What is High Temperature Alumina Refractory Brick?
At room temperature, the thermal conductivity of aluminum oxide is half that of aluminum metal, which decreases with increasing temperature. The thermal shock resistance of Alumina Refractory Brick depends on its microstructure and the shape and size of the product. Generally speaking, its thermal shock resistance is moderate. In short, alumina has the characteristics of high-temperature resistance, high strength, high hardness, oxidation resistance, electrical insulation, corrosion resistance, and good airtightness. Therefore, as a special refractory raw material, alumina is widely used.
High-temperature Alumina Refractory Brick
When choosing high-temperature alumina refractory bricks, you need to know what industry’s thermal equipment is used, what parts are used, what are the requirements for use, what is the heat source, and what is the appropriate alumina content? Only by understanding this specific information can we purchase the appropriate alumina refractory bricks. The prices of high-temperature alumina refractory brick are high and low, and the higher the alumina content, the more expensive the refractory bricks. In addition, there are sintered and fused cast bricks, the prices of these bricks are also different.
Common alumina refractory bricks are clay bricks, high alumina bricks, mullite bricks, corundum bricks, etc. In actual use, the unit weight of large clay refractory bricks for glass kiln is not less than 50kg. Since the price of high-alumina bricks is higher than that of glued bricks, it is not necessary to use high-alumina bricks where clay bricks can meet the needs of use in order to save costs.
Application of Alumina Refractory Brick
The characteristics of alumina refractory bricks are high-temperature resistance, corrosion resistance, high strength, and high performance. Alumina brick can be used as a sliding nozzle, immersion nozzle. It is also used for crucibles and structural parts of high-purity metallurgy or single crystal growth. Alumina refractory brick is also used for heat-resistant and anti-oxidation coatings of various high-temperature furnaces such as furnace walls and furnace linings.
- Alumina (corundum) special refractory bricks. Because of its good high-temperature performance and lower ratio, it is widely used. High purity, high density, high-performance corundum refractory bricks are widely used in large blast furnaces and ladles.
- It is also the lining material of secondary furnace, gasification furnace, and ethylene cracking furnace of the large-scale ammonia plant.
- Corundum bricks with high thermal stability are used as lining materials for firing furnaces for special materials and products, electric molybdenum silicide furnaces, and other ultra-high-temperature furnaces. High-quality corundum bricks are also used in hot blast stoves for MHD power generation.
- Alumina bubble bricks and alumina fiber products are high-temperature energy-saving products. Due to its small bulk density and low thermal conductivity, it is an ideal lining material for energy saving and energy consumption reduction.
Alumina Brick Manufacturer
Rongsheng is a manufacturer of refractory bricks and refractory castables. Our refractory products have been sold to more than 60 countries around the world. Such as Malaysia, South Africa, India, Indonesia, Pakistan, Netherlands, Kuwait, Kenya, Russia, United States, Philippines, Vietnam, etc. To purchase high-quality high-temperature alumina refractory brick, please leave your specific requirements in the contact form on the page. We will reply to you as soon as possible.