Qingdao Leadsun Refractory Co., Ltd
| Porosity | 60% - 75% |
| Mullite Composition | 71.8% Al₂O₃, 28.2% SiO₂ |
| Packaging Details | PALLET |
| Delivery Time | 10-15 DAYS |
| Package | Pallet |
| Productname | Mullite Insulation Brick |
| Operatingtemperature | Up to 1750°C |
| Payment Terms | L/C,D/P,T/T |
| Maximum Use Temperature | 1350-1450℃ |
| Max Service Temperature | 1730°C |
| Alumina Content | 40% to 80% |
| Cold Crushing Strength | ≥40 Mpa |
| Size | Standard sizes or customized |
| Refractoriness | ≥ 1780°C |
| Supply Ability | 10000 TON/ MONTH |
| Type | Insulation Brick |
| Bulk Density | ≤0.8g/cm3 |
| Chemical Stability | Excellent |
| Mgo | 0.8-1.2 |
| Model Number | JM23 JM26 JM28 JM30 |
| Brand Name | LEADSUN |
| Place of Origin | CHINA |
| Certification | ISO CE |
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Product Specification
| Porosity | 60% - 75% | Mullite Composition | 71.8% Al₂O₃, 28.2% SiO₂ |
| Packaging Details | PALLET | Delivery Time | 10-15 DAYS |
| Package | Pallet | Productname | Mullite Insulation Brick |
| Operatingtemperature | Up to 1750°C | Payment Terms | L/C,D/P,T/T |
| Maximum Use Temperature | 1350-1450℃ | Max Service Temperature | 1730°C |
| Alumina Content | 40% to 80% | Cold Crushing Strength | ≥40 Mpa |
| Size | Standard sizes or customized | Refractoriness | ≥ 1780°C |
| Supply Ability | 10000 TON/ MONTH | Type | Insulation Brick |
| Bulk Density | ≤0.8g/cm3 | Chemical Stability | Excellent |
| Mgo | 0.8-1.2 | Model Number | JM23 JM26 JM28 JM30 |
| Brand Name | LEADSUN | Place of Origin | CHINA |
| Certification | ISO CE | ||
| High Light | Lightweight Mullite Insulation Brick ，High Temperature Resistant Insulation Brick ，Thermal Insulation Mullite Brick | ||
High Temperature Mullite Insulation Brick for Industrial Furnace and Kiln Thermal Insulation Lining
Mullite Insulation Brick is a high-performance lightweight refractory material manufactured from high-quality mullite raw materials, alumina and silica through advanced molding and high-temperature sintering processes. It combines excellent thermal insulation properties with high temperature resistance, low thermal conductivity and good structural stability, making it an ideal choice for energy-saving furnace and kiln insulation applications.
Compared with traditional refractory bricks, mullite insulation bricks have lower bulk density, lower heat storage capacity and better insulation performance. They can effectively reduce heat loss, improve thermal efficiency and help reduce fuel consumption in high-temperature industrial equipment.
Due to its excellent resistance to thermal shock, creep and chemical corrosion, Mullite Insulation Brick is widely used as insulation lining, hot face lining or backup lining material in various industrial furnaces operating under high-temperature conditions.
Mullite Insulation Bricks are widely used in:
| Item | JM23 | JM26 | JM28 | JM30 | JM32 |
|---|---|---|---|---|---|
| Al2O3 (%) | ≥37 | ≥54 | ≥64 | ≥72 | ≥77 |
| Fe2O3 (%) | ≤1.0 | ≤0.9 | ≤0.8 | ≤0.7 | ≤0.5 |
| Classification Temperature (ºC) | 1260 | 1400 | 1510 | 1620 | 1730 |
| Bulk Density (g/cm³) | 0.55–1.0 | 0.8–1.0 | 0.85–1.0 | ≥1.0 | ≥1.25 |
| Cold Crushing Strength (MPa) | ≥1.2 | ≥1.6 | ≥2.1 | ≥2.5 | ≥3.5 |
| Modulus of Rupture (MPa) | ≥0.9 | ≥1.4 | ≥1.6 | ≥2.1 | ≥2.1 |
| Thermal Expansion 1000ºC (%) | 0.5 | 0.7 | 0.8 | 0.9 | 1.1 |
| Reheating Linear Change (%) CT-30 ºC × 8h | 1230ºC -0.5 | 1400ºC -0.5 | 1510ºC -0.5 | 1620ºC -0.9 | 1730ºC -0.9 |
| Thermal Conductivity (W/m·K) at 400ºC | 0.14 | 0.27 | 0.32 | 0.41 | 0.49 |
| Thermal Conductivity (W/m·K) at 600ºC | 0.16 | 0.29 | 0.34 | 0.43 | 0.50 |
| Thermal Conductivity (W/m·K) at 800ºC | 0.18 | 0.31 | 0.36 | 0.44 | 0.51 |
| Thermal Conductivity (W/m·K) at 1000ºC | 0.20 | 0.33 | 0.38 | 0.45 | 0.53 |
Values shown are typical reference data. Customized grades and dimensions are available upon request.
Company Details
Business Type:
Distributor/Wholesaler,Exporter,Trading Company,Seller
Year Established:
2014
Total Annual:
3000000-5000000
Employee Number:
5~20
Ecer Certification：
Verified Supplier
Our products cover heavy & light shaped and unshaped refractories, and are widely used in power, steel & iron, non-ferrous, petrochemicals, building materials and other industries, and are exported to more than 30 countries and regions in Europe, America, Africa, Oceania, Southeast Asia... Our products cover heavy & light shaped and unshaped refractories, and are widely used in power, steel & iron, non-ferrous, petrochemicals, building materials and other industries, and are exported to more than 30 countries and regions in Europe, America, Africa, Oceania, Southeast Asia...
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