Sillimanite bricks are made of sillimanite minerals fired at high temperatures. After high-temperature calcination, they are converted into mullite and free silica. They have high refractoriness, high thermal shock stability, low thermal expansion rate, corrosion resistance to metallurgical slag and various glass liquids, and good high-temperature wear resistance. Its refractoriness is 1770~1830℃, and its load softening temperature is 1500~1650℃. This brick is mainly used for glass furnaces, blast furnace linings, furnace pharynges and ceramic kilns.
1. High refractoriness: The refractoriness of sillimanite high-performance refractory bricks reaches 1770~1830℃, and they can maintain stability in high temperature environments.
2. High thermal shock stability: The mullite structure formed by high-temperature calcination gives the brick good thermal shock stability and reduces the risk of cracking.
3. Low thermal expansion rate: Low thermal expansion rate ensures the dimensional stability of the brick at high temperatures.
4. Corrosion resistance: It has strong corrosion resistance to metallurgical slag and various glass liquids, which improves the service life of the equipment.
1. High temperature equipment such as glass furnaces, blast furnace linings and ceramic kilns.
2. Tin bath top plate in float glass production line.
3. Feeding channels, feeding equipment, tube drawing machines and other equipment in the glass industry.
