• Insulating Fire Brick - Refractory Mullite Insulating Refractory Brick JM 29 System 1
  • Insulating Fire Brick - Refractory Mullite Insulating Refractory Brick JM 29 System 2
  • Insulating Fire Brick - Refractory Mullite Insulating Refractory Brick JM 29 System 3
  • Insulating Fire Brick - Refractory Mullite Insulating Refractory Brick JM 29 System 4
Insulating Fire Brick - Refractory Mullite Insulating Refractory Brick JM 29

Insulating Fire Brick - Refractory Mullite Insulating Refractory Brick JM 29

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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 29 

Q: What materials are used to make insulating fire bricks?
Insulating fire bricks are made from a variety of materials that possess high thermal insulation properties. The most common material used in the production of these bricks is a type of clay known as kaolin clay. This clay is mixed with other additives such as alumina, silica, and zirconium to enhance its insulating properties and increase its resistance to high temperatures. In addition to clay, other materials like sawdust, vermiculite, perlite, and calcium silicate are also sometimes added to the mixture to further improve the insulation capabilities of the bricks. Overall, the combination of these materials allows insulating fire bricks to have low thermal conductivity, high heat resistance, and excellent insulation qualities, making them suitable for a wide range of industrial and domestic applications.
Q: Can insulating fire bricks be used in chimneys?
Yes, insulating fire bricks can be used in chimneys. These bricks are specifically designed to withstand high temperatures and provide excellent insulation, making them ideal for lining chimneys. They help to retain heat and prevent excessive heat transfer to the surrounding structure, enhancing the efficiency and safety of the chimney.
Q: Is it possible to paint or coat insulating fire bricks?
Indeed, it is feasible to apply paint or coat insulating fire bricks. Nevertheless, it is imperative to utilize a type of paint or coating that can endure elevated temperatures, given that insulating fire bricks are intended for usage in exceedingly hot surroundings. Ordinary paint or coatings may not be appropriate since they can combust or deteriorate under high temperatures. It is advisable to employ specialized high temperature paint or coatings that have been specifically formulated to withstand the intense heat of insulating fire bricks. Typically, these types of paint or coatings possess a resistance to high temperatures of several hundred degrees Celsius or greater. Moreover, it is crucial to adequately clean and prepare the surface of the bricks prior to applying any paint or coating to ensure optimal adhesion and durability.
Q: Can insulating fire bricks be used in industrial furnaces?
Yes, insulating fire bricks can be used in industrial furnaces. Insulating fire bricks are designed to withstand high temperatures and provide excellent insulation, making them suitable for use in various types of industrial furnaces.
Q: How do insulating fire bricks affect the overall fire resistance of a structure?
Insulating fire bricks play a crucial role in enhancing the overall fire resistance of a structure. These specialized bricks are designed to withstand high temperatures and act as an effective thermal barrier. By insulating the structure, they help to reduce heat transfer and prevent the spread of fire. Insulating fire bricks possess a low thermal conductivity, which means they do not easily conduct heat. This property enables them to absorb and store heat energy, preventing it from being transmitted to other parts of the structure. As a result, the fire is contained within a specific area, minimizing the risk of spreading to adjacent areas. Furthermore, insulating fire bricks have a high melting point, making them extremely resilient to heat. This allows them to effectively withstand prolonged exposure to intense temperatures without deforming or disintegrating. By preserving their structural integrity, these bricks ensure the stability and integrity of the overall structure during a fire event. In addition to their insulation and heat resistance properties, insulating fire bricks also act as a barrier to flames and combustion gases. Their dense composition obstructs the passage of flames and smoke, preventing them from permeating through the structure. This containment helps to limit the damage caused by fire and provides valuable time for occupants to evacuate safely. Overall, the incorporation of insulating fire bricks in the construction of a structure significantly enhances its fire resistance. They provide insulation, prevent the spread of fire, maintain structural stability, and act as a barrier against flames and smoke. By reducing heat transfer and containing the fire, insulating fire bricks play a vital role in safeguarding the structure and its occupants during a fire emergency.
Q: Are insulating fire bricks resistant to corrosion?
Yes, insulating fire bricks are resistant to corrosion.
Q: Can insulating fire bricks be used in oil refineries?
Yes, insulating fire bricks can be used in oil refineries. These bricks are designed to withstand high temperatures and provide excellent insulation, making them suitable for various industrial applications, including oil refineries. They help to reduce heat loss, improve energy efficiency, and protect the surrounding equipment and structures from extreme heat.
Q: Can insulating fire bricks be used in the construction of refractory coatings?
Indeed, refractory coatings can utilize insulating fire bricks during their construction. The purpose of insulating fire bricks is to possess a low thermal conductivity, enabling them to effectively hinder the transfer of heat. Consequently, they prove to be an optimal choice for refractory coatings, which serve the purpose of shielding structures from elevated temperatures. Refractory coatings are applied onto surfaces that endure extreme heat, such as furnaces, kilns, and chimneys. These coatings furnish an insulating layer that aids in preserving heat, preventing harm to the underlying structure, and enhancing energy efficiency. In the construction of refractory coatings, insulating fire bricks can be employed as a foundational layer. They can be stacked and bonded together to form a sturdy and heat-resistant surface. This layer acts as a barrier that impedes the passage of heat to the underlying structure. Apart from their low thermal conductivity, insulating fire bricks possess other attributes that render them suitable for use in refractory coatings. They exhibit high temperature resistance, enabling them to withstand the intense heat generated in industrial applications. Furthermore, they boast a lightweight nature and are easy to handle, facilitating convenient installation and handling. To summarize, insulating fire bricks present themselves as a dependable choice when it comes to constructing refractory coatings. With their exceptional insulation properties and capacity to shield against high temperatures, they stand as a valuable component in the production of structures that can withstand extreme heat.
Q: Can insulating fire bricks reduce heating or cooling costs?
Yes, insulating fire bricks can help reduce heating or cooling costs. These bricks are specially designed to have a high level of thermal insulation, meaning they have low thermal conductivity and can effectively prevent heat transfer between the inside and outside of a building. When used in the construction of fireplaces, ovens, or kilns, insulating fire bricks can help retain heat within these structures, allowing them to reach and maintain higher temperatures with less energy consumption. This can lead to significant savings on heating costs, as less energy is required to achieve the desired temperature. Similarly, when used in the construction of walls, insulating fire bricks can help minimize heat transfer between the interior and exterior of a building. This can result in reduced heating or cooling needs, as the insulation helps to maintain a more stable indoor temperature. As a result, less energy is required to heat or cool the building, leading to lower energy bills and reduced overall heating or cooling costs. It is important to note that the effectiveness of insulating fire bricks in reducing heating or cooling costs can vary depending on various factors, such as the overall insulation of the building, the size and design of the structure, and the climate in which it is located. However, in general, using insulating fire bricks can contribute to energy efficiency and cost savings in heating or cooling systems.
Q: Can insulating fire bricks be used for chimney lining?
Indeed, chimney lining can indeed benefit from the utilization of insulating fire bricks. These bricks are meticulously crafted to endure soaring temperatures and excel in heat retention. Their remarkable capacity for minimizing thermal conductivity effectively curbs heat dissipation, thereby enhancing the chimney's efficiency. Moreover, their impressive resistance to cracking and spalling renders them a resilient choice for lining. Nevertheless, it remains crucial to ascertain that the chosen insulating fire bricks align with the particular chimney type and adhere to the applicable local building codes and regulations.

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