• 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:Are insulating fire bricks suitable for insulation in chemical reactors?
Insulating fire bricks are often used for insulation in chemical reactors due to their excellent thermal properties and resistance to high temperatures. These bricks are made from lightweight refractory materials such as alumina, silica, and other minerals, which provide insulation against heat transfer. They have low thermal conductivity and high heat capacity, allowing them to effectively reduce heat loss and maintain stable temperatures inside the reactor. Chemical reactors often operate at high temperatures and may contain corrosive or reactive substances. Insulating fire bricks are able to withstand these harsh conditions and protect the reactor from external heat sources. They are chemically inert and resistant to corrosion, making them suitable for use with various chemicals and reactants. Additionally, insulating fire bricks have a low thermal expansion coefficient, which means they can withstand thermal cycling without cracking or deforming. This is crucial in chemical reactors where temperature changes are frequent and can cause damage to the equipment. Overall, insulating fire bricks are a popular choice for insulation in chemical reactors due to their thermal insulation properties, chemical resistance, and ability to withstand high temperatures and thermal cycling. Their use helps to improve the efficiency and safety of chemical processes by maintaining optimum operating conditions inside the reactor.
Q:What is the typical thermal conductivity of an insulating fire brick?
Insulating fire bricks possess a typical thermal conductivity ranging between 0.2 and 0.6 W/m·K, which attributes to their effectiveness as insulators by reducing heat transfer through the bricks. These bricks are specifically engineered to offer exceptional thermal insulation, enabling them to retain heat and endure high temperatures while minimizing energy loss.
Q:What is the lifespan of insulating fire bricks?
The lifespan of insulating fire bricks can vary depending on various factors. Typically, these bricks are designed to be long-lasting and can endure for numerous years or even decades if correctly installed and maintained. The longevity of insulating fire bricks is significantly influenced by their quality. Superior materials and manufacturing processes used in the production of high-quality bricks tend to result in a longer lifespan compared to lower-quality bricks. It is important to select bricks from reputable manufacturers who abide by stringent quality control standards. The application and conditions under which insulating fire bricks are used also play a crucial role. If exposed to extreme temperatures, such as in furnaces or kilns, the bricks may undergo thermal shock and degradation over time. Similarly, exposure to corrosive chemicals or abrasive materials can also impact the bricks' lifespan. To maximize the lifespan of insulating fire bricks, proper installation and maintenance are essential. They should be installed in accordance with the manufacturer's guidelines, ensuring proper alignment and support. Regular inspections should be carried out to detect any signs of damage or wear, with prompt repairs or replacements made as necessary. In conclusion, while the exact lifespan of insulating fire bricks cannot be determined with absolute certainty, it is reasonable to expect them to endure for several years to several decades when used in suitable applications and maintained appropriately.
Q:Can insulating fire bricks be used in paper mills?
Yes, insulating fire bricks can be used in paper mills. Insulating fire bricks are commonly used in industrial applications, including paper mills, to provide thermal insulation and protect equipment from high temperatures. They help in maintaining optimal temperature levels and enhance energy efficiency in the paper production process.
Q:Can insulating fire bricks be used for fireplace lining?
Yes, insulating fire bricks can be used for fireplace lining. Insulating fire bricks are specifically designed to withstand high temperatures and provide excellent insulation. They have a low thermal conductivity, which means they can effectively retain heat and prevent excessive heat loss from the fireplace. This makes them an ideal choice for lining fireplaces as they help to increase the efficiency and effectiveness of the heating system. Additionally, insulating fire bricks are also resistant to thermal shock and can withstand rapid temperature changes, which is important in a fireplace where the temperature can fluctuate significantly. Overall, using insulating fire bricks for fireplace lining can improve the performance and energy efficiency of the fireplace while ensuring safety and durability.
Q:Can insulating fire bricks be used in crucibles?
No, insulating fire bricks cannot be used in crucibles. Insulating fire bricks are designed to have low thermal conductivity and are commonly used for insulation purposes in applications such as kilns, furnaces, and fireplaces. However, crucibles require materials with high thermal conductivity and resistance to high temperatures to withstand the intense heat and chemical reactions that occur during various processes such as melting or refining metals, conducting high-temperature experiments, or performing chemical reactions. Therefore, crucibles are typically made from materials such as graphite, clay, or ceramic, which can withstand the extreme conditions and provide efficient heat transfer.
Q:Can insulating fire bricks be cut to custom sizes?
Yes, insulating fire bricks can be cut to custom sizes. Insulating fire bricks are typically made from lightweight materials such as ceramic fibers or lightweight aggregates, which make them relatively easy to cut. They can be cut using various tools such as a saw, knife, or specialized cutting equipment. It is important to take proper safety precautions and use appropriate tools and techniques to ensure a clean and accurate cut. Additionally, it is advisable to consult the manufacturer's guidelines or seek professional advice to ensure that the cutting process does not compromise the integrity or thermal properties of the insulating fire bricks.
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 have low thermal conductivity?
Yes, insulating fire bricks have low thermal conductivity. These bricks are specifically designed to minimize heat loss and provide excellent insulation properties. The low thermal conductivity of insulating fire bricks is due to their composition, which typically includes lightweight materials such as clay, silica, and alumina. These materials have low thermal conductivity, meaning they are not efficient at transferring heat. As a result, insulating fire bricks are highly effective at reducing heat transfer and maintaining high temperatures within a structure. This makes them ideal for applications that require insulation against high temperatures, such as in kilns, furnaces, and fireplaces.
Q:Can insulating fire bricks be used as insulation for pizza ovens?
Yes, insulating fire bricks can be used as insulation for pizza ovens. Insulating fire bricks are designed to withstand high temperatures and provide excellent thermal insulation. These bricks have low thermal conductivity, meaning they can effectively retain heat and prevent it from escaping the oven. This helps in maintaining a consistent and high temperature inside the pizza oven, allowing for even cooking and crisp crusts. Insulating fire bricks are also lightweight and easy to install, making them a popular choice for insulating pizza ovens.

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