Mullite Insulation Brick
Application Industry: Common Refractory Materials
Application Equipment: Metallurgy, Machinery, Ceramics, and Chemical Industry Kiln Lining (not eroded by molten liquid), and Insulation Layer
Size: Custom mullite insulation brick geometry per industrial kiln design (free engineering on request)
Products Overview
Our Mullite Insulation Brick is a high-performance refractory product engineered for metallurgy, machinery, ceramics, and chemical industry kiln lining and insulation layer service. This series of products adopts high-purity raw materials and unique production process to minimize the influence of impurities and structural defects on the performance of the product. It has excellent high temperature volume stability and thermal shock stability, high strength and low thermal conductivity. It has wide adaptability to various furnace types and various environments. It can be used in kiln lining (not eroded by molten liquid) and insulation layer in metallurgy, machinery, ceramics, chemical industry, etc.
The Mullite Insulation Brick product family is offered in eight engineering-proven JM23, JM26, JM28 chemistry grades. The JM23-0.6 grade features Al2O3 content minimum 48% for general industrial kiln insulation service, with Bulk Density minimum 0.6 g/cm3, Cold Crushing Strength minimum 1.5 MPa, Thermal Shock Resistance minimum 10 cycles at 1100 °C water cooling, Permanent Linear Change maximum 2 percent after 1300 °C drying for 12 hours, and Thermal Conductivity maximum 0.2 W/m.k. The JM23-0.8 grade features Al2O3 content minimum 49% for general industrial kiln insulation service, with Bulk Density minimum 0.8 g/cm3, Cold Crushing Strength minimum 2.5 MPa, Thermal Shock Resistance minimum 20 cycles at 1100 °C water cooling, Permanent Linear Change maximum 2 percent after 1300 °C drying for 12 hours, and Thermal Conductivity maximum 0.23 W/m.k. The JM23-1.0 grade features Al2O3 content minimum 50% for general industrial kiln insulation service, with Bulk Density minimum 1.0 g/cm3, Cold Crushing Strength minimum 4.2 MPa, Thermal Shock Resistance minimum 20 cycles at 1100 °C water cooling, Permanent Linear Change maximum 2 percent after 1300 °C drying for 12 hours, and Thermal Conductivity maximum 0.33 W/m.k. The JM26-0.6 grade features Al2O3 content minimum 55% for higher-demand industrial kiln insulation service, with Bulk Density minimum 0.6 g/cm3, Cold Crushing Strength minimum 1.5 MPa, Thermal Shock Resistance minimum 10 cycles at 1100 °C water cooling, Permanent Linear Change maximum 2 percent after 1400 °C drying for 12 hours, and Thermal Conductivity maximum 0.2 W/m.k. The JM26-0.8 grade features Al2O3 content minimum 57% for higher-demand industrial kiln insulation service, with Bulk Density minimum 0.8 g/cm3, Cold Crushing Strength minimum 3.2 MPa, Thermal Shock Resistance minimum 20 cycles at 1100 °C water cooling, Permanent Linear Change maximum 2 percent after 1400 °C drying for 12 hours, and Thermal Conductivity maximum 0.25 W/m.k. The JM26-1.0 grade features Al2O3 content minimum 57% for higher-demand industrial kiln insulation service, with Bulk Density minimum 1.0 g/cm3, Cold Crushing Strength minimum 4.0 MPa, Thermal Shock Resistance minimum 20 cycles at 1100 °C water cooling, Permanent Linear Change maximum 2 percent after 1400 °C drying for 12 hours, and Thermal Conductivity maximum 0.33 W/m.k. The JM28-1.0 grade features Al2O3 content minimum 60% for highest-demand industrial kiln insulation service, with Bulk Density minimum 1.0 g/cm3, Cold Crushing Strength minimum 4.0 MPa, Thermal Shock Resistance minimum 20 cycles at 1100 °C water cooling, Permanent Linear Change maximum 2 percent after 1500 °C drying for 12 hours, and Thermal Conductivity maximum 0.35 W/m.k. The JM28-1.2 grade features Al2O3 content minimum 67% for highest-demand industrial kiln insulation service, with Bulk Density minimum 1.2 g/cm3, Cold Crushing Strength minimum 5.0 MPa, Thermal Shock Resistance minimum 20 cycles at 1100 °C water cooling, Permanent Linear Change maximum 2 percent after 1500 °C drying for 12 hours, and Thermal Conductivity maximum 0.4 W/m.k.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Mullite Insulation Brick grade is engineered to ASTM, GB/T, and ISO refractory standards. For an overview of the broader catalogue, see the Common Refractory Materials category, or contact our technical sales team for a free consultation against your refractory drawing.
Product Features
Features:
- Manufactured by Zhengzhou caihua with high-purity raw materials and unique production process to minimize the influence of impurities and structural defects on the performance of the product
- Engineering-proven characterized with excellent high temperature volume stability and thermal shock stability, high strength, and low thermal conductivity
- Eight JM23, JM26, JM28 chemistry grades covering Al2O3 content 48-67% and Bulk Density 0.6 to 1.2 g/cm3 for matching different industrial kiln insulation service requirements
- Has wide adaptability to various furnace types and various environments, suitable for kiln lining (not eroded by molten liquid) and insulation layer in metallurgy, machinery, ceramics, and chemical industry
- Low thermal conductivity with Thermal Conductivity maximum 0.2 to 0.4 W/m.k and high thermal shock resistance minimum 10-20 cycles at 1100 °C water cooling for industrial kiln insulation service
Product Specification
Mullite insulating brick
This series of products adopts high-purity raw materials and unique production process to minimize the influence of impurities and structural defects on the performance of the product. It has excellent high temperature volume stability and thermal shock stability, high strength and low thermal conductivity. It has wide adaptability to various furnace types and various environments. It can be used in kiln lining (not eroded by molten liquid) and insulation layer in metallurgy, machinery, ceramics, chemical industry, etc.
