Mullite Insulation Brick Description
Mullite Insulation Brick is a type of refractory brick made primarily from mullite, a mineral composed of aluminum oxide (Al₂O₃) and silicon dioxide (SiO₂) in the formula 3Al₂O₃·2SiO₂. These bricks are characterized by their excellent high-temperature stability, low thermal conductivity, and good thermal shock resistance, making them ideal for use in high-temperature applications where both insulation and durability are required.
Mullite Insulation Brick Specifications
|
Items
|
KY-JM23
|
KY-JM26
|
KY-JM28-1
|
KY-JM28-2
|
KY-JM30
|
|
Service temperature ℃
|
1260
|
1430
|
1540
|
1540
|
1650
|
|
Bulk density g/cm3 ≤
|
0.5
|
0.8
|
0.9
|
0.95
|
1.05
|
|
Mpa ≥ MOR
|
0.7
|
1.1
|
1.5
|
1.6
|
2.0
|
|
Mpa ≥ CCS
|
1.0
|
2.0
|
2.2
|
2.3
|
2.7
|
|
PLC
|
%
|
0.3
|
0.4
|
0.5
|
0.5
|
-
|
|
℃×8h
|
1230
|
1400
|
1510
|
1510
|
-
|
|
Reversible coefficient of
thermal expansion
1090℃ % ≤
|
0.6
|
0.7
|
0.8
|
0.8
|
0.9
|
|
Thermal Conductivity
w/m·k ≤
|
400℃
|
0.15
|
0.28
|
0.32
|
0.33
|
-
|
|
600℃
|
0.17
|
0.31
|
0.34
|
0.36
|
-
|
|
800℃
|
0.19
|
0.33
|
0.36
|
0.39
|
-
|
|
1000℃
|
0.24
|
0.35
|
0.39
|
0.42
|
-
|
|
Al2O3% ≥
|
37
|
50
|
60
|
60
|
68
|
|
Fe2O3% ≤
|
1.0
|
1.0
|
0.8
|
0.8
|
0.7
|
|
SiO2 % ≤
|
45
|
43
|
36
|
36
|
29
|
Mullite Insulation Brick Applications
- Steel Industry: Used in blast furnaces, electric arc furnaces, ladles, and hot blast stoves.
- Cement Industry: Lining rotary kilns to protect against high temperatures and chemical reactions.
- Glass Industry: Protecting the walls and bottom of glass melting furnaces.
- Ceramics and Pottery: Used in kilns for firing ceramics and pottery.
- Power Plants: Lining boilers, incinerators, and other high-temperature equipment.
- Petrochemical Industry: Used in reformers, heaters, and reactors where high temperatures and corrosion resistance are required.
Mullite Insulation Brick Packaging
Our Mullite Insulation Brick is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
FAQs
Q1: What is Mullite Insulation Brick?
Mullite Insulation Brick is a type of refractory brick made primarily from mullite, a mineral composed of aluminum oxide (Al₂O₃) and silicon dioxide (SiO₂). These bricks are used for high-temperature applications due to their excellent thermal stability, low thermal conductivity, and good resistance to thermal shock.
Q2: What sizes and shapes are available for Mullite Insulation Bricks?
Mullite insulation bricks come in various standard sizes (e.g., 230x114x65 mm) and shapes (rectangular, arch, wedge, etc.). Custom sizes and shapes can also be manufactured upon request.
Q3: How does Mullite Insulation Brick compare to other refractory bricks?
Mullite insulation bricks typically have lower thermal conductivity and better thermal shock resistance than many other refractory bricks, making them ideal for applications where insulation and high-temperature performance are critical.
