Insulating Fire Brick - Refractory Mullite Insulating Refractory Brick JM 25
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- Loading Port:
- Shanghai
- Payment Terms:
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- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 20 m.t./month
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Okorder series heat insulation brick
Okorder series thermal insulation brick is an effective, energy saving, low carbon, environmental protection advanced, according to the ASTM standard manufacturing products. Okorder series products have all kinds of materials in the field of metallurgy, industrial furnaces, aluminum, the best Li Ning petrochemical and insulation, electric power and glass ceramics. They can be used as part of an insulation or not to melt. Products have been widely used in the following furnace, achieved satisfactory results.
Application of heat preservation 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..
Glass industry: glass furnace regenerator, etc.
Carbon industry: carbon furnace, etc..
Aluminum electrolysis industry: aluminum reduction cell, etc.
Other industries: tunnel kiln, shuttle 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.
Chundu: High-speed Rail, low content of alkali metal impurities.
Accuracy: the size of the brick machining precision, cutting and grinding the special shape, speed up the brick.
Technical Data
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 | --- |
Insulating brick
- Q:Are insulating fire bricks resistant to freeze-thaw cycles?
- Yes, insulating fire bricks are generally resistant to freeze-thaw cycles. These bricks are designed to withstand extreme temperature changes, including freezing and thawing, without cracking or deteriorating.
- Q:How do insulating fire bricks help reduce heat loss through convection?
- Insulating fire bricks are specifically designed to minimize heat loss through convection. They achieve this by creating a barrier that prevents the movement of air and heat transfer. These bricks are made from lightweight refractory materials, which have low thermal conductivity. This means that they are not good conductors of heat and do not allow heat to easily pass through them. When these bricks are used in construction, they create a layer of insulation that effectively reduces heat transfer by convection. Convection is the process of heat transfer through the movement of air or fluid particles. The insulating fire bricks act as a barrier, preventing the free flow of air and interrupting the convective currents. The bricks are designed with small, interconnected air pockets or pores, which trap air inside them. These air pockets act as insulators and minimize the transfer of heat by convection. The trapped air forms a stagnant layer, reducing the movement of air and preventing the heat from escaping or entering the area. By reducing heat loss through convection, insulating fire bricks help to maintain a stable and comfortable temperature within a structure. They are commonly used in applications where heat insulation is essential, such as in industrial furnaces, kilns, and fireplaces. These bricks not only enhance energy efficiency by reducing heat loss but also contribute to fire safety by preventing the spread of heat to adjacent areas.
- Q:Are insulating fire bricks suitable for use in cement plants?
- Insulating fire bricks are indeed suitable for utilization in cement plants. Crafted from lightweight refractory materials, these bricks are specifically designed to withstand high temperatures and thermal shock. Their low thermal conductivity allows for effective insulation against heat transfer. In cement plants, where the production process generates elevated temperatures, insulating fire bricks can be applied in various ways. For instance, they can be utilized to line the kiln, which subjects raw materials to extreme temperatures in order to produce cement clinker. By possessing insulating properties, these bricks aid in minimizing heat loss and enhancing energy efficiency within the kiln. Moreover, insulating fire bricks can be employed to line the preheater tower and other areas within the cement plant that experience high temperatures. In doing so, these bricks provide both insulation and protection against the intense heat, consequently prolonging the lifespan of the equipment and reducing maintenance costs. Furthermore, the lightweight nature of insulating fire bricks renders them easier to handle and install in comparison to traditional refractory bricks. Consequently, this can save time and labor during the construction or repair of cement plant equipment. On the whole, insulating fire bricks are a suitable option for utilization in cement plants due to their resistance to high temperatures, low thermal conductivity, and ease of installation. Their implementation can contribute to enhanced energy efficiency, equipment durability, and cost savings within cement plant operations.
- Q:Can insulating fire bricks be used in the construction of melting furnaces?
