Fire clay insulation bricks are lightweight refractory materials engineered from high-purity fire clay combined with insulating aggregates. These bricks feature a high-porosity structure (40%–70%) that effectively traps air, delivering superior thermal insulation while maintaining mechanical integrity at elevated temperatures.

With alumina (Al₂O₃) content typically ranging from 25% to 48% and bulk density between 0.5–1.2 g/cm³, these bricks offer an optimal balance of thermal efficiency and structural strength. Their low thermal conductivity (0.18–0.65 W/m·K at 350°C) significantly reduces heat loss and energy consumption in industrial thermal systems.

Technical Specifications

Why Choose Our Products?

• Energy efficiency: Low thermal conductivity reduces fuel consumption and operating costs
• Lightweight construction: Reduced structural stress and simplified installation compared to dense firebricks
• Thermal shock resistance: Engineered to withstand frequent temperature fluctuations without spalling or fatigue
• Versatile sizing: Available in standard dimensions (230×114×65 mm) and custom shapes to meet specific project requirements

Primary Applications

• Backup insulation layers in high-temperature kilns and industrial furnaces
• Hot-face linings in low-load thermal equipment such as heat treatment furnaces and ceramic tunnel kilns
• Metallurgical equipment: blast furnaces, hot blast furnaces, soaking furnaces
• Industrial thermal systems: boilers, incinerators, glass furnaces, reheating furnaces, and flue linings

Frequently Asked Questions (FAQ)