The use of ceramic fireproof modules lined in furnaces is affected by a variety of factors, mainly including the following:
1. Furnace atmosphere: Different furnace atmospheres have different degrees of erosion of refractory materials. For example, waste incinerators tend to have an oxidizing atmosphere, which affects the use of non-oxide refractories such as SiC.
2. Service temperature: Temperature is a key factor affecting the service life of refractory materials. As the temperature increases, the erosion rate increases dramatically, especially for clay and high-alumina refractories.
3. Chemical attack: Slag composition, such as CaD/SiOZ, has a significant impact on the degree of erosion of refractories. Alkaline refractories are more susceptible to changes in slag composition than neutral refractories (e.g. Al₂0₃-Cr₂0₃).
4. Mechanical stress: The mechanical stress experienced by the incinerator, including the thermal stress caused by the temperature gradient, the mechanical stress caused by the poor expansion of the metal frame and the refractory material, and the structural stress caused by oxidation and corrosion, will have an impact on the service life of the refractory.
5. Thermal shock: Refractories need to have good thermal shock resistance to resist stress caused by temperature changes and prevent material cracking.
6. Material selection: Different refractory materials have different performance characteristics, such as corundum mullite material has the characteristics of fire resistance, wear resistance, good thermal shock resistance, etc., while silicon carbide material has the advantages of good corrosion resistance and ash erosion resistance.
In view of these factors, the performance and service life of the furnace-lined ceramic fireproof module can be improved by optimizing the atmosphere control in the furnace, selecting appropriate refractory materials, and designing a reasonable lining structure.