The conclusion of the industrial test of polycrystalline mullite refractory fiber of glass fiber cloth: In the past two years, through the industrial test of polycrystalline mullite refractory fiber in different furnace types, different heating processes and different fuels, the following opinions have been formed and suggest:
1) It is successful to use polycrystalline mullite refractory fiber product veneer in small and medium-sized steel rolling heating furnaces that burn gas, especially for rod and wire heating furnaces. It can significantly improve the heat sensitivity of the furnace and also adapt to the automatic control of the furnace. . It is more obvious in the quality of heating billets and reducing energy consumption. In the past ten years, the bar heating furnace of the small rolling mill of Anshan Iron and Steel Company and the wire rod heating furnace of Baotou Iron and Steel Company, etc., have met the actual requirements and passed the corresponding requirements. The technical appraisal of the former Ministry of Metallurgy.
2) If the furnace temperature of the continuous heating furnace is higher than 1300C, it is not suitable to use polycrystalline mullite refractory fiber composite lining, and the oil-burning heating furnace should not use polycrystalline mullite refractory fiber composite and veneer lining.
3) If the temperature of the intermittent heating furnace is less than 1300C, polycrystalline mullite refractory fiber composite and veneer lining can be used, and the veneer lining can be used on the oil-burning furnace. 4) On the electric heating furnace, the furnace temperature is about 1400C, and polycrystalline mullite refractory fiber composite lining can be used.