• Cordierite-mullite Refractory Brick System 1
Cordierite-mullite Refractory Brick

Cordierite-mullite Refractory Brick

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Specifications

Cordierite-mullite brick
1. low thermal expansion coefficient,
2. excellent stability of thermal shocking

Alumina-Silica Refractory Series Products

Cordierite-mullite brick is of low thermal expansion coefficient, excellent stability of thermal shocking, it is used in assembly brick for hot blast stove.
Sintered mullite brick mineral component is mullite phase. It has the advantage of high temperature structural strength, strong resistance to chemical corrosion. It is used in the lining of high temperature kiln.
Silimanite bricks possesses the better refractoriness temperature under load and the good stability of thermal shocking. It is mainly used in the blast furnace, wind pipe of the blast heating cupola, the lime kiln, the discharging channel and cover board of the glass melting kiln.

Physical and chemical index :

Sillimanite Bricks
Cordierite brick
Corundum-Mullite Brick
Cordierite-Mullite Brick
M-68
M-72
GCS
JQS
AM-75
AM-80
JM
Al2O3 %
≥68
72
≥55
55±5
≥75
≥80
≥50
Fe2O3 %
≤1.5
≤1.5
≤1.5
≤1.5
≤2
MgO %
2.0
1.73~3
SiO2 %
≤45
Apparent Porosity %
≤21
≤19
≤17
≤25
≤17
≤17
≤23
Bulk Density g/cm3
≥2.45
≥2.50
≥2.45
≥2.30
≥2.55
≥2.60
≥2.30
Cold Crushing
Strength Mpa
≥50
≥60
≥55
≥40
≥70
≥70
≥70
Modulus of
Rupture Mpa
≥15
≥15
0.2Mpa Refractoriness
Under Load T
0.6
≥1580
≥1600
≥1550
(T
2)
≥1400
≥1680
≥1700
Reheat liner change 2h
1450°C
±0.2
Thermal
Shock Resistances
100°C water cycles
≥15
≥100
20-1000°C
Thermal Expansich
10
-6/°C
4.5-4.9

Q:Can insulating fire bricks be used in ceramic kilns?
Yes, insulating fire bricks can be used in ceramic kilns. These bricks are designed to have high insulating properties, making them ideal for maintaining heat within the kiln. They are lightweight and can withstand high temperatures, making them a suitable choice for ceramic kilns.
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:Are insulating fire bricks resistant to hydrofluoric acid?
Yes, insulating fire bricks are resistant to hydrofluoric acid.
Q:Are insulating fire bricks resistant to thermal bridging?
Yes, insulating fire bricks are resistant to thermal bridging. Thermal bridging occurs when there is a direct path for heat to flow through a material, bypassing the insulation. Insulating fire bricks are designed to minimize this by having low thermal conductivity, which means they are not effective at conducting heat. This helps to maintain a consistent temperature on both sides of the brick, preventing thermal bridging and improving the overall insulation performance.
Q:Can insulating fire bricks be used in brick kilns?
Yes, insulating fire bricks can be used in brick kilns. They are specifically designed to withstand high temperatures and provide excellent insulation, making them suitable for use in brick kilns where heat retention is crucial.
Q:What is the exterior wall insulation material made of graphite?
Graphite is polystyrene board, polyurethane graphite plate, from the point of view of building the acceptance specification in the use process, the core index of insulation material is the heat transfer coefficient and safety, by now a large number of glazed hollow bead slurry from the actual situation it seems difficult to ensure the quality of construction materials should be on site workers slurry mixing, finished product the quality gap made out of very large.
Q:Can insulating fire bricks be recycled or reused?
Yes, insulating fire bricks can be recycled or reused. Insulating fire bricks are made from various materials such as alumina, silica, and clay, which can be broken down and reused in the production of new bricks. Recycling these bricks involves crushing them into a fine powder and then mixing it with other raw materials to create new bricks. Reusing insulating fire bricks is also possible in certain applications. For example, if the bricks are still in good condition and have not been damaged, they can be removed from one structure and used in another. This reduces waste and saves resources. Overall, whether through recycling or reusing, insulating fire bricks can have a second life and contribute to a more sustainable and environmentally-friendly construction industry.
Q:Can insulating fire bricks be used in the construction of ladles?
Insulating fire bricks are indeed suitable for ladle construction. These bricks are crafted from lightweight materials that possess exceptional thermal insulation properties. As a result, they are well-suited for situations where heat retention or control is paramount, such as in the creation of ladles for metal or glass industries. By utilizing insulating fire bricks, heat loss can be minimized, energy efficiency can be enhanced, and the desired temperature within the ladle can be maintained. Furthermore, their lightweight composition facilitates easier handling and installation during ladle construction. Consequently, insulating fire bricks are a viable choice for ladle construction, as they furnish the necessary thermal insulation and durability requisite for these high-temperature applications.
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 have good thermal insulation properties and high temperature resistance, making them suitable for creating refractory shapes that can withstand extreme heat conditions.
Q:Insulation brick should pay attention to external walls?
Construction at room temperature, 24h after spraying water conservation, water spraying should not be too much, not flow. Unsuitable for winter construction. According to the national standard, seven consecutive days and nights, the average temperature is less than 5 degrees, may not carry on the external wall insulation, brick construction.

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