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Hunan ZhongHong’s Corundum Dense Alumina Honeycomb Ceramics represent the pinnacle of high-performance refractory materials. Unlike standard cordierite plates, our Corundum-based honeycomb structures are engineered from high-purity Alpha-Alumina, offering unparalleled thermal stability, mechanical strength, and chemical resistance in extreme environments.
Designed primarily for Regenerative Thermal Oxidizers (RTO), Regenerative Catalytic Oxidizers (RCO), and Regenerative Burners, these dense monoliths serve as high-efficiency heat storage media and catalyst substrates. They are built to withstand temperatures up to 1600°C - 1800°C, making them indispensable for heavy industries like steel, petrochemicals, and metallurgy.
Our manufacturing process ensures a high-density, low-porosity structure that maximizes heat capacity and service life.
| Properties | Unit | Corundum Alumina Value |
| Material Composition | - | $\alpha-Al_2O_3$ > 95% - 99% (Corundum) |
| Bulk Density | $g/cm^3$ | 3.2 - 3.8 (Dense/Heavy type) |
| Water Absorption | % | < 0.5% (High Density) |
| Refractoriness | °C | ≥ 1850°C |
| Max Working Temp | °C | 1600°C (Long-term) / 1800°C (Short-term) |
| Thermal Expansion | $10^{-6}/K$ | 7.0 - 8.5 (Predictable & Stable) |
| Cold Crushing Strength | MPa | Axial ≥ 50 / Lateral ≥ 15 |
| Acid/Alkali Resistance | % | ≥ 99.8% (Highly Resistant) |
Corundum (Alumina) is one of the hardest and most heat-resistant ceramic materials. While standard ceramics soften at 1200°C, our dense alumina honeycomb remains structurally sound and chemically inert even under the searing heat of industrial melting furnaces and hot blast stoves.
The Dense nature of our alumina means it has a much higher volumetric heat capacity than lightweight alternatives. In heat exchange systems, this allows for faster thermal absorption and release, reducing energy loss and cutting fuel consumption by up to 40% - 50%.
In industrial flue gas environments, acidic or alkaline vapors can quickly erode inferior ceramics. Our corundum monoliths are resistant to chemical scouring, alkali vapors, and high-temperature slag, preventing channel blockage and extending the maintenance cycle of your equipment.
The precision-extruded honeycomb structure features straight, smooth channels. This design minimizes airflow resistance, reducing the workload on exhaust fans and ensuring high-volume gas throughput without significant pressure loss.
RTO & RCO Systems: Used as the primary heat exchange media in Regenerative Thermal/Catalytic Oxidizers for VOC (Volatile Organic Compound) treatment in chemical and pharmaceutical plants.
Steel & Metallurgy: Ideal for regenerative burners in heating furnaces, soaking pits, and ladle baking systems.
Petrochemical Industry: Applied in cracking furnaces and high-temperature reactors where chemical stability is critical.
Industrial Kiln Furniture: Serving as high-load setters and supports in high-temperature kilns for ceramic and ferrite production.
As a leading manufacturer in Hunan, Hunan ZhongHong New Material Technology Co., Ltd. leverages advanced automatic continuous tunnel kilns and high-pressure molding technology to ensure consistency in every block.
Advanced Formulation: We utilize high-purity electro-fused corundum and sintered alumina.
Customizable Cell Density: Available in various cell geometries (Square, Hexagonal, Circular) and densities (from 25 CPSI to 400 CPSI).
Proven Performance: Our products are widely used in large-scale domestic and international environmental protection projects, consistently outperforming competitors in thermal shock stability tests.
For optimal performance in RTO/RCO systems:
Proper Stacking: Ensure the honeycomb blocks are stacked tightly to avoid bypass airflow.
Thermal Ramping: While corundum is highly durable, a gradual heat-up cycle is recommended during the first commission to eliminate residual moisture.
Cleaning: Periodically check for dust accumulation. High-pressure air or steam can be used to clear channels without damaging the dense alumina structure.
Our facility is fully ISO9001 certified. Every batch of Corundum Dense Alumina Honeycomb undergoes rigorous testing for:
Dimensional accuracy (Tolerances < ±1mm)
High-temperature compressive strength
Chemical composition analysis via XRF/XRD
Looking for a high-durability refractory solution? Contact our technical sales team for custom dimensions and technical consultation.
