It has practical significance for improving the service life of Al₂O₃-C refractories and reducing its influence on steel quality to reveal the reaction mechanism among (Al₂O₃-C)/Fe system under high temperature. The influence of carbonaceous materials on the interactions among (Al₂O₃-C)/Fe system with temperature and soaking time were studied using thermalgravity method in this paper in order to get a better understanding on the reaction mechanism among (Al₂O₃-C)/Fe system. The weight loss of (Al₂O₃-C)/Fe samples and the formation of Al₂O₃ crystal whiskers along with the change of aluminium and carbon content in iron indicates the mechanism of the effects of carbonaceous materials on the reactions among (Al₂O₃-C)/Fe system under high temperature. The result showed that the aluminium pickup of iron was not only due to the dissolution of Al₂O₃ in molten iron but mostly due to the carbothermic reduction of Al₂O₃ and carbonaceous materials in the presence of molten iron.

揭示（Al ₂ O ₃ -C）/ Fe体系在高温下的反应机理对于提高Al ₂ O ₃ -C耐火材料的使用寿命，降低其对钢质的影响具有现实意义。本文采用热重法研究了含碳物质对（Al ₂ O ₃ -C）/ Fe体系间相互作用的影响，以及温度和保温时间的影响，以更好地理解（Al ₂ O _3）之间的反应机理。-C）/ Fe系统。的重量损失比（Al ₂ ö ₃ -C）/ Fe的样品和Al的形成₂ ö ₃晶须以及铁中铝和碳含量的变化说明了碳质材料对高温下（Al ₂ O ₃ -C）/ Fe体系之间反应的影响机理。结果表明，铁的铝吸收不仅是由于Al ₂ O ₃在铁水中的溶解，而且主要是由于在铁水存在下Al ₂ O ₃和碳质材料的碳热还原。