- Time:Jul 07, 2023
Kiln refractory bricks are special refractory materials used for lining and insulation inside kilns. Its specifications vary according to specific application scenarios and design requirements. The following are some common specifications that detail kiln refractory bricks:
1. Size: kiln refractory bricks usually have standard sizes, common sizes include 230 x 114 x 65 mm, 230 x 114 x 75 mm, etc. These dimensions are suitable for most kiln construction and masonry.
2. Compressive strength: Compressive strength is a parameter describing the pressure-bearing capacity of refractory bricks, usually in megapascals (MPa). Different types of kiln refractory bricks have different compressive strengths, generally between 10-100 MPa.
3. Refractory temperature: kiln refractory bricks need to be able to withstand the working temperature in high temperature environment. Refractory temperature refers to the highest temperature at which refractory bricks can maintain structural stability for a long time. Different types of refractory bricks have different refractory temperature ranges, and the common refractory temperature is from 1000°C to over 1800°C.
4. Refractory grade: Refractory bricks are divided into different refractory grades according to their resistance to temperature changes and erosion resistance. Common fire resistance grades include SK-32, SK-34, SK-36, SK-38, etc. The higher the grade, the better the fire resistance.
5. Density: The density of kiln refractory bricks is usually expressed in grams per cubic centimeter (g/cm³). Higher density usually means that the refractory brick material is denser and has better mechanical strength and heat resistance.
6. Thermal conductivity: The thermal conductivity of refractory bricks indicates the ability of the material to conduct heat. The thermal conductivity of common refractory bricks is between 1-3 W/(m·K). Lower thermal conductivity means that the material conducts heat poorly, which is suitable for the application of thermal insulation layer.
7. Chemical composition: The chemical composition of kiln refractory bricks has an impact on its refractoriness and erosion resistance. Common chemical components include high alumina, silicate, silicon carbide, etc. Different components are suitable for different application scenarios.
It should be noted that the specifications of kiln refractory bricks may vary according to specific suppliers and application requirements. Therefore, when choosing kiln refractory bricks, it is recommended to consult with professional suppliers or engineers to ensure that refractory bricks with appropriate specifications are selected to meet actual needs.
