+86-15527482889
Hot Products
0102030405
China Mullite Insulation Brick Suppliers - Cost-Effective Energy-Saving Refractory Factory Solutions
Core Advantages
Outstanding Energy Conservation & Insulation, Significant Cost Reduction & Efficiency Boost
With a thermal conductivity as low as 0.15 W/(m·k) (at 400℃), our mullite insulation brick features a uniform internal microporous structure that efficiently blocks high-temperature conduction, reducing furnace heat loss. This energy-saving performance is particularly prominent in intermittent operation kilns, greatly enhancing overall production efficiency.
Exceptional High-Temperature & Corrosion Resistance, Versatile for Harsh Working Conditions
Containing 37%-77% Al₂O₃ and strictly controlling impurities like Fe₂O₃ and K₂O, it withstands erosion from acidic and alkaline media and maintains stable performance even in reducing atmospheres, making it ideal for various harsh high-temperature industrial environments.
Green & Eco-Friendly, Safe & Reliable Performance
Produced from natural mineral raw materials, our mullite insulation brick emits no harmful components and complies with global environmental protection standards. Its lightweight design (bulk density 0.5-1.35 g/cm³) reduces furnace load, avoids structural overload risks, and ensures safe, continuous equipment operation.
Product Parameters
| Mullite Insulation Brick | |||||||
| JM23 | JM26 | JM28 | |||||
| 42 | 42 | 45 | 45 | 55 | 55 | 60 | 60 |
| 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| 0.5 | 0.6 | 0.8 | 1.0 | 0.8 | 1.0 | 1.0 | 1.2 |
| 1.0 | 1.5 | 1.8 | 2.5 | 2.0 | 2.5 | 2.5 | 3.0 |
| 1260 | 1260 | 1300 | 1300 | 1400 | 1400 | 1450 | 1450 |
| 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| ≤0.16 | ≤0.20 | 0.25 | 0.30 | 0.25 | 0.30 | 0.30 | 0.45 |
Detailed Application Scenarios
1
Metallurgy Industry
◎ Our mullite insulation brick is perfectly suited for blast furnace hot blast stoves, circular cooler trolleys, sinter cooling equipment, and more. It endures repeated 800-1200℃ temperature shocks, with wear resistance 1.5 times that of ordinary castables. It reduces heat conduction in trolley steel structures and improves cooling efficiency by 5%-8% for enhanced metallurgical production efficiency.
2
Ceramics & Building Materials Industry
◎ Ideal for linings and insulation layers of ceramic tunnel kilns, roller kilns, and shuttle kilns, our mullite insulation brick precisely controls furnace temperature uniformity, minimizes heat loss, and facilitates uniform sintering of ceramic green bodies. It extends kiln service life and reduces maintenance frequency, cutting operational costs for ceramic and building materials enterprises.
3
Glass Industry
◎ Used in insulation structures of glass melting furnaces and annealing furnaces, our high-temperature mullite insulation brick withstands temperatures above 1500℃ and exhibits strong chemical stability. It resists glass slag erosion, prevents lining peeling from contaminating glass liquid, and ensures consistent glass product quality.
4
Petrochemical Industry
◎ Our mullite insulation brick is applicable to residual oil gasifiers, ammonia synthesis secondary reformers, carbon black reactors, and other petrochemical equipment. It endures high temperatures, high pressures, and corrosive gases, delivering excellent sealing and insulation effects to ensure continuous, safe equipment operation and reduce potential safety hazards.
Conclusion
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions
What is the maximum service temperature of your mullite insulation brick?
Our mullite insulation bricks cover a wide temperature range depending on the grade. JM23 is rated up to 1260℃, JM26 up to 1400℃, and JM28 up to 1450℃. For applications exceeding 1500℃, such as glass melting furnaces, our high-temperature mullite grades are specifically engineered to maintain structural integrity and chemical stability.
How does the mullite insulation brick achieve its low thermal conductivity?
The brick's low thermal conductivity — as low as 0.15 W/(m·k) at 400℃ — is achieved through a carefully engineered uniform internal microporous structure. These microscopic pores act as thermal barriers, significantly reducing heat transfer through the brick and minimizing furnace heat loss during both continuous and intermittent kiln operations.
Is the mullite insulation brick suitable for use in reducing atmospheres?
Yes. By strictly controlling impurity levels such as Fe₂O₃ and K₂O, and maintaining an Al₂O₃ content between 37%-77%, our mullite insulation bricks maintain stable performance in reducing atmospheres. They are widely used in metallurgical and petrochemical environments where reducing gas conditions are common.
What makes mullite insulation brick an eco-friendly choice?
Our mullite insulation bricks are manufactured from natural mineral raw materials and emit no harmful substances during production or use, fully complying with global environmental protection standards. Their lightweight nature (bulk density 0.5–1.35 g/cm³) also reduces the overall structural load of industrial furnaces, contributing to lower energy consumption and a reduced carbon footprint.
Can mullite insulation bricks be used in ceramic kiln applications?
Absolutely. Mullite insulation bricks are an ideal choice for ceramic tunnel kilns, roller kilns, and shuttle kilns. They provide precise temperature uniformity control, minimize heat loss, and support uniform sintering of ceramic green bodies. Their extended service life and reduced maintenance frequency directly lower operational costs for ceramic and building materials manufacturers.
What customization options are available for mullite insulation bricks?
We offer mullite insulation bricks in multiple grades (JM23, JM26, JM28) with varying bulk densities, Al₂O₃ content, and thermal conductivity values to suit different industrial requirements. Custom shapes, dimensions, and technical specifications can be arranged to meet specific kiln or furnace designs. Please contact us directly with your project details for a tailored solution and quote.