Mullite Insulation Bricks are high-performance refractory materials made from high-purity mullite (3Al₂O₃·2SiO₂). mullite refractory bricks offer low thermal conductivity, excellent thermal shock resistance, and high-temperature stability, making them perfect for kiln applications requiring energy efficiency and durability. Their lightweight alumina-silicate insulation bricks design reduces heat storage, improving operational efficiency.
Product Parameters
|
Brand |
JM-23LD |
JM-23 |
JM-26 |
JM-28 |
JM-30 |
JM-32 |
|
|
Classification temperature (℃) |
1300 |
1300 |
1400 |
1500 |
1550 |
1600 |
|
|
Bulk Density (g/cm3) |
0.55 |
0.6 |
0.8 |
0.9 |
1.0 |
1.1 |
|
|
Cold Crushing Strength (MPa) |
1.0 |
1.2 |
1.8 |
2.5 |
3.3 |
3.5 |
|
|
Modulus of rupture (MPa) |
1.0 |
1.0 |
1.7 |
2.3 |
3.1 |
3.2 |
|
|
(CT℃X24h) Permanent Linear Change (%) |
-0.4 |
0.6 |
0.6 |
0.8 |
0.9 |
1.01 |
|
|
@ 1,100℃ Thermal Linear Expansion (%) |
0.50 |
0.50 |
0.52 |
0.52 |
0.53 |
0.7 |
|
|
Thermal conductivity (W/m.k) |
350℃ |
0.14 |
0.18 |
0.27 |
0.32 |
0.38 |
0.49 |
|
400℃ |
0.15 |
0.20 |
0.29 |
0.34 |
0.40 |
0.5 |
|
|
600℃ |
0.17 |
0.24 |
0.32 |
0.36 |
0.42 |
0.51 |
|
|
(%) chemical composition |
Al2O3 |
38 |
40 |
56 |
67 |
73 |
77 |
|
Fe2O3 |
0.8 (CaO12%) |
1.0 |
0.8 |
0.7 |
0.7 |
0.5 |
|
|
Main Applications |
Ceramic Roller Kiln Reheating Reheating Furnace Blast Furnace Petrochemical Furnace General Industrial Furnace etc. |
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Product Usage:
Mullite Insulation Bricks are widely used in industries requiring high-temperature insulation, including:
1. Rotary Kilns (Cement Kiln, Lime Kiln)
Our lightweight mullite bricks provide superior thermal insulation, reducing heat loss and energy consumption in rotary kilns. Their high refractoriness and low thermal conductivity ensure longer service life in cement and lime production.
2. Non-Ferrous Metal Furnaces
Ideal for aluminum, copper, and zinc processing, refractory mullite insulating firebricks resist thermal shock and chemical corrosion. lightweight design minimizes furnace load while maintaining structural stability at extreme temperatures.
3. Glass Melting Tanks & Electric Arc Furnaces
With excellent thermal stability and low heat storage,white high temperature insulation blocks enhance efficiency in glass melting and steelmaking. pre-fired mullite bricks reduce energy costs and extend furnace lifespan in high-heat industrial applications.
Product Advantages
- Excellent resistance in slag abrasion
- Lower impurity content
- Strong Alkali Corrosion Resistance
- Good thermal shock resistance performance & Good cold crush strength
- Good performance in high temp
- Refractoriness under load in high temp
Product technology:
The production of Mullite Insulation Bricks involves advanced technology and precision engineering:
Key steps include:
Raw Material Selection: High-purity mullite and alumina are chosen for their thermal and chemical properties.
Mixing and Molding: Raw materials are blended and molded into mullite refractory bricks using advanced pressing techniques.
High-Temperature Firing: mullite insulating bricks are fired at extreme temperatures to enhance density, strength, and thermal stability.
Quality Testing: Each lightweight mullite bricks undergoes rigorous testing for thermal conductivity, compressive strength, and thermal shock resistance.
Why Choose Us?
23+
years experience focus on refractories field
2 plants
with 3 sets of tunnel kilns for 120,000 tonnes capacity
3 QC
Labs Technology Centres
120+ employees
with ISO9001,TUV,SGS,Intertek certifications
100+
abroad customers in 50+ countries
20+
major industry furnace projects yearly
Packing
- To ensure safe delivery and handling, our Mullite Insulation Bricks are packaged with care:
- Wooden Crates: Securely packed to prevent damage during transit.
- Protective Wrapping: Each mullite refractory brick is wrapped to avoid scratches and breakage.
- Custom Packaging: Available upon request to meet specific shipping and storage needs.
FAQ
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