• Mullite Light -Weight Brick System 1
Mullite Light -Weight Brick

Mullite Light -Weight Brick

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The raw material is crude highquality highalumin low ferrous content material. The unique polylight spheres producing technique is adopted. The main structure of this high-quality heat insulation refractory brick is mullite crystal phase. The characteristics of this product are:

High compression strength

Good high-temperature performance

Excellent thermal shock stability

Low thermal conductivity

Outstanding penetration resistance ability

Erosion resistance

Application:

It may be widely used as the lining and the heat insulation layer of industrial  kilns in the fields of metallurgy, petrochemistry, machinery, power, ceramics, etc... It is an ideal product of long service life, energy-saving and effects-enhancing product.

Brand

Item

JM-23

JM-26

JM-28

JM-30

Al2O3(%)min

37

50

60

68

Fe2O3(%)max

1.0

1.0

0.7

0.5

SiO2(%)max

45

43

36

29

Safty Application Temp.(°C)max

1260

1430

1540

1650

Bulk Density(g/cm3)

0.5

0.8

0.95

1.05

Bending strength(Mpa)min

0.7

1.1

1.6

2.0

Crush strength(Mpa)min

1.0

2.0

2.3

2.7

RLC(%)max

1230°C×24h

0.3

1400°C×24h

0.4

1510°C×24h

0.5

1600°C×24h

0.6

Reversible thermal expansion at1090°C(%) max

0.5

0.6

0.8

0.8

Thermal conductivity (w/m.k)max

400°C

600°C

800°C

1000°C

0.15

0.17

0.19

0.24

0.28

0.31

0.33

0.35

0.33

0.36

0.39

0.42

0.41

0.43

0.45

0.48

Q:Can insulating fire bricks be used in the construction of hot air generators?
Indeed, the utilization of insulating fire bricks is applicable in the fabrication of hot air generators. Specifically engineered to endure extreme temperatures and deliver exceptional thermal insulation, insulating fire bricks are well-suited for incorporation into hot air generators. These generators necessitate insulation to uphold elevated temperatures and avert heat dissipation. By diminishing heat transfer to the surroundings, insulating fire bricks effectively enhance the efficiency and functionality of hot air generators. Furthermore, their lightweight nature, effortless installation, and long-lasting durability contribute to their widespread adoption in diverse industrial sectors, including the construction of hot air generators.
Q:Can insulating fire bricks be used in the construction of fireplaces?
Yes, insulating fire bricks can be used in the construction of fireplaces. Insulating fire bricks are designed to withstand high temperatures, making them an ideal choice for lining the interior of a fireplace. They have excellent thermal insulation properties, helping to retain heat within the fireplace and prevent excessive heat transfer to the surrounding structure. This not only improves the efficiency of the fireplace but also reduces the risk of damage to the surrounding walls. Insulating fire bricks are lightweight and easy to handle, making them convenient for construction purposes. Additionally, they are resistant to thermal shock, meaning they can withstand rapid temperature changes without cracking or breaking. Overall, insulating fire bricks are a reliable and effective choice for constructing fireplaces.
Q:Do insulating fire bricks have a high resistance to spalling?
Insulating fire bricks possess a remarkable ability to resist spalling. Spalling occurs when the surface of a material breaks or flakes off, and fire bricks are particularly susceptible to this phenomenon due to exposure to intense heat and thermal shock. However, insulating fire bricks are specially engineered to endure these extreme temperatures and thermal cycling, resulting in a significant resistance to spalling. These bricks are crafted from top-notch refractory materials like alumina or silica, renowned for their exceptional thermal shock resistance. Furthermore, they are manufactured with low thermal conductivity, effectively reducing heat transfer and minimizing the chances of spalling. In summary, insulating fire bricks are the perfect choice for applications demanding high spalling resistance, such as furnaces, kilns, and other environments with elevated temperatures.
Q:Can insulating fire bricks be used for insulation in sewage treatment plants?
Insulating fire bricks are capable of being utilized for insulation purposes in sewage treatment plants. Specifically designed to endure elevated temperatures and deliver exceptional insulation, these bricks prove to be suitable for deployment in environments characterized by heat and moisture, such as sewage treatment plants. With their low thermal conductivity, they aid in diminishing heat loss and enhancing energy efficiency throughout the treatment procedure. Furthermore, their resistance to chemicals and moisture renders them ideal for enduring the corrosive surroundings typically encountered in sewage treatment plants. Consequently, the usage of insulating fire bricks effectively ensures insulation in sewage treatment plants, thereby aiding in the preservation of optimal operating temperatures and the enhancement of overall efficiency.
