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Corundum Refractory Brick Wholesale

Home / Products / Refractory Brick / Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick
  • Corundum Brick,Corundum Mullite Brick,Light Corundum Brick

Corundum Brick,Corundum Mullite Brick,Light Corundum Brick

Application: Applied to a variety of high-temperature kilns, such bricks may be manufactured into saggars, guide rails, ejector plates, refractory slabs, brace plates, burn plates, burner blocks and hearths, furnace tubes, and other refractory products.

Property: High purity for raw materials and high operating temperature, compact and uniform structure, and has anti-oxidation feature.

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Typical Chemical and Physical Index:

Electrofused Corundum Bricks

Corundum Mullite Brick

Lightweight Corundum Bricks

Bulk Density (g/cm³)

≥3.8

2.2-2.9

1.2-1.5

Normal Temperature Compressive Strength (Mpa)

≥70

30-80

15-25

Reburning Line Change℃× hr % ≤

1800×4

0.2

1600×4

0.2

1600×4

0.2

Porosity(%)

≤20

18-25

 

Al2O3 ≥

99

80-90

75-95

SiO2  ％

≤0.5

18-8

23-3

Fe2O3  ％ ≤

0.1

0.2

0.3

Operating Temperature (℃)

1800

1750

1600


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Company
Dongtai Hongda Heat Resistant Material Co., Ltd.
Dongtai Hongda Heat Resistant Material Co., Ltd. is China Corundum Brick Manufacturers and Wholesale Corundum Mullite Brick Suppliers dedicated to the research and development of high-grade insulating refractory products, specializing in the petrochemical, metallurgy, ceramics, new energy, electronics, mechanical heat treatment and other industries. It provides high-quality HJM series of insulating refractory products and amorphous castables.
Founded in 2008 with a registered capital of 20 million yuan, the company is located in Dongtai, Jiangsu Province, the home of China's refractory materials, with a beautiful environment and convenient transportation.
With a complete quality control and assurance system and in strict accordance with the American ASTM standard organization of production, the company has passed the ISO 9001:2015 quality certification in 2010, the ISO 14001:2015 environmental certification in 2019, the ISO 45001:2018 occupational health certification in 2022, achieving total quality management of the production process. We have a variety of domestic advanced manufacturing equipment, including automatic batching and molding lines, 1500 high-temperature tunnel kilns, 1700 shuttle kilns, machining equipment, product firing temperature range from 1200℃ to 1800℃, the current production capacity of 20,000 tons of insulation materials.
The company has the right to import and export agents around the world. Our products not only enjoy a high reputation in the country, but are also exported to Italy, Britain, Spain, South Korea, Japan, India, and other countries and regions by both domestic and foreign customers.
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Material composition of Corundum Mullite Brick

As a high-performance fire-resistant building material, Corundum Mullite Brick's excellent performance is inseparable from its carefully designed material composition. The material is mainly composed of high-temperature refractory materials such as corundum and mullite, and its material composition plays a vital role in its fire resistance, heat resistance and chemical stability.
Corundum Role and Properties
Corundum, one of the main components of Corundum Mullite Brick, is an extremely hard material composed of aluminum oxide crystals. Corundum has a higher melting point, which can reach over 2050 degrees Celsius, making it perform well in high-temperature environments. The combination of its hardness and melting point gives Corundum Mullite Brick exceptional fire resistance, allowing it to withstand extreme high temperature conditions without losing stability. Corundum also has excellent resistance to wear and chemical attack, making Corundum Mullite Brick more durable in practical applications.
The enhancing effect of Mullite
Mullite is another important component, and its addition to the material can significantly improve its shock resistance and heat resistance. Mullite is an aluminum-containing silicate mineral with a special crystal structure that enables it to form a stable structure at high temperatures. In Corundum Mullite Brick, the addition of mullite not only improves the material's shock resistance, but also improves its thermal expansion coefficient, reduces thermal stress caused by temperature changes, and extends the service life of the material.
The role of other auxiliary ingredients
In addition to corundum and mullite, Corundum Mullite Brick may contain some auxiliary ingredients, such as alumina, silica sand, etc. These ingredients play an important role in the preparation of the material. The addition of alumina can improve the fire resistance of the material, and silica sand helps increase the stability of the material. Through reasonable control of these auxiliary ingredients, producers can adjust the properties of materials to suit different industrial needs.
Key steps in the preparation process
The preparation process of Corundum Mullite Brick includes key steps such as powder proportioning, mixing, molding and high-temperature sintering. During the preparation process, the ratio of raw materials needs to be precisely controlled to ensure the ideal content of corundum and mullite. Advanced technology is required during the mixing process to ensure uniform distribution of powder. Pressure and temperature control during the molding stage are also key factors affecting product performance. High-temperature sintering is a decisive step in forming the final structure of the material, which is directly related to the density, hardness and fire resistance of the product.
Advantages compared to traditional refractory materials
The material composition of Corundum Mullite Brick gives it clear advantages over traditional refractory materials. Traditional refractory bricks may be mainly made of clay, kaolin, etc., and their fire resistance and heat resistance are poor. Corundum Mullite Brick is a more reliable choice due to its higher melting point, better resistance to thermal shock and greater abrasion resistance.

Fire resistance of Corundum Mullite Brick

Corundum Mullite Brick stands out for its excellent fire resistance in high temperature industrial applications. Its well-designed material composition and preparation process enable it to perform well under extreme high temperatures and harsh working conditions, making it the material of choice in many industrial fields.
High melting point and thermal stability
One of the distinctive features of Corundum Mullite Brick is that its material contains corundum, a material with high hardness and high melting point. The melting point of corundum exceeds 2050 degrees Celsius, which is much higher than many other materials, allowing Corundum Mullite Brick to maintain structural stability in extremely high-temperature environments. This high melting point and thermal stability make it widely used in high-temperature industrial fields such as metal smelting and glass manufacturing.
Thermal shock resistance
In high-temperature industrial applications, equipment is often subjected to impact from high-temperature gases and liquids, and Corundum Mullite Brick's excellent thermal shock resistance enables it to perform well under such harsh working conditions. Its material composition and preparation process allow it to have a low thermal expansion coefficient, thereby reducing thermal stress caused by temperature changes and extending the service life of the material.
Excellent performance in fire resistance cycle
In the consideration of fire resistance, in addition to the high temperature resistance of the material, it also includes the stability of the material during the cyclic heating and cooling process. Corundum Mullite Brick is highly regarded for its superior performance in the fire-resistant cycle. Its material composition and unique structural design enable it to remain stable under repeated heating and cooling working conditions and is not prone to cracking or failure, providing strong support for the reliable operation of industrial equipment.
Corrosion resistance
In some high-temperature industrial environments, equipment may be exposed to corrosive gases or liquids, and the material composition of Corundum Mullite Brick can effectively resist the erosion of corrosive media. The high chemical stability of corundum and mullite allows Corundum Mullite Brick to maintain its structure and performance in acid and alkali corrosive environments, ensuring long-term stable operation of the equipment.
High thermal conductivity and uniform heating
Corundum Mullite Brick has high thermal conductivity and can conduct heat quickly to ensure uniform heating of equipment in high-temperature working environments. This is particularly important for some industrial processes that require precise temperature control, helping to improve production efficiency and product quality.
Highly customized applications
Corundum Mullite Brick not only provides excellent general-purpose performance, but can also be customized for specific applications. Manufacturers can achieve a higher degree of personalization and customization by adjusting material composition and preparation processes to meet the special requirements of different industrial equipment.