老的箱式中温电阻炉能耗较高的原因主要是由于炉衬中的耐火材料容重大,导热系数高以至使蓄热量和热损失较大造成的。七十年代出现的硅酸铝纤维毡即为理想的材料之一。它的显著特点是:1.耐温较高,可以在1000℃高温中长期使用,这一点与粘土质耐火材料相近似;2.它的导热系数较低,一般在900℃时为0.14千卡/米、时℃,而作为 The reason why the old box type medium temperature resistance furnace consumes a lot of energy is mainly due to the large volume of refractory lining in the lining and the high thermal conductivity so that the heat storage and heat loss are large. The seventies appear aluminum silicate fiber mat is one of the ideal material. Its distinctive features are: 1. High temperature, can be used at medium and long-term temperature of 1000 ℃, which is similar to the clay refractory material; 2. Its low thermal conductivity, which is generally 0.14 Kcal at 900 ℃ / M, when ℃, and as