Q:Can insulating fire bricks be used in hydrogen furnaces?
Yes, insulating fire bricks can be used in hydrogen furnaces. These bricks are specifically designed to withstand high temperatures and provide excellent thermal insulation, making them suitable for use in hydrogen furnaces where extreme heat is involved.
Q:Are there any safety precautions to consider when using insulating fire bricks?
Yes, there are safety precautions to consider when using insulating fire bricks. Firstly, it is important to wear appropriate personal protective equipment, such as gloves and safety goggles, to protect against potential injuries. Additionally, due to the high temperatures involved, it is crucial to handle the bricks with care to avoid burns or related accidents. Adequate ventilation should be ensured to prevent the buildup of harmful gases and fumes. Lastly, it is essential to follow the manufacturer's instructions and guidelines for proper installation and usage to minimize any potential risks.
Q:Are insulating fire bricks suitable for use in residential fireplaces?
Depending on the homeowner's specific requirements and preferences, insulating fire bricks can be a suitable option for residential fireplaces. These bricks are designed to have low thermal conductivity, which effectively retains heat and prevents its escape from the fireplace. Consequently, less heat is lost through the bricks, resulting in more efficient and effective heating of the room. Moreover, insulating fire bricks are lightweight and easy to handle, making them a convenient choice for homeowners who wish to install or replace bricks themselves. Additionally, they are durable and can withstand high temperatures, ensuring their longevity when exposed to the intense heat produced by the fire. Nevertheless, it is crucial to recognize that insulating fire bricks may not be ideal for everyone. Traditional fire bricks, being denser with higher thermal mass, can absorb and radiate heat for a longer duration. This attribute creates a more consistent and long-lasting heat output, which may be preferred by some homeowners. Ultimately, the decision to use insulating fire bricks in a residential fireplace should be based on the specific needs and preferences of the homeowner. Seeking guidance from a professional fireplace installer or a reputable supplier can help ensure that the chosen bricks are suitable for the intended use.
Q:What kind of mortar is used to bond insulating fire bricks together?
Refractory mortar, consisting of a blend of high-temperature resistant components like silica, alumina, and fire clay, is extensively employed to unite insulating fire bricks. Custom-made to endure extreme temperatures and offer exceptional adhesion, refractory mortar is the prevailing choice for firebrick applications. Notably, this mortar type exhibits remarkable resistance to thermal shock, rendering it perfect for bonding insulating fire bricks utilized in furnaces, kilns, and other settings with elevated temperatures.
Q:Can insulating fire bricks be used for insulation in industrial chimneys?
Yes, insulating fire bricks can be used for insulation in industrial chimneys. Insulating fire bricks are specifically designed to withstand high temperatures and provide excellent insulation properties. They are made from lightweight refractory materials that have low thermal conductivity, allowing them to effectively retain heat and prevent its transfer to the surroundings. This makes them ideal for use in industrial chimneys, where insulation is crucial to minimize heat loss and improve energy efficiency. Additionally, insulating fire bricks are also resistant to chemical corrosion, making them suitable for the harsh and corrosive environments typically found in industrial chimneys.
Q:Are insulating fire bricks resistant to vibration or seismic activity?
Insulating fire bricks are generally not resistant to vibration or seismic activity. These bricks are designed to provide insulation and are therefore lightweight and porous. While they may be able to withstand minor vibrations or low levels of seismic activity, they are not specifically engineered to handle significant levels of shaking or tremors. In applications where vibration or seismic activity is a concern, it is advisable to use specially designed bricks or materials that are specifically manufactured to withstand these types of forces.

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