Honeycomb Ceramic Regenerator Material Selection Guide (Cordierite vs. Mullite)
Product Overview
The Honeycomb Ceramic Regenerative Heat Exchanger is a core component of Regenerative High-Temperature Air Combustion Technology. Featuring excellent properties including high-temperature resistance, corrosion resistance, high strength, and superior thermal conductivity, it significantly enhances thermal efficiency, reduces energy consumption, and extends service life of various industrial furnaces while effectively reducing pollutant emissions.
This product is widely used across industries such as steel, machinery manufacturing, building materials, chemical coatings, and non-ferrous metal smelting, including heating furnaces, hot blast stoves, heat treatment furnaces, cracking furnaces, roasting furnaces, soaking pits, and annealing furnaces.
Core Product Advantages
Excellent Thermal Performance
- High Specific Surface Area: Large heat exchange area per unit volume enables rapid and efficient heat transfer
- Low Flow Resistance: Optimized honeycomb channel design effectively reduces system pressure drop
- Fast Thermal Response: Shallow heat penetration depth allows for rapid heat storage and release cycles
Outstanding Stability & Environmental Benefits
- High-Temperature Performance: High refractoriness and load softening temperature ensure stable long-term operation under extreme heat
- Superior Thermal Shock Resistance: Excellent thermal stability withstands severe temperature fluctuations without cracking
- High Strength & Erosion Resistance: High mechanical strength tolerates冲刷 from high-speed gas flows
- Optional Catalytic Function: With added catalyst, promotes catalytic combustion of harmful substances like CO and HC in flue gas at around 600°C, achieving deep waste heat recovery and emission reduction simultaneously
Flexible Structural Design
- Variety of Cell Shapes: Available in square, round, hexagonal, and other cell types to meet different operational requirements
- Optimized Wall Configurations: Features various wall surface shapes including flat, slanted, single-channel, and double-channel, further optimizing gas flow distribution and heat exchange effectiveness
Key Technical Specifications
Chemical & Physical Property Index
| Chemical & Physical Property |
Cordierite |
Dense Cordierite |
Cordierite-Mullite |
Mullite |
Corundum-Mullite |
| Chemical Composition (%) |
|
|
|
|
|
| SiO₂ |
45 - 55 |
35 - 45 |
35 - 45 |
25 - 38 |
20 - 32 |
| Al₂O₃ |
30 - 38 |
40 - 50 |
40 - 50 |
50 - 65 |
65 - 73 |
| MgO |
10 - 15 |
3 - 13 |
3 - 13 |
- |
- |
| Thermal Expansion Coefficient (10⁻⁶/K) |
≈2 |
≈4 |
≈4 |
≈5 |
≈7 |
| Specific Heat Capacity (J/kg *K) |
830 - 900 |
850 - 950 |
850 - 1000 |
900 - 1050 |
900 - 1100 |
| Maximum Working Temperature (℃) |
<1300 |
<1300 |
<1350 |
<1450 |
<1500 |
| Key Features |
Ultra-low expansion, excellent thermal shock resistance |
Balanced strength & thermal shock resistance |
Good temperature resistance & thermal stability |
High-temperature performance |
Ultra-high temperature & chemical resistance |
Common Dimensions & Structural Parameters
| Dimensions (mm) |
Cell Density (Cells) |
Wall Thickness (mm) |
Inner Wall Thickness (mm) |
Cell Size (mm) |
Specific Surface Area (m²/m³) |
| 150×150×300 |
25×25 |
1.2 |
1.0 |
4.94 |
574 |
| 150×150×300 |
40×40 |
0.9 |
0.7 |
3.02 |
884 |
| 150×150×300 |
43×43 |
0.9 |
0.7 |
2.76 |
932 |
| 150×150×300 |
50×50 |
0.8 |
0.6 |
2.38 |
1082 |
| 150×150×300 |
60×60 |
0.7 |
0.5 |
1.99 |
1290 |
| 100×100×150 |
26×26 |
0.9 |
0.7 |
3.10 |
875 |
| 100×100×150 |
33×33 |
0.8 |
0.6 |
2.38 |
1082 |
Selection Guide
Select Material Based on Furnace Temperature
- Below 1300 °C: Prioritize Cordierite for its extremely low thermal expansion coefficient, offering the best thermal shock resistance
- 1300 °C ~ 1450°C: Choose Mullite or Cordierite-Mullite composite, balancing high-temperature resistance and stability
- Above 1450 °C & Harsh Environments: Recommend Corundum-Mullite for its highest refractoriness and chemical erosion resistance
Select Specifications Based on System Requirements
- Pursuing High Efficiency & Low Pressure Drop: Choose specifications with high cell density (e.g., 50×50, 60×60) and large specific surface area
- Handling Dusty or Easily Clogged Gases: Opt for specifications with larger cell size and thicker walls (e.g., 25×25) to improve anti-clogging capability and service life
Summary: Our Honeycomb Ceramic Regenerative Heat Exchangers provide diverse high-performance solutions through scientific material formulations and precise honeycomb structural design, making them the ideal choice for improving industrial furnace energy efficiency and achieving green production.
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