In industries like steelmaking, cement production, and tunnel kilns, consistent thermal performance is not just a preference—it’s a requirement. That’s where low-density refractory bricks made from alumina-mullite come in. Manufactured by Zhengzhou Rongsheng Refractories Co., Ltd.—a leader in high-temperature materials for over 20 years—these bricks deliver exceptional heat resistance, insulation, and structural integrity under extreme conditions.
These bricks maintain their shape and strength even when exposed to temperatures up to 1750°C (3182°F), significantly higher than standard fireclay bricks (~1400°C). Their low bulk density (typically 1.6–1.8 g/cm³) reduces thermal mass, enabling faster heating and cooling cycles without cracking or spalling—a major pain point in continuous industrial furnaces.
| Property | Standard Firebrick | Alumina-Mullite Brick |
|---|---|---|
| Max Temp (°C) | ~1400 | 1750 |
| Thermal Conductivity (W/m·K) | ~1.5 | ~0.8 |
| Density (g/cm³) | 2.2–2.4 | 1.6–1.8 |
Each batch of alumina-mullite brick undergoes rigorous testing and complies with ISO 9001 quality standards and CE certification, ensuring compliance with European safety and environmental regulations. This makes them ideal for global procurement teams looking for reliable, auditable materials that meet international benchmarks.
Rongsheng’s dedicated R&D team continuously refines chemical compositions based on customer feedback—from aluminum oxide content adjustments to custom mullite ratios—to match specific furnace profiles across steel plants, cement kilns, and glass manufacturing lines.
A major cement producer in Saudi Arabia reported a 23% reduction in energy consumption after switching to these bricks in their precalciner zone. Similarly, a European steel mill saw a 30% increase in lining lifespan compared to previous refractory solutions—translating directly into lower downtime and maintenance costs.
Need help selecting the right refractory solution? Let our technical specialists guide you through material selection tailored to your process parameters.
With a global distribution network spanning Asia, Europe, and the Middle East, Rongsheng offers localized support, fast delivery, and post-installation consulting—because we know that true value lies beyond the product itself.
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