Corundum fire bricks use high-purity corundum as their core raw material and possess advantages such as high temperature resistance, slag corrosion resistance, high strength, and good thermal stability. They can withstand temperatures above 1600℃, making them a core refractory material in high-temperature industrial production. They are widely used in many key industrial fields such as metallurgy, chemicals, building materials, and power generation.
1. Metallurgical Industry
The metallurgical industry is the most important application area for corundum refractory bricks, accounting for the highest consumption.
In ferrous metallurgy, they are mainly used in the hearth, furnace body, and hot blast stove linings of blast furnaces, as well as in the slag lines and impact zones of steelmaking converters, electric arc furnaces, ladles, and refining furnaces. They can resist the erosion of molten steel and iron and slag, extending the service life of the furnace.
In non-ferrous metallurgy, they are suitable for the lining of equipment such as aluminum electrolysis cells and copper-zinc smelting furnaces, resisting corrosion from molten non-ferrous metals and ensuring stable smelting operation.
2. Petrochemical and Coal Chemical Industries
Corundum fire bricks are widely used in the petrochemical and coal chemical industries. Corundum fire bricks can be used as linings for high-temperature and high-pressure equipment such as coal gasification furnaces, synthetic ammonia conversion furnaces, and ethylene cracking furnaces. They effectively resist corrosion from high-temperature flue gas, acid and alkali media, and material erosion, making them suitable for the harsh working conditions of chemical production. They are a core protective material for high-temperature reaction equipment in coal chemical industry.
3. Building Materials Industry
In the building materials industry, corundum fire bricks are mainly used in glass, cement, and ceramic production lines. They are used in critical areas of glass melting furnaces, such as the pool walls and flow channels, which come into contact with molten glass, preventing contamination of glass raw materials and ensuring glass purity. They are also used in cement rotary kiln inlets and cooler linings, as well as ceramic sintering kiln furniture, meeting the continuous high-temperature operation requirements of building materials production.
4. Power Industry
Furthermore, in the power industry, corundum fire bricks are commonly used as protective linings for high-temperature components such as combustion chambers and burners in large power plant boilers. With their excellent heat resistance and wear resistance, they resist the erosion and loss caused by high-temperature flue gas, ensuring the long-term safe and stable operation of power equipment.