K23 Insulating Fire Bricks are lightweight, high-strength refractory bricks designed to provide excellent thermal insulation in high-temperature applications up to 1350°C. Featuring low thermal conductivity and reliable resistance to thermal shock, they are perfect for energy-efficient linings in kilns, furnaces, and heat-treatment equipment.
Technical Specifications
| Property | Value |
|---|---|
| Al₂O₃ (%) | ≥45 |
| Fe₂O₃ (%) | ≤1.0 |
| Bulk Density (g/cm³) | 0.6–1.2 |
| Cold Crushing Strength (MPa) | 1.0–3.5 |
| Reheat Linear Change (1200°C×12h) % | ≤0.5 |
| Thermal Conductivity (200–600°C) (W/m·K) | 0.18–0.56 |
Key Features
- Excellent insulation with low heat storage
- Stable performance at high temperatures
- Uniform size for easy installation
- Low impurity content ensures clean firing
Typical Applications
- Insulating layers in ceramic, glass, and chemical kilns
- Backup linings in industrial furnaces
- Heat-treatment and tunnel furnaces
- Energy-saving linings in high-temperature equipment
Production Details
K23 Insulating Fire Bricks are made from high-purity raw materials and processed through advanced forming and controlled firing techniques to ensure excellent thermal insulation, structural stability, and consistent quality.
Packing and Shipping Details
- Packed in cartons with pallets or wooden cases
- Moisture-resistant wrapping for safe delivery
- Available in bulk orders and customizable packaging
Frequently Asked Questions (FAQ)
Q1: What is the maximum service temperature of K23 bricks?
K23 Insulating Fire Bricks can withstand temperatures up to 1350°C, making them suitable for high-temperature industrial applications.
Q2: Can K23 bricks be used in direct flame areas?
They are primarily designed for insulation and backup linings. For direct flame exposure, consult our technical team for guidance.
Q3: Are custom sizes available?
Yes, K23 bricks can be produced in various sizes to meet specific project requirements.
Q4: What industries commonly use K23 bricks?
They are widely used in ceramic and glass kilns, heat-treatment furnaces, tunnel kilns, and other high-temperature equipment.
Q5: How is the thermal conductivity of K23 bricks?
K23 bricks have low thermal conductivity (0.20–0.60 W/m·K at 200–600°C), providing excellent heat insulation and energy efficiency.
Q6: How are the bricks packed for shipping?
Bricks are packed in cartons with pallets or wooden cases and wrapped in moisture-proof material to ensure safe transport.
