Mullite Insulation Bricks - High-Temperature & Energy-Efficient (Full JM23-JM30 Range)
Sourcing Mullite Insulation Bricks compliant with GB/T 35845-2018? Hubei Zhongnai offers a full range of JM23, JM26, JM28, JM30 series Lightweight, High Alumina, and High Purity Mullite Insulating Fire Bricks (IFB). Featuring low thermal conductivity and high strength, they are the ideal energy-saving solution for all types of high-temperature furnaces.
Key words:
Mullite Insulation Brick, Mullite Insulating Fire Brick, Lightwei
Lightweight Mullite Brick, High Alumina Mullite Brick, IFB, JM23,
Classification:
Product Introduction
Professional Mullite Insulation Brick Solutions
Product Overview
Mullite Insulation Bricks (IFB), also referred to as Mullite Insulating Fire Bricks, represent advanced refractory technology featuring mullite (3Al₂O₃·2SiO₂) as the primary crystalline phase. These engineered materials exhibit exceptional thermal insulation properties through their optimized porous microstructure, delivering superior energy efficiency and thermal management solutions for high-temperature industrial applications.
Technical Selection Guidelines
Density Optimization Strategy: The selection of appropriate bulk density is critical for optimizing thermal and mechanical performance in specific applications.
Maximum Thermal Insulation: Lower bulk density grades (0.55-0.7 g/cm³) provide superior thermal insulation efficiency through increased porosity, resulting in minimal thermal conductivity. Ideal for energy conservation applications and thermal barrier systems.
Enhanced Structural Performance: Higher bulk density grades (0.8-1.1 g/cm³) offer superior mechanical strength and load-bearing capacity, suitable for structural applications requiring resistance to mechanical stress and gas flow erosion.
Professional Product Series GB/T 35845-2018 Certified
JM23 Series: Economic Lightweight Mullite Brick
Cost-effective solution for medium-temperature applications with optimal thermal efficiency (Service Temperature: ≤1300°C)
| Technical Property | 0.55 | 0.6 | 0.8 | 1.0 |
|---|---|---|---|---|
| Bulk Density (g/cm³) | 0.55 | 0.6 | 0.8 | 1.0 |
| Al₂O₃ Content (%) | ≥42 | ≥42 | ≥45 | ≥48 |
| Fe₂O₃ Content (%) | ≤1.2 | ≤1.2 | ≤1.0 | ≤1.0 |
| Max. Service Temperature (°C) | ≤1230 | ≤1260 | ≤1300 | ≤1300 |
| Cold Crushing Strength (MPa) | ≥1.2 | ≥1.5 | ≥2.3 | ≥3.0 |
| Thermal Conductivity (W/m·K) | 0.17 | 0.19 | 0.24 | 0.31 |
JM26 Series: High-Alumina Performance Mullite Brick
Enhanced alumina content for superior performance balance in demanding applications (Service Temperature: ≤1400°C)
| Technical Property | 0.7 | 0.8 | 0.9 | 1.0 |
|---|---|---|---|---|
| Bulk Density (g/cm³) | 0.7 | 0.8 | 0.9 | 1.0 |
| Al₂O₃ Content (%) | ≥54 | ≥55 | ≥56 | ≥56 |
| Fe₂O₃ Content (%) | ≤0.9 | ≤0.9 | ≤1.0 | ≤1.0 |
| Max. Service Temperature (°C) | ≤1400 | |||
| Cold Crushing Strength (MPa) | ≥2.0 | ≥2.3 | ≥2.8 | ≥3.2 |
| Thermal Conductivity (W/m·K) | 0.21 | 0.25 | 0.30 | 0.32 |
JM28 Series: High-Purity Mullite Brick
Premium purity formulation for critical high-temperature environments requiring atmospheric purity (Service Temperature: ≤1500°C)
| Technical Property | 0.8 | 0.9 | 1.0 |
|---|---|---|---|
| Bulk Density (g/cm³) | 0.8 | 0.9 | 1.0 |
| Al₂O₃ Content (%) | ≥64 | ≥65 | ≥66 |
| Fe₂O₃ Content (%) | ≤0.75 | ≤0.65 | ≤0.65 |
| Max. Service Temperature (°C) | ≤1500 | ||
| Cold Crushing Strength (MPa) | ≥2.3 | ≥2.8 | ≥3.3 |
| Thermal Conductivity (W/m·K) | 0.28 | 0.32 | 0.34 |
JM30 Series: Ultra-High Temperature Corundum-Mullite Brick
Advanced corundum-reinforced formulation for extreme temperature applications (Service Temperature: ≤1600°C)
| Technical Property | 1.0 | 1.1 |
|---|---|---|
| Bulk Density (g/cm³) | 1.0 | 1.1 |
| Al₂O₃ Content (%) | ≥72 | ≥72 |
| Fe₂O₃ Content (%) | ≤0.55 | ≤0.55 |
| Max. Service Temperature (°C) | ≤1600 | |
| Cold Crushing Strength (MPa) | ≥3.0 | ≥3.5 |
| Thermal Conductivity (W/m·K) | 0.40 | 0.43 |
Engineering Performance Advantages
Exceptional Refractoriness
Refractoriness up to 1790°C with superior RUL performance, ensuring reliable operation under extreme thermal conditions.
Ultra-Low Thermal Conductivity
Optimized porous microstructure delivers minimal heat transfer rates, maximizing energy efficiency and thermal insulation performance.
Dimensional Stability
Minimal permanent linear change and low high-temperature creep rates ensure long-term structural integrity and furnace stability.
Chemical Inertness
Superior resistance to acidic and alkaline atmospheric corrosion, extending operational service life in aggressive environments.
High-Purity Composition
Minimized impurity content reduces product contamination risks and enhances thermal shock resistance capabilities.
Precision Manufacturing
High dimensional accuracy ensures optimal installation fit. Custom configurations available to engineering specifications.
Industrial Application Sectors
Iron & Steel Manufacturing
- Hot Blast Stove Thermal Insulation
- Reheating & Annealing Furnace Linings
- Blast Furnace Thermal Barriers
- Secondary Metallurgy Vessel Insulation
Petrochemical Processing
- Ethylene Pyrolysis Furnaces
- Steam Reformer Thermal Insulation
- Sulfur Recovery Unit Linings
- Hydroprocessing Reactor Insulation
Ceramic & Glass Industries
- Roller Kiln Thermal Systems
- Tunnel & Shuttle Kiln Insulation
- Glass Melting Furnace Linings
- Advanced Ceramic Firing Systems
Specialized Applications
- Waste-to-Energy Incineration Systems
- Carbon Black Production Reactors
- Electric Arc Furnace Insulation
- Industrial Heat Treatment Systems
Hubei Zhongnai New Material Technology Co., Ltd.
As a leading high-technology enterprise specializing in advanced refractory material research, development, and manufacturing, we are committed to delivering superior thermal management solutions and professional technical support to high-temperature industries worldwide.
Our dedication to innovation, quality excellence, and sustainable development drives continuous advancement in energy-efficient refractory technologies for global industrial applications.
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For more product information or technical support, please contact us
Contact Information
Contact:+86-19171489999
Address: Yangzhai Town Metallurgical Industrial Park, Guangshui City, Hubei Province
Copyright©Hubei Zhongnai New Material Technology Co., Ltd.
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