不同材质钢包内衬烘烤过程中温度场的数值模拟

Numerical simulation for temperature field of ladle linings of different materials during baking

为了预防钢包衬因烘烤不当而引起的严重损毁，采用数值模拟法构建了钢包烘烤过程的数值模型，模拟分析了高铝质、铝镁碳质、镁碳质耐火材料内衬在烘烤过程中的温度分布情况。结果表明：烘烤18 h内，烘烤趋于稳定后，镁碳砖各点温度均比铝镁碳砖高20～30℃，比高铝砖高50～60℃；相同材料特殊取点的最高与最低温度的差值，高铝砖为197．4℃，铝镁碳砖为140．6℃，镁碳砖为133．3℃。可见，从升温能力到包衬温度均匀性，镁碳砖均最优。

To avoid the serious ladle damage caused by inappropriate baking,a numerical model for ladle baking was constructed with the numerical simulation method.The temperature distributions of refractory linings of high alumina bricks,alumina magnesia carbon bricks and magnesia carbon bricks,respectively, during baking were studied.The results show that the temperatures of magnesia carbon bricks are 20 -30 ℃and 50-60 ℃higher than those of the alumina magnesia carbon bricks and high alumina bricks after the baking tend to be stable within 18 h,respectively.The maximum and minimum temperature difference of different positions in the same material lining for high alumina,alumina magnesia carbon and magnesia carbon bricks is 197.4 ℃,140.6 ℃ and 133.3 ℃,respectively.The magnesia carbon bricks perform the best on the heating capacity and the lining temperature uniformity.