- Yes, insulating fire bricks can be used in the construction of melting furnaces. Insulating fire bricks are designed to withstand high temperatures and have excellent thermal conductivity. They are specifically engineered to reduce heat loss and conserve energy, making them ideal for use in melting furnaces. In addition, insulating fire bricks are lightweight and easy to handle, making them convenient for construction purposes. They can effectively retain heat and maintain a stable temperature within the furnace, ensuring efficient melting and casting processes. Furthermore, insulating fire bricks are resistant to chemical corrosion and mechanical stress, making them durable and reliable for long-term use in melting furnaces. Overall, insulating fire bricks are a suitable choice for constructing melting furnaces due to their thermal properties, ease of use, and durability.
- Q:Can insulating fire bricks be used in high-temperature ducts?
- High-temperature ducts can indeed utilize insulating fire bricks. These bricks are specifically engineered to endure extreme temperatures, making them an optimal option for situations where heat retention and insulation are pivotal. Through their low thermal conductivity and strong resistance to thermal shock, insulating fire bricks are able to effectively trap heat within the ducts, averting any energy loss and ensuring efficient heat transfer. Moreover, their lightweight composition facilitates easy installation and handling, while their durability enables them to withstand the demanding conditions of high-temperature environments. Ultimately, insulating fire bricks prove themselves as a dependable and efficacious solution for the insulation of high-temperature ducts.
- Q:Do insulating fire bricks have a high electrical resistivity?
- Insulating fire bricks are generally characterized by their high electrical resistivity. This characteristic arises from their specific design, which aims to minimize thermal conductivity and maximize thermal resistance. Consequently, the insulating materials employed in these bricks, including alumina, silica, and other refractory materials, exhibit inherently high electrical resistivity. Moreover, the manufacturing procedures frequently incorporate the incorporation of insulating additives, thereby augmenting the electrical resistivity of the fire bricks. Consequently, insulating fire bricks prove to be highly effective in mitigating heat transfer and sustaining elevated temperatures across diverse industrial applications, such as kilns, furnaces, and thermal insulation systems.
- Q:Do insulating fire bricks expand and contract with temperature changes?
- Insulating fire bricks do indeed undergo expansion and contraction in response to temperature variations. Similar to all other materials, exposure to heat causes these bricks to expand, whereas cooling leads to their contraction. This expansion and contraction phenomenon arises from the material's thermal expansion coefficient, which dictates the degree of expansion or contraction in relation to temperature changes. It is crucial to acknowledge this characteristic when utilizing insulating fire bricks in situations that involve anticipated temperature fluctuations. Neglecting to account for the expansion and contraction may result in structural harm or the formation of cracks.
- Q:Can insulating fire bricks be used in the construction of refractory coatings?
- Yes, insulating fire bricks can be used in the construction of refractory coatings. Insulating fire bricks are designed to have low thermal conductivity, making them suitable for insulating applications. When used as a component in refractory coatings, they can help to enhance the insulation properties and provide thermal protection.
- Q:Can insulating fire bricks be cut or shaped to fit specific dimensions?
- Yes, insulating fire bricks can be cut or shaped to fit specific dimensions. They are designed to be easily cut or shaped using common tools such as saws, drills, or blades. This flexibility allows them to be customized to fit various applications and structures.
- Q:Can insulating fire bricks be used in thermal oxidizers?
- Yes, insulating fire bricks can be used in thermal oxidizers. Insulating fire bricks are designed to have low thermal conductivity, meaning they can effectively reduce heat transfer and conserve energy in high-temperature applications. Thermal oxidizers are devices used to treat industrial exhaust gases by oxidizing pollutants at high temperatures. By using insulating fire bricks in the construction of thermal oxidizers, heat can be contained within the system, ensuring efficient combustion and minimizing heat loss to the surroundings. This not only improves the overall thermal efficiency of the thermal oxidizer but also helps to reduce energy consumption and operating costs. Additionally, insulating fire bricks are highly resistant to thermal shock and have excellent insulating properties, making them suitable for the harsh and demanding conditions typically found in thermal oxidizers.
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Insulating Fire Brick - Refractory Mullite Insulating Refractory Brick JM 25
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 20 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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