温度和铁水成分对炭砖溶解行为的影响

doi:10.13228/j.boyuan.issn0449-749x.20170554

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摘要为了探究炭砖在铁水中的溶解行为，基于实际炉缸铁水成分配置不同元素质量分数的铁水，将炭砖制成圆柱试样并浸入铁水中，用旋转指棒法进行试验。研究结果表明，碳的溶解反应是炭砖侵蚀的主要反应，扫面电镜发现，反应后界面处炭砖孔径增大。基于旋转指棒法的试验数据，得到了炭砖侵蚀速率与铁水温度及元素质量分数间的定量关系，选取特征参数比较了元素质量分数对侵蚀速率的影响程度。建立了炭砖溶解反应动力学模型，利用模型分析了铁水元素质量分数对反应速率常数的影响，并计算了溶解反应的活化能为46.83 kJ/mol。

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	邓勇
	张建良
	焦克新

关键词 ：高炉, 炭砖, 溶解行为, 定量关系, 动力学模型

Abstract：In order to explore the dissolution behavior of carbon brick in molten iron，molten iron with different element contents was disposed based on actual molten iron composition in hearth. Carbon bricks made of cylindrical specimens were immersed into molten iron to carry out the experiments with rotating finger stick method. The results show that the dissolution reaction is the main reaction of carbon brick erosion，SEM found the hole diameter of carbon brick increase at the interface after the experiment. The quantitative relationship between temperature，element content and erosion was obtained through the experimental results，the characteristic parameters were selected to compare the influence degree of element content on the erosion. The kinetics model of carbon dissolution reaction was established，the effect of element content on the reaction rate constant was analyzed，the activation energy was calculated to be 46.38 kJ/mol.

收稿日期: 2017-11-15 出版日期: 2018-05-11

PACS:

TF 51

引用本文:

邓勇，张建良，焦克新 . 温度和铁水成分对炭砖溶解行为的影响[J]. , 2018, 53(5): 25-31. DENG Yong，ZHANG Jian-liang，JIAO Ke-xin,. Effects of temperature and composition of molten iron on dissolution behavior of carbon brick. Iron and Steel, 2018, 53(5): 25-31.

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