• Insulating Fire Brick - Mullite Jm 31 Refractory Brick System 1
  • Insulating Fire Brick - Mullite Jm 31 Refractory Brick System 2
  • Insulating Fire Brick - Mullite Jm 31 Refractory Brick System 3
  • Insulating Fire Brick - Mullite Jm 31 Refractory Brick System 4
Insulating Fire Brick - Mullite Jm 31 Refractory Brick

Insulating Fire Brick - Mullite Jm 31 Refractory Brick

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
20 m.t.
Supply Capability:
20 m.t./month

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General Information

CMAX insulating firebricks are classified under temperature between 1300℃ to 1700℃, manufactured from high purity alumina clay.

1. Lower content of iron, alkaline and impurities, good high temperature properties.
2. Homogeneous structure, light weight, energy saving because lower heat storage in the furnace during cooling cycles.
3. High strength, good thermal shock resistance under high temperature.
4. Precise sizes due to grinding and shaping after sintering, which meets the requirement of construction.
5. Max service temp: Up to 1730C (3160F)

 

Feature
Light weight and low thermal conductivity    
Low heat storage  
Low iron and impurities  
High thermal shock resistance

 

Application of Insulating brick

Metallurgical Industry: blast furnace, hot blast furnace, heating furnace, etc..

Petrochemical Industry: ethylene cracking furnace, hydrogen furnace, the main furnace, heating furnace, etc..

Ceramic industry: roller kiln, kiln, etc..

Glass industry: glass furnace regenerator, etc.

Carbon industry: carbon furnace, etc..

Aluminum electrolysis industry: aluminum reduction cell, etc.

Other industries: tunnel kiln, shuttle kiln, etc.

 

Advantages of heat insulation brick

Low thermal conductivity: many air holes will bring good thermal insulation effect, energy saving.

High crushing strength: high crushing strength, volume stability.

Low heat storage: small heat storage, absorb more heat, energy-saving effect is obvious.

 

Technical Data

ITEM

GJM30

GJM28

GJM26

GJM23

Classification       Temperature, /          

3000/1650

2800/1540

2600/1430

2300/1260

Bulk       Densityg/cm³  

≤1.0

≤0.9

≤0.8

≥0.5

Reheating       Linear Change, %

 ≤0.9                     (1550℃,12   h)  

            ≤0.8                          (1510℃,12   h)

            ≤0.7                             (1410℃,12     h)

 ≤0.5                         (1230℃,12   h)  

Al2O3       Content, %           

≥75

≥65

≥55

≥45

Fe2O3       Content,       %                   

≤0.5

≤0.6

≤0.7

≤1.0

Thermal       Conductivity:      

 800℃,   w/m.k     

≤0.39

≤0.37

≤0.35

≤0.18

 1000℃,   w/m.k

≤0.43

≤0.41

≤0.39

≤0.20

 1200℃,   w/m.k

≤0.48

≤0.46

≤0.43

---

Insulating brick

Refractory Mullite Insulating Refractory Brick JM 31

Refractory Mullite Insulating Refractory Brick JM 31

Common problem solution

1. What products do you have?

We have all kinds of refractory bricks, refractory casting materials, mortar, cement, ceramic fiber products, etc..

Or you can browse our products to choose what you need.

2. How to control product quality?

With strict quality control system throughout the material selection and production process, we have the quality of refractory materials and ceramic fiber products to meet customer requirements.

From the selection of raw materials, the quality of our control to start. The quality of the raw materials required for each batch of products in the use of the front line test. In the production process, through the quality control of workers, and then to each piece of classification, and through quality supervision and inspection.

3. Could you give me a brief introduction to the application of your product?

My Company is mainly engaged in steel, cement, glass, ceramics, petrochemical, electric power and other industries.

4. If I need you, what kind of information do you need?

In order to select the right products, we will provide us with information, such as the United States, technical data, order quantity, product applications, etc..

If you have any questions, please contact us.


