Lightweight Fire Clay Insulation Bricks Low Thermal Conductivity And Energy-Efficient Kiln Lining
High-Temperature Refractory & Thermal Insulation Solutions
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
| Category | Key Performance Characteristics |
|---|---|
| Al₂O₃ Content | 25% – 48% |
| Fe₂O₃ Content | ≤ 2.5% |
| Bulk Density | 0.5 – 1.2 g/cm³ |
| Cold Crushing Strength | 1.0 – 5.0 MPa |
| Max Service Temperature | 900°C – 1,260°C |
| Thermal Conductivity (350°C) | 0.18 – 0.65 W/m·K |
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)
Q1:Do you offer samples?
A: Please ask us. We may send a small sample piece so you can check the quality and size.
Q2: What if some bricks arrive broken?
A:Take photos of the broken bricks and the packing. Contact us within 48 hours. We will arrange a replacement or refund.
Q3: Can you provide customized shapes?
A: Yes, we provide vacuum-formed custom shapes, blocks, and modules based on your CAD drawings to ensure a perfect fit for your equipment.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.