• Refractory Mulite Insulating Fire Brick GJM25 System 1
  • Refractory Mulite Insulating Fire Brick GJM25 System 2
  • Refractory Mulite Insulating Fire Brick GJM25 System 3
  • Refractory Mulite Insulating Fire Brick GJM25 System 4
Refractory Mulite Insulating Fire Brick GJM25

Refractory Mulite Insulating Fire Brick GJM25

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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 Mulite Insulating Fire Brick GJM25

 

Q:Are insulating fire bricks resistant to erosion?
Insulating fire bricks, in general, exhibit resistance to erosion. They consist of lightweight materials like alumina, silica, or a combination thereof. These materials possess remarkable resistance to erosion caused by elevated temperatures, chemical reactions, and physical wear. They are engineered to endure extreme heat and harsh circumstances, rendering them highly resistant to erosion. Furthermore, insulating fire bricks demonstrate low thermal conductivity, preventing easy absorption or transfer of heat and thereby affording additional protection against erosion. Nevertheless, it is worth noting that the level of erosion resistance may differ depending on the precise composition and quality of the insulating fire bricks.
Q:Can insulating fire bricks be used in glass furnaces?
Glass furnaces can indeed utilize insulating fire bricks. These bricks are specifically engineered with low thermal conductivity, rendering them ideal for high-temperature environments such as glass furnaces. The implementation of these bricks aids in the reduction of heat loss from the furnace, consequently enhancing energy efficiency and decreasing operational expenses. Moreover, they offer superior insulation and aid in maintaining consistent temperatures within the furnace, a vital factor in glass production. Furthermore, insulating fire bricks exhibit excellent resistance to thermal shock and can endure the extreme temperatures and rapid temperature fluctuations that are common in glass furnaces. Overall, integrating insulating fire bricks into glass furnaces can result in enhanced furnace performance, heightened productivity, and energy conservation.
Q:Are insulating fire bricks suitable for use in lime kilns?
Yes, insulating fire bricks are suitable for use in lime kilns. Lime kilns operate at high temperatures, typically between 900 to 1200 degrees Celsius. Insulating fire bricks are designed to withstand these extreme temperatures and provide excellent thermal insulation. They have low thermal conductivity, which helps to conserve heat and maintain high temperatures within the kiln. Additionally, insulating fire bricks are lightweight and have good resistance to thermal shock, making them ideal for the cyclic heating and cooling processes in lime kilns.
Q:Are insulating fire bricks suitable for use in steel manufacturing plants?
Insulating fire bricks are a suitable choice for steel manufacturing plants. Their excellent thermal properties, including high heat resistance and low thermal conductivity, make them ideal for high-temperature environments like steel manufacturing plants. These bricks can endure the extreme heat generated during steel production processes such as melting, casting, and forging. Furthermore, they assist in conserving energy by minimizing heat loss, thereby enhancing the overall efficiency of the plant. Additionally, they possess considerable mechanical strength and can withstand the physical stresses and strains associated with steel manufacturing operations. In summary, incorporating insulating fire bricks in steel manufacturing plants can enhance safety, boost productivity, and improve energy efficiency.
Q:Can insulating fire bricks be used in the construction of industrial chimneys?
Indeed, insulating fire bricks are capable of being utilized in the construction of industrial chimneys. These bricks are meticulously crafted with exceptional thermal insulation properties, rendering them perfectly suited for situations where precise temperature management is paramount. Given that industrial chimneys endure elevated temperatures and heat transmission, insulating fire bricks prove invaluable in mitigating heat dissipation or acquisition, thereby enhancing energy efficiency and minimizing the likelihood of structural harm. Furthermore, these bricks exhibit commendable resilience against thermal shock, enabling them to endure the rigorous conditions commonly encountered in industrial environments. Consequently, insulating fire bricks emerge as a fitting choice for constructing industrial chimneys.
Q:Do insulating fire bricks require any curing before use?
Indeed, curing is necessary for insulating fire bricks prior to their usage. Curing refers to the procedure of drying and toughening the bricks in order to guarantee their resilience against high temperatures, preventing any potential cracking or breaking. To accomplish this, the temperature needs to be elevated gradually over a specific duration, usually commencing with a gentle heat and slowly escalating it throughout several hours. Curing is pivotal as it aids in eliminating any moisture or volatile substances that may exist within the bricks, which, if left untreated, could lead to cracking or even explosion when exposed to elevated temperatures. To ensure the correct installation and longevity of the fire bricks, it is crucial to adhere to the manufacturer's guidelines regarding the curing process.
Q:Can insulating fire bricks be used in the construction of steam boilers?
Insulating fire bricks are ideal for use in steam boiler construction. They are crafted from lightweight refractory materials that offer outstanding thermal insulation capabilities. These bricks are specifically designed to endure high temperatures and provide insulation in industries where heat retention is crucial, such as steam boiler construction. The advantage of using insulating fire bricks lies in their low thermal conductivity, which allows for effective heat loss reduction and enhanced energy efficiency in steam boilers. When these bricks are incorporated into the construction of steam boilers, the overall heat transfer efficiency increases, resulting in reduced fuel consumption and lower operating costs. In addition, insulating fire bricks possess exceptional resistance to thermal shock. This means they can withstand sudden temperature fluctuations without cracking or breaking. This quality is particularly significant in steam boiler applications, where the temperature can vary greatly during operation. To summarize, insulating fire bricks are an excellent choice for steam boiler construction due to their remarkable thermal insulation properties, low thermal conductivity, and resistance to thermal shock. They contribute to improved energy efficiency, decreased fuel consumption, and the long life of the boiler.
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 residential fireplaces?
Yes, insulating fire bricks can be used in residential fireplaces. These bricks are designed to withstand high temperatures, making them an ideal choice for lining the interior of a fireplace. They help to retain heat and improve the overall efficiency of the fireplace. Additionally, insulating fire bricks are lightweight and easy to install, making them a practical option for residential use.
Q:What is the maximum temperature that insulating fire bricks can withstand?
Insulating fire bricks can withstand temperatures up to 3000°F (1650°C).

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