This square cordierite honeycomb ceramic is purpose-built for high-temperature, cyclic exhaust-gas purification in industrial lines such as paint-baking, printing/coating dryers, burner tail gas and VOC abatement units.
Using a low-expansion cordierite body (2.0–2.3×10⁻⁶/K) and a thin-wall square honeycomb structure, it tolerates rapid temperature swings from 850 °C back to ambient without cracking, while keeping pressure drop low. The square monolith format makes it easy to load multiple blocks into exhaust boxes, RTO inlets or purification chambers. It is a reliable option for OEMs who need stable exhaust cleanup, not only heat storage.
Built for hot exhaust – continuous service up to 1300 °C, suitable for burner flue and curing-oven tail gas.
Excellent thermal-shock endurance – 850 °C → 25 °C, 3 cycles, no crack; ideal for lines that start and stop daily.
Low weight, easy handling – 0.45–0.65 g/cm³ cordierite reduces frame load versus dense alumina.
Smooth gas flow – 33.5–36.4% opening rate and square channels help keep fan energy down.
Clean-burn support – CO ≤80 ppm, NOₓ ≤10 ppm after high-temperature operation.
| Category / Item | Unit / Description | Value |
|---|---|---|
| Material & Form | ||
| Material | — | Cordierite honeycomb ceramic |
| Shape | — | Square / monolithic block |
| Thermal Properties | ||
| Max working temperature | °C (exhaust, continuous) | ≤ 1300 |
| Softening temperature | °C | > 1375 |
| Thermal stability (thermal shock) | 850 °C → 25 °C, 3 cycles | No cracking |
| Linear thermal expansion (20–1000 °C) | ×10⁻⁶ /K | 2.0 – 2.3 |
| Physical / Structural | ||
| Bulk density | g/cm³ | 0.45 – 0.65 |
| Aperture / cell size | mm (CPSI customizable) | 1.12 – 1.42 |
| Opening rate | % | 33.5 – 36.4 |
| Mechanical & Safety | ||
| Compressive strength (longitudinal) | MPa | > 13 |
| Compressive strength (transverse) | MPa | > 6 |
| Emission index (CO) | ppm | ≤ 80 |
| Emission index (NOₓ) | ppm | ≤ 10 |
| Dimension & Customization | ||
| Standard section size | mm | 150 × 150 (square) |
| Length range | mm | 25 – 300 (customizable) |
High-temperature exhaust purification in coating / printing / paint-baking lines
Burner / boiler / LPG tail-gas ceramic elements
Inlet or middle sections of RTO/RCO where thermal cycling is frequent
VOC treatment equipment requiring both heat tolerance and low pressure drop
Exhaust boxes in chemical and light-industrial plants
Q1: What is the main difference from the heat-recovery model?
This model is tuned more for exhaust purification and thermal cycling than for maximum heat storage.
Q2: Can I change the cell density?
Yes, we can adjust cell size/CPSI to match your gas volume and the pressure-drop limit of your fan.
Q3: Is cordierite safe for daily start–stop lines?
Yes. Its low CTE and 850 °C shock performance make it suitable for start–stop and batch processes.
Q4: Can it work together with a catalytic coating?
Yes, the square honeycomb is a good substrate for wash-coating in VOC or CO oxidation units.
Q5: Do you supply OEM sizes?
Yes. Hunan Zhonghong New Material can produce customized square cordierite honeycombs for equipment makers.