GJM Series Refractory Insulating Bricks
- Ref Price:
-
- 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 Density，g/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 | --- |
- Q:Can insulating fire bricks be used in the construction of refractory coatings?
- Indeed, refractory coatings can utilize insulating fire bricks during their construction. The purpose of insulating fire bricks is to possess a low thermal conductivity, enabling them to effectively hinder the transfer of heat. Consequently, they prove to be an optimal choice for refractory coatings, which serve the purpose of shielding structures from elevated temperatures. Refractory coatings are applied onto surfaces that endure extreme heat, such as furnaces, kilns, and chimneys. These coatings furnish an insulating layer that aids in preserving heat, preventing harm to the underlying structure, and enhancing energy efficiency. In the construction of refractory coatings, insulating fire bricks can be employed as a foundational layer. They can be stacked and bonded together to form a sturdy and heat-resistant surface. This layer acts as a barrier that impedes the passage of heat to the underlying structure. Apart from their low thermal conductivity, insulating fire bricks possess other attributes that render them suitable for use in refractory coatings. They exhibit high temperature resistance, enabling them to withstand the intense heat generated in industrial applications. Furthermore, they boast a lightweight nature and are easy to handle, facilitating convenient installation and handling. To summarize, insulating fire bricks present themselves as a dependable choice when it comes to constructing refractory coatings. With their exceptional insulation properties and capacity to shield against high temperatures, they stand as a valuable component in the production of structures that can withstand extreme heat.
- Q:What materials are used to make insulating fire bricks?
- Various materials possessing high thermal insulation properties are used to manufacture insulating fire bricks. The primary material utilized in producing these bricks is kaolin clay, a type of clay renowned for its insulation characteristics. To enhance its insulating properties and increase its resistance to high temperatures, this clay is mixed with other additives such as alumina, silica, and zirconium. Furthermore, materials like sawdust, vermiculite, perlite, and calcium silicate are occasionally added to the mixture to further enhance the bricks' insulation capabilities. Collectively, these materials enable insulating fire bricks to exhibit low thermal conductivity, exceptional heat resistance, and excellent insulation qualities, rendering them suitable for a broad range of industrial and domestic applications.
- Q:Can insulating fire bricks be used for insulation in refractory lining repair?
- Indeed, insulation in refractory lining repair can be achieved by utilizing insulating fire bricks. Crafted from lightweight materials, these bricks boast exceptional thermal insulation properties, rendering them perfectly suitable for employment in high-temperature settings like furnaces, kilns, and other refractory lining structures. Their low thermal conductivity and impressive resistance to thermal shock enable them to effectively insulate and safeguard the refractory lining against heat, thereby averting heat loss and diminishing energy consumption. Additionally, the installation and replacement of insulating fire bricks are effortless, solidifying their position as a cost-efficient alternative for refractory lining repair.
- Q:What is the recommended curing method for insulating fire bricks?
- The recommended curing method for insulating fire bricks is to gradually heat them up to their operating temperature over a period of time. This can be done by starting with a low temperature and gradually increasing it over several hours or days, allowing the bricks to slowly expand and release any moisture or volatile substances. This process helps to prevent thermal shock and ensures the bricks are properly cured and ready for use.
- Q:Are insulating fire bricks resistant to flame spread?
- Insulating fire bricks exhibit exceptional resistance against flame propagation. Crafted with utmost precision, these bricks are tailored to endure extreme temperatures while effectively trapping and insulating heat. Constructed from refractory materials with minimal thermal conductivity, they possess remarkable capabilities in impeding heat transfer and thwarting the spread of flames. Widely employed in kilns, furnaces, and fireplaces, where maintaining and managing high temperatures is of paramount importance, these bricks' flame-resistant properties render them an unwavering and secure choice for such environments.
- Q:Are insulating fire bricks suitable for insulation in boilers for steam generation?
- Insulating fire bricks are a suitable choice for insulation in steam generation boilers. Specifically designed to possess exceptional thermal insulation properties, these bricks are perfect for high-temperature applications like boilers. With their low thermal conductivity, they effectively minimize heat transfer and prevent heat loss. This insulation capability aids in maintaining optimal temperatures within the boiler, thereby enhancing energy efficiency and reducing fuel consumption. Moreover, these bricks can withstand thermal shock, making them highly resistant to the extreme temperature fluctuations encountered during steam generation. Overall, incorporating insulating fire bricks into steam generation boilers can significantly improve the system's thermal efficiency and performance.
- Q:What is the recommended thickness for insulating fire bricks in various applications?
- The recommended thickness for insulating fire bricks varies depending on the specific application. However, in general, a thickness between 2.5 to 3 inches is commonly recommended for most applications to ensure adequate insulation and heat resistance.
- Q:Can insulating fire bricks be used for insulation in flues?
- Insulating fire bricks are created with the specific purpose of being used in high-temperature settings, such as furnaces, kilns, and various industrial environments. Their main function is to effectively insulate heat and prevent heat loss. However, it is important to note that they are not suitable for use in flues. Flues are exposed to extreme temperatures, corrosive gases, and the possibility of accumulation of soot and creosote. The conditions in flues are not compatible with insulating fire bricks, as they are not designed to withstand such harsh elements. Consequently, when exposed to the acidic and corrosive gases generated by combustion, these bricks may deteriorate or develop cracks over time. To ensure proper insulation in flues, it is advisable to opt for materials that are specifically manufactured for this purpose, such as refractory cement or ceramic fiber insulation. These materials are better equipped to withstand the challenging conditions encountered in flues and are more capable of providing effective insulation while maintaining the safety and durability of the flue system.
- Q:Can insulating fire bricks be used in chimneys and fireplaces?
- Chimneys and fireplaces can indeed utilize insulating fire bricks. These bricks are specifically crafted to endure high temperatures and offer exceptional insulation. They are constructed from lightweight materials like ceramic fibers or refractory materials, which aid in minimizing heat transfer. Thus, they are an optimal choice for lining chimneys and fireplaces since they retain heat within the firebox and prevent its escape through the chimney. Moreover, insulating fire bricks enhance the heating system's efficiency by reducing heat loss and elevating the overall heat output. However, it is crucial to emphasize that insulating fire bricks should only be employed in appropriate sections of the chimney or fireplace, such as the firebox. Conversely, the smoke chamber or flue necessitate different types of bricks capable of withstanding the corrosive effects of flue gases.
- Q:Can insulating fire bricks be used in the construction of refractory linings?
- Yes, insulating fire bricks can be used in the construction of refractory linings. Insulating fire bricks have excellent thermal insulation properties, low thermal conductivity, and high refractoriness, making them suitable for applications where heat retention and energy efficiency are important. They are commonly used in industries such as steel, ceramics, glass, and cement to line kilns, furnaces, and other high-temperature equipment.
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GJM Series Refractory Insulating Bricks
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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