JM-23 Mullite Insulation Brick is a lightweight, high-purity refractory brick designed for efficient thermal insulation in high-temperature environments up to 1200°C. With low thermal conductivity and superior resistance to thermal shock, it is ideal for energy-saving linings in kilns and furnaces across various industries.
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
Low heat storage and excellent insulation performance
Stable performance at elevated temperatures
Precise dimensions and easy installation
Low impurity content for clean firing environments
Typical Applications
Insulating layer in ceramic and glass kilns
Backup linings in industrial furnaces
Heat-treatment furnaces and tunnel kilns
Production Details
Magnesia Carbon Refractory Bricks for steelmaking are manufactured using premium-grade fused magnesia and high-purity flake graphite as the main raw materials. The bricks are produced through a high-pressure forming process and undergo low-temperature treatment to maintain optimal carbon bonding and structural integrity.
Packing and Shipping Details
Packed in cartons with pallet or wooden cases
Moisture-proof wrapping for safe transport
Available for bulk orders and custom packaging
Frequently Asked Questions (FAQ)
Q1: What is the maximum service temperature of JM-23 Mullite Insulation Brick?
JM-23 Mullite Insulation Brick is suitable for continuous use at temperatures up to 1200°C.
Q2: What is the alumina (Al₂O₃) content in JM-23?
The alumina content in JM-23 is typically around 45%, providing a good balance of insulation and strength.
Q3. Is JM-23 suitable for direct flame exposure?
JM-23 is primarily designed as an insulating brick and is not recommended for direct flame contact. It is best used in backup insulation layers.
Q4: What are the typical applications for JM-23?
JM-23 is widely used as an insulating layer in ceramic kilns, glass furnaces, tunnel kilns, and other industrial heating equipment.
Q5: Can JM-23 be customized in size or shape?
Yes, custom sizes and shapes can be manufactured according to your project requirements.