Q: Do insulating fire bricks have a high resistance to spalling?
Yes, insulating fire bricks have a high resistance to spalling.
Q: Are insulating fire bricks resistant to water absorption?
Yes, insulating fire bricks are resistant to water absorption. These bricks are specifically designed to have low porosity and high density, which helps prevent water from being absorbed into their structure. This resistance to water absorption is important because exposure to water can lead to cracking or damage in fire bricks, reducing their insulation properties and overall longevity. Therefore, insulating fire bricks are an ideal choice for applications where moisture resistance is required, such as in the construction of kilns, furnaces, or other high-temperature environments.
Q: Can insulating fire bricks be used in the construction of incineration kilns?
Yes, insulating fire bricks can be used in the construction of incineration kilns. These bricks have excellent thermal insulation properties, which helps in maintaining high temperatures inside the kiln while minimizing heat loss to the surroundings. This is crucial in incineration processes where high temperatures are required to efficiently burn waste materials. Additionally, insulating fire bricks are resistant to thermal shock and can withstand the extreme temperatures and harsh conditions typically found in incineration kilns.
Q: How do insulating fire bricks affect the overall weight capacity of a structure?
Insulating fire bricks can have a significant impact on the overall weight capacity of a structure. These bricks are specifically designed to have low density and high thermal insulation properties, which means they are lightweight compared to traditional dense firebricks. By using insulating fire bricks, the overall weight of the structure is reduced, allowing for more weight to be allocated to other components or materials. This is particularly beneficial in situations where weight restrictions are a concern, such as in aerospace, automotive, or marine applications. Moreover, the lightweight nature of insulating fire bricks reduces the overall load on the foundation and supporting structures. This can help prevent structural damage and increase the safety and longevity of the entire structure. However, it is important to note that while insulating fire bricks are lighter, they may have slightly lower compressive strength compared to dense firebricks. Therefore, it is crucial to carefully consider the specific requirements of the structure and ensure that the chosen insulating fire bricks can withstand the anticipated load and stresses. In summary, insulating fire bricks positively affect the overall weight capacity of a structure by reducing its overall weight and decreasing the load on supporting structures. However, it is essential to consider the specific application and choose the appropriate insulating fire bricks to ensure structural integrity and safety.
Q: Can insulating fire bricks be used in contact with molten metal?
Indeed, it is possible to utilize insulating fire bricks in direct contact with molten metal. Specifically engineered to endure extreme temperatures, these bricks are widely employed in industrial settings where they encounter molten metal. With their exceptional resistance to thermal shock, they are capable of withstanding the intense heat generated by molten metal. Furthermore, insulating fire bricks possess low thermal conductivity, thereby reducing heat loss and enhancing energy efficiency. However, it is crucial to ascertain that the specific variant of insulating fire brick employed is suitable for the specific type of molten metal and temperature range it will be exposed to. Different metals possess varying melting points, which may necessitate the use of more specialized refractory materials.
Q: Are insulating fire bricks suitable for insulation in petrochemical plants?
Insulating fire bricks, which are composed of lightweight materials with exceptional insulating properties like ceramic fibers or lightweight refractory aggregates, are well-suited for insulation in petrochemical plants. These bricks possess a low thermal conductivity that effectively curbs heat transfer and provides insulation in high-temperature settings. In petrochemical plants, where the manipulation of flammable and hazardous substances occurs, maintaining proper insulation is of utmost importance for safety and efficiency. By withstanding extreme temperatures and delivering superb thermal insulation, insulating fire bricks effectively curtail heat loss and diminish energy consumption. Moreover, insulating fire bricks exhibit resistance to chemical corrosion, rendering them suitable for deployment in petrochemical plants frequently exposed to corrosive chemicals. Additionally, these bricks demonstrate durability and commendable mechanical strength, enabling them to endure the harsh conditions typically encountered in petrochemical plants. All in all, insulating fire bricks emerge as the ideal choice for insulation in petrochemical plants due to their capacity to withstand high temperatures, exceptional thermal insulation properties, resistance to chemical corrosion, and remarkable durability.
Q: Do insulating fire bricks have a high fire resistance rating?
Yes, insulating fire bricks have a high fire resistance rating. Insulating fire bricks are specially designed to withstand high temperatures and provide excellent insulation against heat transfer. They are made from high-purity refractory materials, such as alumina and silica, which have a high melting point and can withstand extreme heat. These bricks are capable of withstanding temperatures of up to 3000°F (1650°C) and have a thermal conductivity that is much lower than regular bricks or other materials. This makes them ideal for use in applications where high fire resistance is required, such as in industrial furnaces, kilns, fireplaces, and chimneys. Additionally, their insulating properties help to reduce heat loss, making them energy-efficient and cost-effective.
Q: Can insulating fire bricks be used in refractory cement?
Yes, insulating fire bricks can be used in refractory cement. Insulating fire bricks are specifically designed to withstand high temperatures and provide excellent insulation, while refractory cement is used to bind and seal refractory materials. By using insulating fire bricks in refractory cement, it can enhance the overall insulation properties and improve the performance of the cement in high-temperature applications.
Q: How does the density of an insulating fire brick affect its performance?
The density of an insulating fire brick plays a crucial role in determining its performance. Generally, a higher density brick will offer better thermal insulation and mechanical strength compared to a brick with lower density. The thermal insulation property of an insulating fire brick is directly affected by its density. A brick with higher density will have smaller pores and a more compact structure, resulting in better insulation against heat transfer. This means that the brick will be able to effectively resist the transfer of heat from one side to the other, making it more efficient in maintaining a consistent temperature within the structure it is used in. On the other hand, a brick with lower density will have larger pores and a less compact structure, allowing for more heat transfer and reducing its insulating capabilities. In addition to thermal insulation, the density of an insulating fire brick also impacts its mechanical strength. A higher density brick will generally have greater structural integrity and resistance to mechanical stress. This means that it will be more reliable and durable, capable of withstanding higher temperatures and physical pressures without cracking or breaking. On the contrary, a brick with lower density may be more fragile and prone to damage, limiting its ability to perform in harsh conditions. Therefore, it is important to consider the density of an insulating fire brick when selecting one for a specific application. A balance needs to be struck between achieving optimal thermal insulation and mechanical strength. Factors such as the desired level of insulation, the operating temperature, and the structural requirements of the application should be taken into account to determine the appropriate density of the insulating fire brick for maximum performance.
Q: Can insulating fire bricks be used in the construction of industrial boilers?
Yes, insulating fire bricks can be used in the construction of industrial boilers. Insulating fire bricks are specially designed to have low thermal conductivity, which means they are excellent at retaining heat and are ideal for applications where high temperatures need to be maintained. In the case of industrial boilers, insulating fire bricks can be used as lining material in the combustion chamber and other areas of the boiler where insulation is required. The use of insulating fire bricks in industrial boilers offers several advantages. Firstly, their low thermal conductivity helps to reduce heat loss, improving the overall energy efficiency of the boiler. This can result in significant cost savings over time. Additionally, insulating fire bricks have a high resistance to thermal shock, meaning they can withstand rapid temperature changes without cracking or breaking. This is important in boiler applications where the temperature can fluctuate frequently. Furthermore, insulating fire bricks are lightweight and relatively easy to install, making them a convenient choice for construction projects. They can be easily shaped and cut to fit the specific requirements of the boiler, allowing for a precise and efficient installation process. Overall, the use of insulating fire bricks in the construction of industrial boilers is a suitable choice due to their excellent thermal insulation properties, resistance to thermal shock, and ease of installation.

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