Medium Duty Fire Bricks

Kerui medium duty fire bricks can withstand temperatures up to 1750℃(3182℉). It can ensure the safe operation of industrial equipment. If you are interested in purchasing reasonably priced medium refractory bricks, contact us now and get a free quote.

  • Price Advantage: located in Xinmi, the hometown of refractory materials, with abundant resources and affordable prices.
  • After-Sales Advantage: one-on-one tracking service; technical support provided by the chief engineer.
  • Supply Advantage: customized bricks are delivered from the kiln in 3-7 days and standard bricks are shipped directly from stock.
KERUI Medium Duty Fire Bricks

Basic Overview of Medium Duty Fire Bricks

Medium refractory bricks are aluminosilicate refractory products containing 34-40% alumina. They are made of high-quality bauxite raw materials by dry pressing and fired under tunnel kilns. Therefore, they have excellent refractory properties and mechanical strength.

In addition, we mainly use them for the lining of various industrial furnaces. According to different application requirements, we roughly divide medium refractory bricks into silica firebrick, high alumina brick and magnesia brick. Moreover, Keri can customize the composition, shape and size of refractory bricks according to different working environments of customers.

Silica Fire Bricks
Silica Fire Bricks
High Alumina Fire Bricks
High Alumina Fire Bricks
Wonderful Magnesia Bricks
Magnesia Bricks

Technical Data Sheet of Kerui Medium Duty Fire Bricks

Item/IndexUnitMedium Duty Fire Bricks
Apparent porosity%≤24≤24≤26
Cold crushing strengthMpa≥29.4≥24.5≥19.6
Refractoriness under load≥14001350≥1300
Reheating linear change%0 ~ -0.40 ~ -0.30 ~ -0.5
(1450℃, 2h)(1350℃, 2h)(1350℃, 2h)

Significant Performance Advantages of Medium Fire Brick

Medium refractory bricks have a variety of characteristics and properties. In addition to medium refractory bricks, Keri also sells super duty fire brick, thin fire brick, curved fire brick and anchor brick. The characteristics of medium refractory bricks mainly include the following aspects:

  • Refractory performance: medium fire brick can withstand thermal expansion and cold contraction in high temperature environments. Therefore, it is not easily affected by thermal stress and thermal shock.
  • Wear resistance: this refractory brick has good wear resistance. It can resist the impact and wear of materials and extend the service life of equipment.
  • Chemical stability: medium duty firebrick can resist the erosion of corrosive gases and liquids and keep their physical and chemical properties stable.
  • Dimensional stability: Kerui medium fire brick and thin fire brick have good dimensional stability and are not prone to deformation and cracking. That is, they can ensure the stable operation of equipment.

High Quality Medium Duty Fire Bricks
Alumina Bricks
High Alumina Anchor bricks for Sale

Manufacturing Process of Medium Duty Fire Bricks

Kerui Company uses high-quality raw materials and advanced technology for production. The main raw materials include high-alumina bauxite, aluminum silicate, alumina, etc. We strictly screen and proportion these materials to ensure that the finished products have excellent refractoriness and stability. Such as high alumina refractory bricks, aluminum silicate bricks, etc. During the manufacturing process, Kerui uses advanced molding, drying and sintering processes to ensure that each refractory brick has a high density and uniform structure. As a result, this greatly improves its durability and resistance to thermal shock.
Product flow chart of refractory bricks

The Role of Medium Duty Fire Bricks for Sale

Kerui medium duty fire bricks for sale are widely used in various high-temperature industrial fields due to their excellent performance. Besides, Kerui’s YouTube homepage has more introductions to the types and shapes of refractory bricks.

  • Steel smelting industry: used for lining of blast furnaces, converters, electric furnaces and other equipment. It provides effective high-temperature protection.
  • Cement industry: we also use it in rotary kilns, preheaters, decomposition furnaces and other equipment to enhance fire resistance.
  • Glass manufacturing industry: you can use it for the lining of glass melting furnaces to resist the erosion of high-temperature molten glass.
  • Ceramic industry: used for the lining of ceramic kilns to ensure the stable operation of the kiln at high temperatures.

Applications of Kerui Products

Kerui Provides Reliable Medium Duty Fire Bricks

Source Manufacturer

As a source manufacturer, Kerui can directly control product quality. On the one hand, this direct production model improves product stability and reliability. On the other hand, it also avoids the price increase in the middle link, so that our customers can get high-quality products at a more reasonable price.

Cost-Effective Products

Kerui Refractory adheres to the principle of “high quality, low cost” and aims to provide customers with the most cost-effective refractory fire bricks. Therefore, this means that customers do not need to bear excessive costs while enjoying high-quality refractories and truly achieve value for money.

Modern Production Equipment

The application of modern equipment enables Kerui to quickly respond to and meet various customized requirements of customers. At the same time, the efficient operation of the equipment also greatly shortens the delivery cycle, allowing customers to put it into use faster and seize market opportunities.

High Economic Benefits

The low procurement cost and long service life work together to greatly improve the overall economic benefits of customers. Besides, Kerui’s perfect after-sales service system reduces customers’ maintenance and replacement costs, ensuring the continuity and stability of production operations.

High Quality Raw Materials of Medium Duty Fire Bricks
Kerui High Quality Raw Materials
Kerui Tunnel Kiln Production Line of Medium Duty Fire Bricks
Kerui Tunnel Kiln Production Line
Automated Production
Fully Automatic Robotic Arm

Innovation Direction of Kerui Medium Duty Firebrick

In the future, Kerui will continue to be committed to the research and development and innovation of refractory bricks. Kerui plans to introduce more advanced production technologies and equipment to further improve the performance and production efficiency of refractory products.
At the same time, Kerui will strengthen cooperation with scientific research institutions and universities and actively carry out research on new materials and new processes. We aim to develop more refractory materials with high added value and environmental protection characteristics. Besides, in order to meet the needs of the global market, Kerui will also increase investment in international layout and brand promotion. We strive to become one of the world’s leading firebrick manufacturers.
Aerial View of Kerui Factory


By choosing Kerui medium duty fire bricks, you can get excellent product quality and super cost-effective. By choosing Kerui, you also will enjoy our advanced production technology and comprehensive after-sales service. In other words, we aim to provide the most reliable protection and improve economic benefits for your high temperature environment. Contact us now to experience the extraordinary value that Kerui brings to you!

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