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测定了高炉用自焙碳砖在其自焙烧过程中，导热系数随时间变化规律及其它物理性质·结果表明，自焙碳砖自焙烧过程中导热系数λ与焙烧时间τ可表示为λ＝ ３８３４ ５ ＋ ０００１ ４３ τ·结合鞍钢７ ＃ 高炉生产数据，建立了自焙碳砖陶瓷砌体非稳态热传导的数学模型，并采用数值分析方法对该模型进行了分析求解·其结果表明该模型与实际生产情况比较吻合，除炉底中心部位之外，炉缸耐火材料内衬８００ ℃以上等温线随自焙碳砖石墨化程度的提高逐渐上移至陶瓷砌体层内，从温度场分布角度上看，新型炉缸结构将消除传统结构炉缸所存在弊端，有助于高炉长寿·
The results showed that the thermal conductivity λ and the calcination time τ of self-baking carbon brick during self-baking can be expressed as λ = 3 834 5 +0 001 43 τ · Combined with the production data of No.7 blast furnace in Ansteel, the mathematical model of unsteady heat conduction of self-baking carbon brick-ceramic masonry was established and the model was analyzed and solved by numerical analysis. The results show that the model is in good agreement with the actual production. In addition to the central part of the bottom of the furnace, the isothermal line above 800 ℃ lined with refractories of furnace hearth gradually moves upward into the ceramic masonry layer with the increase of the degree of graphitization of the self- From the perspective of temperature field distribution, the new hearth structure will eliminate the disadvantages of the traditional hearth and help to prolong the life of the blast furnace