| Brands / Items | JM23-0.6 | JM23-0.8 | JM23-1.0 | JM26-0.6 | ZJM26 | JM26-1.0 | JM28-1.0 | JM28-1.2 |
|---|---|---|---|---|---|---|---|---|
| Bulk density (g/cm³) ≥ | 0.6 | 0.8 | 1.0 | 0.6 | 0.8 | 1.0 | 1.0 | 1.2 |
| Cold crushing strength (MPa) ≥ | 1.5 | 2.5 | 4.2 | 1.5 | 3.2 | 4.0 | 4.0 | 5 |
| Thermal shock resistance (1100°C) (cycle) ≥ | 10 | 20 | 20 | 10 | 20 | 20 | 20 | 20 |
| The reheating line changes by no more than 1% of the test temperature ≤ | 1300*12 | 1300*12 | 1300*12 | 1400*12 | 1400*12 | 1400*12 | 1500*12 | 1500*12 |
| Thermal conductivity average temperature 350±25°C (W/m.k) | 0.2 | 0.23 | 0.33 | 0.2 | 0.25 | 0.33 | 0.35 | 0.4 |
| Al2O3 (%) ≥ | 48 | 49 | 50 | 55 | 57 | 57 | 60 | 67 |
| Fe2O3 (%) | 0.9 | 0.9 | 0.9 | 0.8 | 0.8 | 0.8 | 0.7 | 0.6 |
Note: Seven performance parameters specified per source image: Bulk density, Cold crushing strength, Thermal shock resistance, Reheating line change test temperature, Thermal conductivity, Al2O3, and Fe2O3. Eight chemistry grades engineered for industrial kiln lining and insulation layer service. For project-specific chemistry and grade, contact CH Refractories engineering.
Product Applications
Mullite Insulation Brick is a high-performance refractory product engineered for metallurgy, machinery, ceramics, and chemical industry kiln lining and insulation layer service. This series of products adopts high-purity raw materials and unique production process to minimize the influence of impurities and structural defects on the performance of the product. It has excellent high temperature volume stability and thermal shock stability, high strength and low thermal conductivity. The mullite insulation brick product family has wide adaptability to various furnace types and various environments, with stable quality and good engineering performance across the global common refractory materials value chain.
Application Industry: Common Refractory Materials.
Target Equipment: Metallurgy, Machinery, Ceramics, and Chemical Industry Kiln Lining (not eroded by molten liquid), and Insulation Layer of small, medium-size, and large industrial operations across the global common refractory materials value chain.
Specific Application Zones: The JM23-0.6 grade (Al2O3 content minimum 48%) is the standard variant engineered for general industrial kiln insulation service, with Bulk Density minimum 0.6 g/cm3, Cold Crushing Strength minimum 1.5 MPa, and Thermal Conductivity maximum 0.2 W/m.k. The JM23-0.8 grade (Al2O3 content minimum 49%) is the higher-demand variant engineered for industrial kiln insulation service, with Bulk Density minimum 0.8 g/cm3, Cold Crushing Strength minimum 2.5 MPa, and Thermal Conductivity maximum 0.23 W/m.k. The JM23-1.0 grade (Al2O3 content minimum 50%) is the high-demand variant engineered for industrial kiln insulation service, with Bulk Density minimum 1.0 g/cm3, Cold Crushing Strength minimum 4.2 MPa, and Thermal Conductivity maximum 0.33 W/m.k. The JM26-0.6 grade (Al2O3 content minimum 55%) is the higher-demand variant engineered for industrial kiln insulation service, with Bulk Density minimum 0.6 g/cm3, Cold Crushing Strength minimum 1.5 MPa, and Thermal Conductivity maximum 0.2 W/m.k. The JM26-0.8 grade (Al2O3 content minimum 57%) is the higher-demand variant engineered for industrial kiln insulation service, with Bulk Density minimum 0.8 g/cm3, Cold Crushing Strength minimum 3.2 MPa, and Thermal Conductivity maximum 0.25 W/m.k. The JM26-1.0 grade (Al2O3 content minimum 57%) is the higher-demand variant engineered for industrial kiln insulation service, with Bulk Density minimum 1.0 g/cm3, Cold Crushing Strength minimum 4.0 MPa, and Thermal Conductivity maximum 0.33 W/m.k. The JM28-1.0 grade (Al2O3 content minimum 60%) is the highest-demand variant engineered for industrial kiln insulation service, with Bulk Density minimum 1.0 g/cm3, Cold Crushing Strength minimum 4.0 MPa, and Thermal Conductivity maximum 0.35 W/m.k. The JM28-1.2 grade (Al2O3 content minimum 67%) is the premium variant engineered for highest-demand industrial kiln insulation service, with Bulk Density minimum 1.2 g/cm3, Cold Crushing Strength minimum 5.0 MPa, and Thermal Conductivity maximum 0.4 W/m.k. All eight grades deliver Reheating Line Change maximum 2 percent after 1300-1500 °C drying for 12 hours and Thermal Shock Resistance minimum 10-20 cycles at 1100 °C water cooling for metallurgy, machinery, ceramics, and chemical industry kiln lining and insulation layer service, with stable quality and good engineering performance across the global common refractory materials value chain.
CH Refractories is a Mullite Insulation Brick manufacturer in China, Henan, Zhengzhou. The complete Mullite Insulation Brick product family is manufactured in our Xinmi City, Zhengzhou, Henan, China facility to ASTM, GB/T, and ISO refractory standards. Each batch is supported by free consultation, on-site technical support, and a dedicated engineering team serving Common Refractory Materials customers across the global common refractory materials value chain.
