Refractory Mulite Insulating Fire Brick GJM25
- 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 contact with molten metals?
- Yes, insulating fire bricks can be used in contact with molten metals. Insulating fire bricks are designed to withstand high temperatures and provide excellent insulation properties. They are commonly used in applications where there is a need to contain and distribute heat, such as in kilns, furnaces, and industrial ovens. When in contact with molten metals, insulating fire bricks can withstand the extreme heat and prevent heat transfer from the molten metal to the surrounding environment. This helps to maintain temperature stability and protect the structural integrity of the equipment. However, it is important to note that the specific type and composition of insulating fire bricks should be carefully chosen based on the temperature and the type of molten metal they will come into contact with. Different metals have different melting points and can have varying corrosive effects on different materials. Therefore, consulting with experts or manufacturers is recommended to ensure the right type of insulating fire bricks are selected for each specific application.
- Q:Do insulating fire bricks have a high insulating capacity?
- Insulating fire bricks possess a remarkable capacity for insulation. Crafted with utmost precision, these bricks exhibit exceptional thermal insulation characteristics, rendering them exceptionally proficient in obstructing heat transfer. Their composition entails lightweight materials like ceramic fibers, known for their minimal thermal conductivity. Consequently, insulating fire bricks adeptly capture and maintain heat, effectively thwarting its escape and ensuring adequate insulation of the surrounding space. Owing to their superior insulating capacity, these bricks find extensive utilization in domains that prioritize heat retention and energy efficacy, including furnaces, kilns, and fireplaces.
- Q:Can insulating fire bricks be used in pottery kilns?
- Yes, insulating fire bricks can be used in pottery kilns. Insulating fire bricks, also known as refractory bricks, are specifically designed to withstand high temperatures and provide insulation to retain heat in kilns. These bricks are made from materials such as alumina, silica, and other refractory materials, which have excellent thermal resistance properties. Using insulating fire bricks in pottery kilns helps to maintain a consistent temperature, reduce heat loss, and ensure efficient firing of clay and glazes. Additionally, these bricks help to prolong the lifespan of the kiln by protecting the interior walls from extreme temperatures. Therefore, insulating fire bricks are an ideal choice for pottery kilns and are widely used in the pottery industry.
- Q:Are insulating fire bricks resistant to nitrogen oxides?
- Yes, insulating fire bricks are resistant to nitrogen oxides.
- Q:Are insulating fire bricks safe to use in contact with food or beverages?
- Using insulating fire bricks in direct contact with food or beverages is not recommended due to safety concerns. These bricks, typically composed of materials like silica and alumina, are primarily used for their ability to withstand high temperatures and provide efficient insulation. While they are commonly utilized in industrial settings like kilns and furnaces, their suitability for food preparation or consumption is limited. When exposed to high temperatures, insulating fire bricks can release harmful substances, especially if they have not been properly cured or if they come into direct contact with food or beverages. These substances may include small amounts of heavy metals or other toxic compounds, which can pose health risks if consumed. To ensure the safety of food and beverages, it is advisable to opt for materials specifically designed for contact with food, such as food-grade stainless steel, glass, or ceramic. These materials are non-reactive and do not release any harmful substances when exposed to high temperatures. It is vital to prioritize the health and well-being of individuals by using appropriate materials for food and beverage preparation.
- Q:Do insulating fire bricks require any special fireproof coatings?
- No, insulating fire bricks do not require any special fireproof coatings. They are already designed to withstand high temperatures and provide insulation without the need for additional coatings.
- Q:Masonry method for boiler refractory brick
- Furnace wall gas tightness requirements, gray seam fullness requirements: red brick is not less than 85%; refractory brick not less than 90%. When the red brick is built, the method of squeezing is adopted, and the construction of the refractory brick is constructed by scraping.
- Q:Can insulating fire bricks be used as a base material for casting refractory shapes?
- Yes, insulating fire bricks can be used as a base material for casting refractory shapes. Insulating fire bricks are specifically designed to withstand high temperatures and provide insulation, making them suitable for use in refractory applications. These bricks have low thermal conductivity, which helps to minimize heat loss and maximize energy efficiency. Additionally, their lightweight nature makes them easy to handle and shape, making them an ideal base material for casting refractory shapes. However, it is important to consider the specific requirements and properties of the refractory shapes being cast to ensure that insulating fire bricks are the most suitable choice for the desired application.
- Q:Are insulating fire bricks resistant to thermal spalling?
- Yes, insulating fire bricks are resistant to thermal spalling.
- Q:Can insulating fire bricks be used in refractory lining for steelmaking?
- Yes, insulating fire bricks can be used in refractory lining for steelmaking. They are effective in providing insulation and thermal stability, helping to maintain high temperatures and protect the surrounding structures. Additionally, insulating fire bricks have low thermal conductivity and are lightweight, making them suitable for steelmaking processes that require heat retention and energy efficiency.
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Refractory Mulite Insulating Fire Brick GJM25
- 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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