Hunan ZhongHong’s Corundum Dense Alumina Honeycomb Ceramics represent the pinnacle of high-performance refractory materials. Unlike standard cordierite plates, our Corundum-based honeycomb structures are engineered from high-purity Alpha-Alumina, offering unparalleled thermal stability, mechanical strength, and chemical resistance in extreme environments.
Designed primarily for Regenerative Thermal Oxidizers (RTO), Regenerative Catalytic Oxidizers (RCO), and Regenerative Burners, these dense monoliths serve as high-efficiency heat storage media and catalyst substrates. They are built to withstand temperatures up to 1600°C - 1800°C, making them indispensable for heavy industries like steel, petrochemicals, and metallurgy.
Our manufacturing process ensures a high-density, low-porosity structure that maximizes heat capacity and service life.
| Properties | Unit | Corundum Alumina Value |
| Material Composition | - | $\alpha-Al_2O_3$ > 95% - 99% (Corundum) |
| Bulk Density | $g/cm^3$ | 3.2 - 3.8 (Dense/Heavy type) |
| Water Absorption | % | < 0.5% (High Density) |
| Refractoriness | °C | ≥ 1850°C |
| Max Working Temp | °C | 1600°C (Long-term) / 1800°C (Short-term) |
| Thermal Expansion | $10^{-6}/K$ | 7.0 - 8.5 (Predictable & Stable) |
| Cold Crushing Strength | MPa | Axial ≥ 50 / Lateral ≥ 15 |
| Acid/Alkali Resistance | % | ≥ 99.8% (Highly Resistant) |
Corundum (Alumina) is one of the hardest and most heat-resistant ceramic materials. While standard ceramics soften at 1200°C, our dense alumina honeycomb remains structurally sound and chemically inert even under the searing heat of industrial melting furnaces and hot blast stoves.
The Dense nature of our alumina means it has a much higher volumetric heat capacity than lightweight alternatives. In heat exchange systems, this allows for faster thermal absorption and release, reducing energy loss and cutting fuel consumption by up to 40% - 50%.
In industrial flue gas environments, acidic or alkaline vapors can quickly erode inferior ceramics. Our corundum monoliths are resistant to chemical scouring, alkali vapors, and high-temperature slag, preventing channel blockage and extending the maintenance cycle of your equipment.
The precision-extruded honeycomb structure features straight, smooth channels. This design minimizes airflow resistance, reducing the workload on exhaust fans and ensuring high-volume gas throughput without significant pressure loss.
RTO & RCO Systems: Used as the primary heat exchange media in Regenerative Thermal/Catalytic Oxidizers for VOC (Volatile Organic Compound) treatment in chemical and pharmaceutical plants.
Steel & Metallurgy: Ideal for regenerative burners in heating furnaces, soaking pits, and ladle baking systems.
Petrochemical Industry: Applied in cracking furnaces and high-temperature reactors where chemical stability is critical.
Industrial Kiln Furniture: Serving as high-load setters and supports in high-temperature kilns for ceramic and ferrite production.
As a leading manufacturer in Hunan, Hunan ZhongHong New Material Technology Co., Ltd. leverages advanced automatic continuous tunnel kilns and high-pressure molding technology to ensure consistency in every block.
Advanced Formulation: We utilize high-purity electro-fused corundum and sintered alumina.
Customizable Cell Density: Available in various cell geometries (Square, Hexagonal, Circular) and densities (from 25 CPSI to 400 CPSI).
Proven Performance: Our products are widely used in large-scale domestic and international environmental protection projects, consistently outperforming competitors in thermal shock stability tests.
For optimal performance in RTO/RCO systems:
Proper Stacking: Ensure the honeycomb blocks are stacked tightly to avoid bypass airflow.
Thermal Ramping: While corundum is highly durable, a gradual heat-up cycle is recommended during the first commission to eliminate residual moisture.
Cleaning: Periodically check for dust accumulation. High-pressure air or steam can be used to clear channels without damaging the dense alumina structure.
Our facility is fully ISO9001 certified. Every batch of Corundum Dense Alumina Honeycomb undergoes rigorous testing for:
Dimensional accuracy (Tolerances < ±1mm)
High-temperature compressive strength
Chemical composition analysis via XRF/XRD
Looking for a high-durability refractory solution? Contact our technical sales team for custom dimensions and technical consultation.
