zhengzhou kerui (group) refractory co.,ltd
Provide Leading Solutions for High Temperature Kilns

Mullite Refractory Bricks

As a kind of high-grade refractory material, mullite refractory bricks are well-known because of high performance and wide applications. Kerui is a professional mullite brick manufacturer in China. Please take Kerui high-quality mullite bricks for sale into consideration.

  • 62-70%

    Al2O3 (≥)

  • 1760-1780℃


  • 26-28%

    Apparent Porosity

  • 25MPa

    Cold Crushing Strength


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Kerui Mullite Refractory Brick for Sale

What are Main Compositions of Mullite Refractory Brick?

Main Compositions of mullite refractory bricks are 60%-75% Al2O3 and 24%-35% SiO2. Al2O3 has high melting point and brings higher heat resistance for mullite brick. SiO2 is a kind of acid material, which enhances corrosion resistance of mullite brick. Mullite refractory brick is a kind of high-grade refractory material. The refractoriness is as high as 1790℃ (3254℉). Another important function of SiO2 is to combine Al2O3 and form mullite phase. Kerui firebrick supply controls compositions of mullite brick accurately. As a result, Kerui can supply fire bricks that have high properties.

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Kerui Customized Brick

Kerui Mullite Refractory Brick for Sale

Kerui provides different kinds of mullite refractory bricks for sale. With annual output of 150,000 tons, Kerui has the ability to large-scale production of mullite bricks.

ω (Al2O3)/%μ070.0 62.0
ω (Fe2O3)/%μ01.81.5
Apparent Porosity/%μ02826
Cold Crushing Strength/MPaμ025
Permanent Linear Change (1500℃*2h)/%Xmin~Xmax-0.1~+0.4

Different Classifications of Kerui Mullite Refractory Brick

Kerui Sintered Mullite Refractory Brick

Sintered Mullite Refractory Bricks

Sintered mullite refractory brick refers to putting molded mullite brick into tunnel kilns for drying and sintering. Kerui intelligent PLC system controls the temperature and position of bricks in tunnel kilns. The structure of sintered mullite refractory brick is denser.

Kerui Fused Mullite Refractory Brick for Sale

Fused Mullite Refractory Bricks

For fused mullite refractory brick, original mullite will be melted in electric furnace and then poured into molds. After fusing, the purity of mullite brick is higher. Fused mullite brick is suitable for customers who have higher requirements.

Corundum Mullite Refractory Brick

Corundum Mullite Refractory Bricks

Kerui corundum mullite brick is a special material mixed with corundum and mullite minerals. Due to the excellent combination, this brick has high compressive and flexural strength. Besides, it’s suitable as the lining of kilns with extreme enviornment.

Excellent Performances of Kerui Mullite Refractory Brick

Stable in High Temperature Conditions

Kerui mullite refractory bricks can withstand high temperatures of at least 1790℃ (3254℉). Because we use raw materials with less impurity for production. It means Kerui mullite refractory brick have high refractoriness and high resistance to thermal shock. Many customers choose this high quality fire brick to keep the stability of high temperature kilns and furnace.

Good Creep Resistance

The chemical composition of mullite is dense and hard, which forms good creep resistance. This means it maintains its shape and dimensional stability even when subjected to long-term thermal loads. This property is crucial for applications where the refractory material is subjected to constant stress and high temperatures over extended periods.

Strong Resistance to Chemical Corrosion

One of the remarkable mullite bricks properties is its resistance to chemical corrosion. It exhibits excellent stability when exposed to acidic or alkaline environments, making it suitable for applications where corrosive gases, liquids or solids are present. The brick’s chemical resistance helps maintain its structural integrity and performance over extended periods, reducing maintenance needs and enhancing operational efficiency.

Good Electrical Resistivity

This product has good electrical resistivity. It’s an ideal choice for applications that require electrical insulation. This high temp fire brick effectively prevents the flow of electric current and the conduction of charges. Besides, the characteristic is particularly valuable in electric furnaces, resistance heating systems and other electrical equipment operating in high-temperature environments.

