusion coefficient and reaction rate constant increase with the rise in temperature or hydrogen content. Reduction of iron oxide pellets using an H2-CO mixture is a compound control system; the reaction rate is dominated by chemical reaction at the very beginning, competition during the reduction process subsequently, and internal gas diffusion at the end. At low hydrogen content, increasing temperature takes the transition point of the rate-control step to a high reduction degree, but at high hydrogen content, the effect of temperature on the transition point weakens.
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