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This rectangle dense-alumina honeycomb ceramic is developed for service in high-temperature, high-load, chemically demanding environments where ordinary cordierite honeycombs reach their limits. Using an alumina-porcelain body with very low water absorption (≈0.1%) and higher solid density (about 2.4 g/cm³), it maintains shape and strength in furnaces, kilns, after-burners and hot exhaust ducts running close to 1200 °C.
The rectangle monolith configuration makes it easy to stack into regenerator boxes or to use as a substrate for catalytic/wash-coat layers. For B2B buyers who need refractory, dense, high-alumina, rectangle honeycomb parts, this design offers longer life and better mechanical safety than lightweight ceramics.
Refractory for 1200 °C class equipment – suitable for kilns, thermal treatment lines, high-temperature exhaust.
Dense, low-absorption body – 0.1% water absorption helps resist chemical attack and thermal cycling with hot, wet gas.
Higher mechanical strength – dense alumina structure tolerates vertical stacking, clamping and vibration better than cordierite.
Rectangle , easy-to-pack modules – designed for industrial chambers, regenerator boxes and catalyst blocks.
| Category / Item | Unit / Description | Value |
|---|---|---|
Material & Form | ||
| Material | — | Dense alumina / alumina porcelain honeycomb |
| Shape | — | rectangle / monolithic block |
Thermal Properties | ||
| Max working temperature | °C (continuous, gas) | ≤ 1200 |
| Start of softening | °C | 1200 – 1300 |
| Thermal shock resistance | Rapid cool ΔT | ≈ 210 K |
| Linear thermal expansion (20–1000 °C) | ×10⁻⁶ /K | 4.9 |
Physical / Structural | ||
| Solid density | g/cm³ | ≈ 2.4 |
| Water absorption | % | 0.1 |
| Cell size / CPSI | mm / customizable | From 1.2 mm, 64–400 CPSI |
Mechanical & Safety | ||
| Compressive strength (longitudinal) | MPa | > 25 |
| Compressive strength (transverse) | MPa | > 12 |
| Emission index (CO) | ppm | ≤ 80 |
| Emission index (NOₓ) | ppm | ≤ 10 |
Dimension & Customization | ||
| Standard section size | mm | 135 × 95 (rectangle ) or custom |
| Length range | mm | 25 – 300 (customizable) |
Regenerator / checker blocks in kilns, metallurgical and glass furnaces
High-temperature exhaust-gas purification close to 1000–1200 °C
Carrier/substrate for catalytic or protective coatings in chemical and paint-baking lines
Refractory honeycomb inserts for combustion chambers and after-burners
Replacement of cordierite modules where mechanical load or gas temperature is higher
Q1: When should I select dense alumina instead of cordierite?
Use dense alumina when your equipment runs near 1200 °C or the bed must carry higher mechanical/stacking loads.
Q2: Can you make other rectangle sizes?
Yes. 150×150 mm is common, but we can supply other rectangle sections and 25–300 mm lengths.
Q3: Is it coatable for VOC / CO control?
Yes. The alumina surface is stable and can be wash-coated for catalytic or filtration purposes.
Q4: What CPSI range is available?
Typically 64–400 CPSI; we match it to your pressure-drop and heat-transfer targets.
Q5: Do you support OEM and long-term supply?
Yes. Hunan Zhonghong New Material (hnzh88.com) can deliver stable batches for furnace, RTO/RCO and burner manufacturers.
This rectangle dense-alumina honeycomb ceramic is developed for service in high-temperature, high-load, chemically demanding environments where ordinary cordierite honeycombs reach their limits. Using an alumina-porcelain body with very low water absorption (≈0.1%) and higher solid density (about 2.4 g/cm³), it maintains shape and strength in furnaces, kilns, after-burners and hot exhaust ducts running close to 1200 °C.
The rectangle monolith configuration makes it easy to stack into regenerator boxes or to use as a substrate for catalytic/wash-coat layers. For B2B buyers who need refractory, dense, high-alumina, rectangle honeycomb parts, this design offers longer life and better mechanical safety than lightweight ceramics.
Refractory for 1200 °C class equipment – suitable for kilns, thermal treatment lines, high-temperature exhaust.
Dense, low-absorption body – 0.1% water absorption helps resist chemical attack and thermal cycling with hot, wet gas.
Higher mechanical strength – dense alumina structure tolerates vertical stacking, clamping and vibration better than cordierite.
Rectangle , easy-to-pack modules – designed for industrial chambers, regenerator boxes and catalyst blocks.
| Category / Item | Unit / Description | Value |
|---|---|---|
Material & Form | ||
| Material | — | Dense alumina / alumina porcelain honeycomb |
| Shape | — | rectangle / monolithic block |
Thermal Properties | ||
| Max working temperature | °C (continuous, gas) | ≤ 1200 |
| Start of softening | °C | 1200 – 1300 |
| Thermal shock resistance | Rapid cool ΔT | ≈ 210 K |
| Linear thermal expansion (20–1000 °C) | ×10⁻⁶ /K | 4.9 |
Physical / Structural | ||
| Solid density | g/cm³ | ≈ 2.4 |
| Water absorption | % | 0.1 |
| Cell size / CPSI | mm / customizable | From 1.2 mm, 64–400 CPSI |
Mechanical & Safety | ||
| Compressive strength (longitudinal) | MPa | > 25 |
| Compressive strength (transverse) | MPa | > 12 |
| Emission index (CO) | ppm | ≤ 80 |
| Emission index (NOₓ) | ppm | ≤ 10 |
Dimension & Customization | ||
| Standard section size | mm | 135 × 95 (rectangle ) or custom |
| Length range | mm | 25 – 300 (customizable) |
Regenerator / checker blocks in kilns, metallurgical and glass furnaces
High-temperature exhaust-gas purification close to 1000–1200 °C
Carrier/substrate for catalytic or protective coatings in chemical and paint-baking lines
Refractory honeycomb inserts for combustion chambers and after-burners
Replacement of cordierite modules where mechanical load or gas temperature is higher
Q1: When should I select dense alumina instead of cordierite?
Use dense alumina when your equipment runs near 1200 °C or the bed must carry higher mechanical/stacking loads.
Q2: Can you make other rectangle sizes?
Yes. 150×150 mm is common, but we can supply other rectangle sections and 25–300 mm lengths.
Q3: Is it coatable for VOC / CO control?
Yes. The alumina surface is stable and can be wash-coated for catalytic or filtration purposes.
Q4: What CPSI range is available?
Typically 64–400 CPSI; we match it to your pressure-drop and heat-transfer targets.
Q5: Do you support OEM and long-term supply?
Yes. Hunan Zhonghong New Material (hnzh88.com) can deliver stable batches for furnace, RTO/RCO and burner manufacturers.