Excellent Mullite Brick in Kerui
Excellent Mullite Brick in Kerui Factory

Extensive Applications of Kerui Mullite Refractory Brick

Steel and Iron Industry

In the steel and iron industry, Kerui mullite bricks properties are able to bear intense heat generated during the steel and iron making process and ensure structural integrity. When used in steel and iron industry, this brick is suitable for blast furnaces, hot blast stoves, steel ladles and so on.

Glass Industry

Actually, the mullite brick is significant in glass industry. Because this brick has excellent resistance to chemical corrosion. In glass manufacturing, these bricks are used in the refractory linings, construction of furnaces, tank regenerators, checkers and many other parts of glass making furnaces.

Cement Industry

The cement manufacturing process has high requirements on the hardness of brick. Because it will cause strong shock and abrasion. The mullite refractory bricks from fire bricks manufacturing contribute to the overall efficiency and durability of the cement manufacturing process.

Power Industry

To withstand the intense heat and corrosive conditions in power industry, customers had better choose mullite brick for the high temperature kiln. This brick can also help maximize energy efficiency and reduce heat loss in power plants.

Non-ferrous Industry

The non-ferrous industry requires mullite bricks with high melting points and resistance to chemical corrosion. Therefore, Kerui mullite refractory bricks atre extensively employed in the construction of smelting furnaces, converters, refining vessels and other positions.

Environmental Industry

Due to thermal shock and erosion by acidic gases caused in environmental equipment, Kerui mullite bricks play a significant role. When customers use this brick in waste incineration and hazardous waste treatment facilities, it can realize safe and effective production.

Applications of Kerui Products

Is Mullite Refractory Brick Expensive?

No, Kerui mullite refractory brick is NOT expensive! It’s well-known that Kerui provides affordable mullite refractory brick in this industry.

Compared with other mullite brick suppliers, Kerui stands out for our reasonable refractory brick price and superior mullite bricks. As an original mullite brick manufacturer, Kerui assures customers of ex-factory price. Buy mullite refractory bricks from Kerui Refractory, you can get cost-effective solutions.

Factors Influence the Mullite Brick Price

Cost of Raw Material

As the main material of mullite bricks, mullite is derived from high-purity alumina and silica. The cost of alumina and silica affects mullite brick price directly. Kerui is located in Xinmi City, Henan Province, which owns rich mineral resources for refractory. That is an important reason why Kerui offers reasonable mullite brick price.


Higher performance of mullite brick results in higher price. Because mullite refractory brick manufacturers need to control raw materials with high quality and more strict quality control to ensure better performance. At Kerui, we always adhere to industry-leading quality control and won’t add the price of mullite bricks for sale.

Solution of Mullite Bricks Manufacturer

If customers have additional requirements on the size or shape for mullite bricks, the price may be higher. Besides personalized solution on the mullite brick itself, Kerui also offers integrated solutions that include consultation support, engineering expertise, delivery service as well as installation services.

Top Mullite Brick Manufacturer in China – Kerui Refractory

Leading Production Technology

Kerui continuously invests in research and development to improve production efficiency and product quality. As a result, Kerui is able to provide large quantities of mullite bricks for sale and innovates new type of refractory brick to save customers project costs.

Certificates of Mullite Refractory Brick

With commitment to quality and excellence, Kerui is validated by ISO and SGS. Besides, Kerui obtained invention patent certificates and more than 20 utility model patent certificates, which stands for a reliable mullite refractory brick manufacturer.

Kerui CE Certificate
CE Certificate
Kerui QMS Certificate
QMS Certificate
Kerui OHSM Certificate
OHSM Certificate
Kerui EMS Certificate
EMS Certificate

Considerate Service

From pre-sales consultation to after-sales support, Kerui Refractory ensures that customers receive personalized attention and prompt assistance. By prioritizing customer satisfaction, Kerui has built long-term relationships and become a trusted partner in the industry. You can also contact Kerui via Youtube.

Rich Export Experience

Kerui Refractory exports mullite refractory bricks to more than 30 countries and covers about 2,000 customers. Our professional and experience team is confident to provide suitable solution for you. With superior quality and responsible service, Kerui wins good reputation in the worldwide market.

Reliable Mullite Refractory Brick Supplier

It’s necessary to buy mullite refractory bricks of better quality and from reliable manufacturers. Kerui Refractory sincerely recommends you purchase mullite bricks from Kerui. Because Kerui is confident to provide high quality mullite bricks with considerate service.

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