• Refractory Mullite Insulating Fire Brick GJM30 System 1
  • Refractory Mullite Insulating Fire Brick GJM30 System 2
  • Refractory Mullite Insulating Fire Brick GJM30 System 3
  • Refractory Mullite Insulating Fire Brick GJM30 System 4
  • Refractory Mullite Insulating Fire Brick GJM30 System 5
Refractory Mullite Insulating Fire Brick GJM30

Refractory Mullite Insulating Fire Brick GJM30

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
20 m.t.
Supply Capability:
100000 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
CMAX insulating firebricks can be used as a hot face lining directly exposed to the heat or as a backup insulation layer in iron and steel mills, non-ferrous foundries, petrochemical, ceramic, glass.

 

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

---

 

Refractory Mullite Insulating Fire Brick GJM30

Q:Can insulating fire bricks be used for insulation in heat recovery systems?
Yes, insulating fire bricks can be used for insulation in heat recovery systems. Insulating fire bricks are specifically designed to withstand high temperatures and provide effective thermal insulation. They have low thermal conductivity, which means they can minimize heat loss and maximize heat recovery in a system. These bricks are often used in various industrial applications such as kilns, furnaces, and ovens, where temperature control and energy efficiency are important. Therefore, they can be a suitable choice for insulating heat recovery systems, helping to optimize the recovery and utilization of waste heat.
Q:Can insulating fire bricks be used in thermal oxidizers?
Yes, insulating fire bricks can be used in thermal oxidizers. Insulating fire bricks are designed to have low thermal conductivity, meaning they can effectively reduce heat transfer and conserve energy in high-temperature applications. Thermal oxidizers are devices used to treat industrial exhaust gases by oxidizing pollutants at high temperatures. By using insulating fire bricks in the construction of thermal oxidizers, heat can be contained within the system, ensuring efficient combustion and minimizing heat loss to the surroundings. This not only improves the overall thermal efficiency of the thermal oxidizer but also helps to reduce energy consumption and operating costs. Additionally, insulating fire bricks are highly resistant to thermal shock and have excellent insulating properties, making them suitable for the harsh and demanding conditions typically found in thermal oxidizers.
Q:Are insulating fire bricks suitable for insulation in petrochemical plants?
Yes, insulating fire bricks are suitable for insulation in petrochemical plants. These bricks are made from lightweight refractory materials and have excellent thermal insulation properties. They can withstand high temperatures and provide insulation against heat transfer, making them ideal for use in petrochemical plants where insulation is crucial for safety and energy efficiency.
Q:How do insulating fire bricks affect the overall fire resistance of a structure?
Insulating fire bricks enhance the fire resistance of a structure by providing a layer of thermal insulation. They have low thermal conductivity and high heat resistance, which helps to prevent the spread of heat and fire through walls or barriers. This added insulation slows down the transfer of excessive heat, thus increasing the overall fire resistance and protecting the structural integrity of the building.
Q:Do insulating fire bricks have a high insulation efficiency?
Yes, insulating fire bricks have a high insulation efficiency. Due to their low thermal conductivity and high heat resistance, they effectively prevent the transfer of heat, thereby providing excellent insulation.
Q:Can insulating fire bricks be used in the construction of flue gas ducts?
Yes, insulating fire bricks can be used in the construction of flue gas ducts. Insulating fire bricks are specifically designed to withstand high temperatures and provide excellent thermal insulation. This makes them a suitable choice for lining flue gas ducts, as they can help to reduce heat loss and improve energy efficiency. Additionally, insulating fire bricks are resistant to chemical corrosion and can withstand the corrosive effects of flue gases. However, it is important to ensure that the insulating fire bricks used are specifically designed for flue gas duct applications and meet the necessary safety and regulatory requirements. Consulting with a professional engineer or specialist in the field is recommended to ensure the correct selection and installation of insulating fire bricks in flue gas ducts.
Q:Can insulating fire bricks be used in the construction of thermal insulation roofs?
Yes, insulating fire bricks can be used in the construction of thermal insulation roofs. Insulating fire bricks are specially designed to have high thermal insulation properties, making them an ideal choice for applications that require heat retention and energy efficiency. These bricks are made from lightweight materials such as clay, which have low thermal conductivity and high resistance to heat transfer. This allows them to effectively reduce heat loss or gain, making them suitable for use in thermal insulation roofs. Additionally, insulating fire bricks are durable and can withstand high temperatures, making them a reliable choice for long-term use in roofing applications.
Q:Can insulating fire bricks be used in the construction of BBQ pits?
Yes, insulating fire bricks can be used in the construction of BBQ pits. These bricks are designed to withstand high temperatures and provide excellent insulation, making them ideal for creating a heat-resistant structure. They help to retain and distribute heat evenly, which is crucial for achieving optimal cooking conditions in a BBQ pit.
Q:Can insulating fire bricks be used in the construction of cremation chambers?
Yes, insulating fire bricks can be used in the construction of cremation chambers. These bricks are designed to withstand high temperatures and provide excellent insulation, which is crucial in maintaining the desired temperature and preventing heat loss during the cremation process.
Q:Do insulating fire bricks require any special installation techniques?
Yes, insulating fire bricks do require special installation techniques. These bricks are designed to provide excellent thermal insulation, which means they need to be installed properly to achieve optimal performance. Firstly, it is important to ensure that the installation surface is clean and free from any debris or moisture. This helps to create a strong and stable base for the bricks. Next, a suitable refractory mortar or adhesive should be used to secure the bricks in place. This mortar should be specifically designed for high-temperature applications and should be able to withstand the thermal expansion and contraction that occurs during heating and cooling cycles. During the installation process, it is crucial to pay attention to the joints between the bricks. These joints should be properly filled with mortar to prevent heat loss and maintain the insulating properties of the bricks. Additionally, insulating fire bricks should be carefully stacked and aligned to ensure a tight fit and minimize any gaps between the bricks. This helps to maximize the insulating effect and prevent heat leakage. Finally, it is recommended to consult the manufacturer's guidelines and follow their recommended installation techniques. Each type of insulating fire brick may have specific requirements that need to be followed for proper installation. Overall, insulating fire bricks do require special installation techniques to ensure their effectiveness and longevity. Following proper installation practices will help to enhance the thermal insulation properties of these bricks and optimize their performance.

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