OXIDATION-KINETICS OF GRAPHITE PHASE IN MAGNESIA-CARBON REFRACTORIES
OXIDATION-KINETICS OF GRAPHITE PHASE IN MAGNESIA-CARBON REFRACTORIES
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DOI：
10.1111/j.1151-2916.1995.tb08423.x
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发表时间：
1995-04-01
影响因子：
3.9
通讯作者：
PALCO, S
中科院分区：
文献类型：
--
作者：
LI, XM;RIGAUD, M;PALCO, S
树脂结合镁碳质耐火材料的脱碳作为其在使用过程中砖衬性能的最重要参数之一，已在空气中1000℃至1400℃的温度范围内进行了动力学研究，其中氧气对碳的烧尽是主要的脱碳机制。通过气体分析来追踪碳的烧尽速率，测量转化为二氧化碳的一氧化碳量随反应时间的变化。利用针对氧化动力学提出的数学模型对实验结果进行了合理的解释，其中从外部环境向内扩散氧气的速率是主要的。
Decarbonization of resin-bonded magnesia-graphite refractories, as one of the most important parameters for brick lining performance in service, has been studied kinetically in the temperature range from 1000 degrees to 1400 degrees C in air, where carbon burnout by oxygen is the dominant decarbonizing mechanism. The rate of carbon burnout was followed by gas analysis, measuring the amount of CO converted into CO2 as a function of reaction time. The experimental results have been rationalized using a mathematical model proposed for the oxidation kinetics, wherein the rate of inward diffusion of oxygen from the exterior atmosphere is predominant.