Cast Corundum Mullite Bricks are high-performance refractory materials widely used in high-temperature industrial furnaces due to its excellent physical and chemical properties, making it particularly suitable for harsh high-temperature environments.It is primarily composed of the following two main mineral phases:Corundum and Mullite, In addition, cast corundum mullite brick may contain small amounts of additives ( binders or fluxes) to optimize its performance. Raw materials typically include high-purity alumina (such as fused or sintered corundum), silica-based materials (such as high-purity quartz or silica), and other auxiliary materials.
Technical data of Cast corundum mullite bricks
|
Item |
Cast Corundum Mullite Bricks |
|
|
CCM-80 |
CCM-85 |
|
|
Al2O3, ≥% |
80 |
85 |
|
Fe2O3, ≤% |
0.5 |
0.5 |
|
Bulk Density, ≥g/cm³ |
2.7 |
2.7 |
|
Apparent Porosity ,≤% |
22 |
21 |
|
Cold Crushing strength, ≥Mpa |
75 |
80 |
|
0.2Mpa Refractoriness under load, ≥℃ |
1650 |
1680 |
|
Thermal shock resistance(1100℃water-cooling)Times, ≥ |
20 |
20 |
Key Characteristics and Performance:
Due to its unique composition and process,Corundum-mullite castable refractory brick exhibits the following notable properties:
High Refractoriness and refractoriness under load:
Refractoriness typically above 1790℃ and refractoriness under load above 1650℃. This ensures structural stability and resistance to deformation in ultra-high temperature conditions.
Good High-Temperature Strength and Creep Resistance:
The tight crystalline structure of corundum and mullite at high temperatures gives the bricks high compressive strength (typically >100 MPa) and creep resistance, allowing them to withstand the heavy loads of materials and their own structure inside the furnace.
Excellent Thermal Shock Resistance:
Mullite's low thermal expansion coefficient (approximately 4.5–5.5×10⁻⁶/°C) ensures the brick resists cracking in rapid temperature changes.
Outstanding Corrosion Resistance:
Both corundum and mullite have excellent chemical stability, effectively resisting corrosion from acidic slag, alkaline slag, and various high-temperature gases. This is crucial for industrial furnaces that are in long-term contact with corrosive media.
Low Porosity and High Bulk Density:
The cast molding process results in a denser brick structure with low porosity. This not only increases strength but also reduces the penetration of molten materials and gases, further enhancing corrosion resistance.
Low Thermal Conductivity:
Mullite's low thermal conductivity (approximately 1.5–2.5 W/m·K) provides some insulation, reducing heat loss.
Excellent volume stability:
Minimal linear change at high temperature
High Dimensional Stability and Construction convenience:
The casting process ensures precise brick dimensions, suitable for complex shapes and furnace linings.
Good integrity:
Seamless structure with excellent air tightness
Our Products
Application Areas
Due to their superior performance, Castable alumina-mullite brick is primarily used in industries with extremely demanding refractory material requirements:
Glass Furnaces:
The Critical parts of a glass furnace, including the superstructure, sidewalls, furnace bottom, throat, and regenerators, are designed to effectively withstand corrosion from molten glass and high-temperature gases.
Petrochemical Industry:
widely used in the linings of secondary reformers for ammonia synthesis,reforming furnace,carbon black reactors, petrochemical cracking furnaces and gasifiers, hazardous waste incinerators, and other corrosive environments,capable of withstanding high temperatures, high pressure, and various corrosive gases.
Ceramic Industry:
Used in high-temperature ceramic kilns, pusher kilns, and shuttle kilns as a load-bearing and refractory structural material.
Iron and Steel Industry:
Used in Blast furnace tuyeres, iron troughs, and tapping spouts hot blast stoves, steel ladles,reheating furnace hot zones,RH furnace linings,Critical parts of converter and electric furnace,Continuous casting tundish, nozzle bricks
Cement Industry:
Used in rotary kiln Transition zone, burning zone, cooler, preheaters, precalciner and burners ,enduring high temperatures and alkaline corrosion.
Nonferrous metallurgy:
Aluminum electrolytic cells, zinc and magnesium smelting furnaces,Copper and aluminum smelting furnace lining
Packaging and Shipping of Corundum Mullite Bricks:
All delivered goods are packaged in strict compliance with the buyer's requirements as well as relevant national and industry standards.
Shaped products such as refractory bricks and precast blocks are typically packaged on wooden pallets, wrapped with stretch film for sealing, and secured with plastic-steel strapping.
Unshaped refractory materials are packaged in 25-50kg plastic bags, with additional outer protection using bulk bags.
Our company provides customized packaging solutions including containers, wooden cases, metal boxes, and moisture-proof marine packaging, fully compliant with both local regulations and corporate requirements in your market.
Our company
Why choose us?
Your Trusted Partner for High-Performance Refractory Solutions
In high-temperature industries, the performance of refractory materials directly affects equipment safety, operational efficiency, and maintenance costs.
We are committed to providing reliable, durable, and customized refractory solutions for industrial furnaces worldwide.
Proven Quality You Can Trust
We strictly follow the ISO 9001 quality management system, ensuring that every product meets international standards.
Full-process quality control from raw materials to delivery
Stable and consistent product performance
Continuous quality improvement system
Result: Reliable refractory performance and reduced operational risks
Engineering-Driven Custom Solutions
We don't just supply products - we provide complete refractory solutions.
Furnace condition analysis
Material selection optimization
Customized precast and lining design
Result: Better performance, longer service life, lower total cost
Extensive Project Experience
With years of experience in refractory applications, we have successfully supported projects in:
Rotary kilns (cement, lime, nickel, hazardous waste)
CFB boilers and power plants
Steel and metallurgical furnaces
Waste incineration systems
Result: Proven solutions for complex and demanding environments
High-Quality Raw Materials
We carefully select raw materials from trusted and certified suppliers.
Strict supplier evaluation system
Stable raw material sourcing
High-purity alumina and premium aggregates
Result: Consistent product quality and long-term durability
Advanced Manufacturing Capability
Our modern production facilities and automated lines ensure precision and stability.
Fully automated production processes
Standardized manufacturing procedures
Strict process control checkpoints
Result: Uniform quality across every batch
Get a Quote：
If you are looking for high quality refractory materials, please contact us for more information and technical support.
Shandong Luming New Materials Technology Co., LTD
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