为了解决目前通过GB／T 5990—2006测定耐火材料热导率时存在的成本高、周期长、试样制作困难等问题，基于微观结构特征和数值分析技术，提出了一种耐火材料热导率推演方法，并运用该方法推演了高铝砖的热导率。结果表明，数值推演结果与理论计算结果相吻合。推演方法实现了对耐火材料热导率的预测，解决了试验方法测定热导率存在的问题，克服了多孔材料气孔率与其热导率的理论计算公式适用范围有限且不精确的缺点，提供了对热导率推演和设计的高效方法。
The thermal conductivity of refractories was mostly measured by GB/T 5990—2006,which had a lot of shortcomings,such as high cost,long cycle period and having difficulty in specimen preparation.In order to solve these problems,a thermal conductivity deductive method was proposed based on the micro-structure characteristics of refractories and numerical analysis technology,and then it was adopted for a numerical deduction of thermal conductivity on high-alumina bricks.The numerical deductive result coinci-ded with the theoretical one.This method predicted thermal conductivity of refractories,solved problems caused by determination method,and overcame the shortcomings of limit application and non-precision of theoretical calculation formula for porosity and thermal conductivity of porous materials.This method pro-vides an efficient way of thermal conductivity deduction and design.
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