昆钢新区2500m^3高炉炉缸炉底侵蚀模型

Erosion model of hearth and bottom for the 2500 m^3 BF in KISC new industrial park

为了分析投产初期高炉炉缸炉底的温度分布情况,以经典传热模型为基础,采用有限元计算技术,建立了昆钢新区2 500 m^3高炉炉缸炉底侵蚀模型。本模型以高炉开炉初期温度为基础,绘制出炉缸炉底温度场分布曲线,模型计算值与热电偶实测值相比,误差在-6.52%^+7.69%的范围内,表明模型计算较为准确。根据模型计算结果,提出了加长风口小套长度、提高鼓风动能和加大死铁层厚度等工作建议,为制定高炉合理的操作维护方针和完善高炉长寿设计提供重要参考。

To analyze temperature distribution of hearth and bottom in the initial of the BF blown-in,the erosion model of the 2 500 m^3 BF hearth and bottom was established in Kunming Iron Steel Holding Co.,Ltd.（ KISC） New Industrial Park,using classical heat transfer model as the foundation and combining with the finite element method. The model drew out the temperature field distribution curve of the hearth and bottom based on the temperature of the initial of BF blown-in. Compared with thermocouple measured values,the error of the model calculation values was from- 6. 52 % to ＋ 7. 69 %,which showed that the model calculation was relatively accurate. According to the result of model calculation,some suggestions were proposed,such as lengthening the tuyere small sleeve length,enhancing blast momentum and increasing dead iron layer thickness. These provided an important reference for making reasonable operation and maintenance polices and improving the design of BF life.