Mullite Insulating Fire 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 resistant to carbon dioxide?: Insulating fire bricks, also known as refractory bricks, are engineered for withstanding high temperatures and displaying resistance to various chemicals and gases. Nonetheless, the level of resistance to carbon dioxide may differ based on the particular type and composition of the insulating fire brick. Carbon dioxide (CO2) is an inert gas usually found in the atmosphere and released when carbon-based fuels are burned. Typically, insulating fire bricks exhibit high resistance to carbon dioxide due to their elevated melting point and the presence of refractory materials like alumina and silica. Nevertheless, extended exposure to high concentrations of carbon dioxide, especially at increased temperatures, may lead to chemical reactions in some insulating fire bricks, resulting in degradation or diminished performance. Therefore, it is crucial to consider the specific application and environment in which the insulating fire bricks will be utilized. If the insulating fire bricks are part of a furnace or kiln that generates substantial amounts of carbon dioxide, it is advisable to select bricks explicitly designed for such conditions. These bricks might possess additional protective coatings or enhanced chemical resistance to ensure their durability and performance. To summarize, although insulating fire bricks generally possess good resistance to carbon dioxide, it is imperative to consider the specific type of brick and the conditions in which it will be employed to guarantee optimal performance and durability.

Q: Can insulating fire bricks be used in the construction of glass fusing kilns?: Indeed, glass fusing kilns can utilize insulating fire bricks. These bricks are specifically crafted to endure extreme temperatures and deliver exceptional insulation, rendering them fitting for kiln application. They aid in retaining heat and guaranteeing uniform distribution within the kiln, a critical component of the glass fusing procedure. Moreover, insulating fire bricks possess the advantages of being lightweight and long-lasting, making them an ideal choice for kiln construction. They effectively minimize heat loss, enhance energy efficiency, and uphold a steady temperature inside the kiln, all of which are pivotal factors for achieving successful glass fusing.

Q: Are insulating fire bricks resistant to warping?: Yes, insulating fire bricks are resistant to warping. They are specifically designed to have high thermal stability and low thermal conductivity, which helps to prevent warping even under high temperatures.

Q: Are insulating fire bricks easy to cut and shape?: Yes, insulating fire bricks are relatively easy to cut and shape. They are made of lightweight materials such as ceramic fibers, which can be easily cut using common tools like saws or knives. Additionally, their low-density composition allows for easier shaping and customization to fit specific requirements.

Q: How do insulating fire bricks affect the overall thermal efficiency of a building?: Insulating fire bricks can have a significant impact on the overall thermal efficiency of a building. These bricks are designed to have low thermal conductivity, meaning they are effective in reducing heat transfer between different areas of a building. By using insulating fire bricks in the construction of walls, ceilings, and floors, the thermal energy generated within the building can be better retained and distributed. This results in reduced heat loss during colder months and decreased heat gain during warmer months, ultimately leading to improved energy efficiency. Furthermore, the insulation provided by these fire bricks helps to create a more comfortable indoor environment by minimizing temperature fluctuations and reducing the need for excessive heating or cooling. This can result in lower energy consumption and cost savings for the building's occupants. In addition to their thermal insulation properties, insulating fire bricks also have other advantages. They are lightweight, which makes them easier to handle and install. They are also highly durable and resistant to thermal shock, making them ideal for applications where high temperatures are involved, such as fireplaces or kilns. Overall, incorporating insulating fire bricks into the construction of a building can greatly enhance its thermal efficiency, leading to improved energy savings, reduced environmental impact, and increased comfort for its occupants.

Q: Can insulating fire bricks be used in the construction of industrial furnaces?: Yes, insulating fire bricks can be used in the construction of industrial furnaces. These bricks are designed to withstand high temperatures and have excellent thermal insulation properties, making them ideal for lining the walls, roofs, and floors of industrial furnaces. They help to reduce heat loss, improve energy efficiency, and ensure the furnace operates at optimal temperatures.

Q: How do insulating fire bricks compare to other insulation materials like ceramic fiber?: Insulating fire bricks are generally denser and more durable compared to ceramic fiber insulation materials. While ceramic fiber offers excellent thermal insulation and is lightweight, insulating fire bricks provide better resistance to high temperatures and mechanical stress. Additionally, insulating fire bricks have lower thermal conductivity and higher compressive strength, making them suitable for applications that require long-term thermal insulation and structural support.

Q: What are the different sizes and shapes available for insulating fire bricks?: Insulating fire bricks are offered in a variety of sizes and shapes to accommodate different applications and requirements. The size options for insulating fire bricks typically span from standard measurements like 9" x 4.5" x 2.5" (commonly referred to as "9-inch bricks") to smaller dimensions such as 9" x 4.5" x 1". These standard sizes are extensively utilized in the construction of fireplaces, kilns, furnaces, and other applications involving high temperatures. In addition to the standard sizes, manufacturers also provide insulating fire bricks in custom sizes, allowing for greater design and construction flexibility. The custom sizes may vary depending on the manufacturer, but they generally adhere to the same width and length measurements as the standard bricks. Regarding their shape, insulating fire bricks are typically rectangular or square. The rectangular shape is the most prevalent and versatile, enabling easy installation and arrangement in various structures. Although square-shaped bricks are also available, they may be less commonly utilized. It is important to note that insulating fire bricks can be further classified based on their density or insulation value. These bricks are typically categorized into three groups: low-density, medium-density, and high-density. Each category possesses distinct insulating properties, with low-density bricks offering the highest insulation value. In summary, the extensive range of sizes and shapes offered for insulating fire bricks allows for customization and adaptability to different construction projects, ensuring optimal insulation and heat retention in applications involving high temperatures.

Q: Can insulating fire bricks be used in the construction of industrial furnaces?: Indeed, the utilization of insulating fire bricks is viable in the creation of industrial furnaces. These bricks are specifically engineered to endure elevated temperatures and thermal shocks, rendering them suitable for deployment in furnaces operating at exceedingly high levels of heat. Their thermal conductivity is notably low, thereby reducing heat dissipation and enhancing the energy efficiency of the furnace. Moreover, these fire bricks exhibit a lightweight composition and are effortlessly maneuverable, thereby proving to be convenient for construction endeavors. In summary, the superb insulation capabilities and heat-resistant attributes of insulating fire bricks position them as an optimal selection for the construction of industrial furnaces.

Q: What is the thermal insulation performance of aerated bricks?: Aerated brick light weight, heat preservation, heat insulation, sound insulation, easy processing, using a variety of hybrid material production, rich production of raw materials, especially the use of fly ash, and comprehensive utilization of industrial waste, environmental pollution, saving farmland, have a good social and economic benefits, is an alternative to the traditional solid clay brick ideal wall materials. Gongyi Machinery Factory is specialized in producing aerated brick equipment manufacturers.

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