Al2O3: 42-45%
Bulk Density: 0.5-1.0g/cm3
High porosity
Small volume density
High mechanical intensity
Small thermal conductivity
JM23 Mullite Insulation Brick
Description
JM23 mullite insulation brick is made of high-purity mullite as raw material, adding alumina powder according to different varieties, and sintering at high temperature.
Characteristics
- High temperature structural strength.
- Low creep rate at high temperature.
- Small coefficient of thermal expansion.
- Strong chemical resistance.
- Good thermal shock resistance.
- Furnace face linings suitable for direct contact with flames.
Specification
| JM23 Mullite Insulation Brick | A | B | C | D | E |
|---|---|---|---|---|---|
| Volume density (g/cm3) | 0.5 | 0.55 | 0.6 | 0.8 | 1 |
| Reheating Linear Change 1300℃*12h, % | -1 | -0.6 | -0.5 | -0.4 | -0.2 |
| Cold Compression Strength (Mpa) | 1.2 | 1.3 | 1.6 | 2.2 | 2.8 |
| Bending Strength At Normal Temperature (Mpa) | 0.9 | 1 | 1.1 | 1.3 | 1.7 |
| Thermal Conductivity 350℃w/m·k | 0.16 | 0.17 | 0.19 | 0.24 | 0.31 |
| Al2O3 (%) | 42 | 42 | 44 | 45 | 45 |
| SiO2 (%) | 54 | 54 | 52 | 51 | 51 |
| Fe2O3 (%) | 0.8 | 0.8 | 0.8 | 0.9 | 0.9 |
Application
JM23 mullite insulation bricks are widely used in thermal insulation of various industrial kilns. Such as electric furnace, metallurgical furnace, petroleum cracking furnace, metallurgical hot blast furnace, ceramic roller kiln, tunnel kiln, electric porcelain shuttle kiln, glass industrial pot furnace, various electric furnace linings and high-temperature equipment.
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