Refractory Mullite Insulating Refractory Brick JM 40
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 20 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 of Insulating 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.
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:What is the water absorption of insulating fire bricks?
- The water absorption of insulating fire bricks is typically low, ranging from 5% to 10%.
- Q:Are insulating fire bricks resistant to moisture penetration?
- Insulating fire bricks exhibit resistance to moisture penetration, as they are designed with low porosity, resulting in a minimal water absorption rate. This attribute grants them formidable protection against moisture infiltration. These bricks find frequent application in environments characterized by elevated temperatures and harsh conditions, including kilns, furnaces, and fireplaces. Their durability and effectiveness in such settings are guaranteed by their ability to ward off moisture penetration.
- Q:Do insulating fire bricks have a high fireproof rating?
- Indeed, insulating fire bricks possess a remarkable fireproof rating. These bricks have been specifically engineered to endure exceedingly high temperatures and offer exceptional insulation against the transfer of heat. They are crafted using specialized refractory materials with limited thermal conductivity, thereby aiding in the retention of heat and preventing its escape from the system. Insulating fire bricks are capable of withstanding temperatures ranging from 2300°F to 3100°F (1260°C to 1700°C), rendering them ideal for utilization in furnaces, kilns, fireplaces, and other applications involving elevated temperatures. Their elevated fireproof rating guarantees their ability to effectively safeguard structures and equipment from the intense heat and flames, enabling secure and efficient operations across diverse industries.
- Q:Are insulating fire bricks suitable for insulation in steam boilers?
- Yes, insulating fire bricks are suitable for insulation in steam boilers. They are designed to withstand high temperatures and provide excellent thermal insulation, making them ideal for use in steam boilers to minimize heat loss and improve energy efficiency.
- Q:Can insulating fire bricks be used in contact with molten metal?
- Indeed, it is possible to utilize insulating fire bricks in direct contact with molten metal. Specifically engineered to endure extreme temperatures, these bricks are widely employed in industrial settings where they encounter molten metal. With their exceptional resistance to thermal shock, they are capable of withstanding the intense heat generated by molten metal. Furthermore, insulating fire bricks possess low thermal conductivity, thereby reducing heat loss and enhancing energy efficiency. However, it is crucial to ascertain that the specific variant of insulating fire brick employed is suitable for the specific type of molten metal and temperature range it will be exposed to. Different metals possess varying melting points, which may necessitate the use of more specialized refractory materials.
- Q:Are insulating fire bricks resistant to acids?
- Insulating fire bricks, also known as refractory bricks, are generally resistant to acids. These bricks are made from high temperature-resistant materials such as silica, alumina, and other refractory oxides, which provide excellent resistance to chemical attack. However, it is important to note that the level of acid resistance can vary depending on the specific composition and manufacturing process of the insulating fire bricks. It is recommended to consult the manufacturer or supplier for detailed information about the acid resistance of the specific type of insulating fire bricks being used.
- Q:Can insulating fire bricks be used in fireplace construction?
- Yes, insulating fire bricks can be used in fireplace construction. They are designed to withstand high temperatures and provide excellent insulation, making them a suitable choice for building fireplaces.
- Q:Do insulating fire bricks have good mechanical strength?
- Yes, insulating fire bricks have good mechanical strength. They are specifically designed to withstand high temperatures and provide excellent thermal insulation while maintaining their structural integrity.
- Q:Can the whole wall of the high-rise building be made of grey insulation bricks?
- If the frame structure, it may be so. What is the length of the whole wall? If it is longer, it is necessary to make a constructional column; if the hole is larger, the edge of the hole needs to be made into a border or a constructional column; if the entrance is small, the edge of the hole is about 300mm and needs solid bricks to build better. South wall thickness can be about 190mm, plus plastering design value of 200mm. Personal comments for reference!
- Q:Can insulating fire bricks be used for insulation in flues?
- Yes, insulating fire bricks can be used for insulation in flues. These bricks are designed to withstand high temperatures and provide excellent thermal insulation, making them suitable for lining and insulating flue systems. They help to prevent heat loss, improve energy efficiency, and enhance the overall performance of the flue.
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Refractory Mullite Insulating Refractory Brick JM 40
- 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
OKorder Financial Service
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