Refractory material is the material basis of the glass kiln, which directly affects the overall efficiency of the kiln. In the glass melting furnace, the amount of refractory material is large, and the cost also accounts for the main proportion of the kiln cost. Therefore, the refractory material should be properly configured. It is necessary to comprehensively consider the technical and economic factors, based on the physicochemical properties, structural forms and critical performance of refractories, the operating parameters of various parts of the kiln and the erosion mechanism and mutual reaction of materials at high temperatures, based on the combined accumulation. Detailed knowledge and practical experience on the actual running performance of kiln and refractory materials, material selection and reasonable matching of refractory materials in various parts of the kiln, to achieve equilibrium erosion, and even extend service life and reduce cost and achieve best effect.
Specific Requirements Follows
1 Meet the necessary performance properties such as high temperature performance, chemical stability, thermal stability, volume stability and mechanical strength.
2 Does not pollute the glass, and has little effect on the quality of the glass.
3 The longest possible life.
4 There is no contact reaction between high temperature refractories between different refractory materials.
5 Use as little refractory material and heat loss as possible.
Select Glass Kiln Refractory Material Follows
1 should be selected according to the working environment specified in the glass kiln (the raw material composition and melting requirements of the compound, the temperature system, the atmosphere, the pressure, and the flame condition of the fuel combustion) and the refractory burning and erosion reasons. And configure the corresponding refractory material.
2 Depending on the kiln age of the glass kiln design and the rate of burning and erosion of the refractory materials used in each part of the kiln, the physicochemical performance index that meets the design kiln age and reduces the burning and erosion, and the fire resistance of the appearance should be selected refractory material.
3 At the temperature of use, two different refractory materials that will chemically react should be avoided. If necessary, transition refractory bricks or transition layers should also be provided between two different refractory masonry. Otherwise, the lowest eutectic point will be formed, which will accelerate the burning and erosion of the refractory material, which greatly affects the kiln age of the glass kiln.
4 Refractory materials used in contact with the molten glass should be minimized to avoid horizontal erosion. (especially
fused zirconium corundum bricks), otherwise the erosion rate of the material will increase.
5 When building refractory materials, the required refractory mud should be the same as fire brick. Refractory materials and refractory clays of different materials must not be mixed.
