• Refractory Mullite Insulating Refractory Brick JM 42 System 1
  • Refractory Mullite Insulating Refractory Brick JM 42 System 2
  • Refractory Mullite Insulating Refractory Brick JM 42 System 3
  • Refractory Mullite Insulating Refractory Brick JM 42 System 4
Refractory Mullite Insulating Refractory Brick JM 42

Refractory Mullite Insulating Refractory Brick JM 42

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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.

 

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

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..

 

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 42

 

Q:Are insulating fire bricks resistant to chlorine gas?
Yes, insulating fire bricks are generally resistant to chlorine gas. Insulating fire bricks are made from refractory materials, which are designed to withstand high temperatures and resist chemical corrosion. Chlorine gas is a highly reactive substance and can cause corrosion or damage to many materials. However, insulating fire bricks have a high resistance to chemical attack, making them suitable for applications where they may come into contact with chlorine gas. It is important to note that the specific composition and quality of the insulating fire bricks can vary, so it is always recommended to consult the manufacturer or supplier for specific information regarding their resistance to chlorine gas.
Q:Can insulating fire bricks be used in ladle covers?
Yes, insulating fire bricks can be used in ladle covers. Insulating fire bricks are designed to withstand high temperatures and provide thermal insulation. They are commonly used in various industrial applications, including ladle covers, to retain heat and prevent heat loss.
Q:Can insulating fire bricks be used in the construction of glass bottle production furnaces?
Insulating fire bricks have the capability to be utilized in the construction of glass bottle production furnaces. These bricks are specifically designed to withstand high temperatures and offer exceptional thermal insulation. They are commonly employed in applications that necessitate heat retention and energy efficiency, like furnaces. By incorporating insulating fire bricks into the construction of glass bottle production furnaces, the generated heat during the glass-making process can be effectively contained within the furnace, resulting in diminished heat loss and enhanced energy efficiency. Consequently, this can lead to cost savings and improved production performance. Furthermore, insulating fire bricks can aid in safeguarding the structural integrity of the furnace by minimizing thermal stress and preventing heat transfer to the surrounding environment. In summary, the utilization of insulating fire bricks in glass bottle production furnaces can contribute to a more efficient and long-lasting furnace operation.
Q:Can insulating fire bricks be cut or shaped as needed?
Yes, insulating fire bricks can be cut or shaped as needed. Insulating fire bricks are made from lightweight materials such as ceramic fibers and refractory materials, which make them easier to cut and shape compared to traditional dense fire bricks. They can be easily cut using a saw or a specialized cutting tool, and can be shaped by grinding, sanding, or chiseling. This flexibility in cutting and shaping allows for custom fitting of the insulating fire bricks to specific applications or structures. However, it is important to note that proper safety precautions should be taken while cutting or shaping the bricks, such as wearing protective goggles, gloves, and a dust mask to prevent inhalation of any hazardous particles.
Q:Are insulating fire bricks resistant to water absorption?
Yes, insulating fire bricks are highly resistant to water absorption.
Q:Are insulating fire bricks suitable for use in the construction of blast furnaces?
Yes, insulating fire bricks are suitable for use in the construction of blast furnaces. These bricks have excellent insulating properties, high refractoriness, and thermal shock resistance, making them capable of withstanding the extreme temperatures and rapid temperature changes commonly encountered in blast furnaces. Additionally, their lightweight nature allows for easier installation and reduces the overall weight of the furnace structure.
Q:Are insulating fire bricks resistant to thermal bridging?
Insulating fire bricks possess resistance against thermal bridging. Thermal bridging arises when a material allows heat to flow directly, thereby bypassing the insulation. Insulating fire bricks counteract this issue by minimizing thermal conductivity, which renders them ineffective at conducting heat. This characteristic aids in maintaining a uniform temperature on either side of the brick, thereby preventing thermal bridging and enhancing the overall insulation performance.
Q:Can insulating fire bricks be used as a structural component in a building?
Using insulating fire bricks as a structural component in a building is not recommended. These bricks are primarily designed to provide thermal insulation and are not meant to bear significant structural loads. Their low density and strength make them unsuitable for structural purposes, unlike traditional bricks or concrete blocks commonly used. Insulating fire bricks are better suited for applications that require thermal insulation, such as lining furnaces, kilns, or chimneys. When constructing structural components in buildings, it is crucial to use materials that have been specifically designed and tested to meet the necessary load-bearing capacities and safety standards.
Q:There are several construction techniques for exterior wall insulation
Exterior wall internal insulation technologyThe interior heat preservation of the wall is to place the heat insulation material on the inside of the outer wall.Advantage:1) waterproof, weather resistance and other technical indicators of finishes and insulation material requirements are not very high, gypsum board, gypsum plaster mortar can meet the use requirement, convenient;2) the internal insulation material is separated by the floor slab and is only constructed within a high storey without scaffolding;3) in the hot summer and cold winter and hot summer and warm winter zone, the inner heat preservation can meet the requirement;4) for the energy transformation of existing buildings, especially at a time when the housing sold to individuals, the whole building (source: China insulation network) or the entire district unified reform is difficult, only by the possibility of a large number of internal insulation. Therefore, in recent years, the exterior wall insulation has also been widely used.Shortcoming:1) because of beam, slab, structural column will cause thermal bridges, more heat loss;2) due to the material, structure, construction and other reasons, the cracking of the facing layer;3) it is not convenient for users to decorate two times and hang ornaments;4) occupy indoor use space;5) the energy saving of the existing buildings is very disturbing to the daily life of the residents.6) wall under outdoor climate, the temperature difference between day and night and the large temperature difference between summer and winter, easy to cause the wall cracking.
Q:Can insulating fire bricks be used in chimney lining?
Yes, insulating fire bricks can be used in chimney lining. Insulating fire bricks are designed to withstand high temperatures and provide excellent insulation, making them suitable for lining chimneys. They help to retain heat within the chimney, preventing it from escaping through the walls and improving the efficiency of the fireplace or stove. Additionally, these bricks are lightweight and easy to install, making them a popular choice for chimney lining projects. However, it is important to ensure that the specific type of insulating fire brick being used is suitable for chimney applications and complies with local building codes and regulations.

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