1540°C Refractories In Steel Making Stable Volume Mullite Insulation Brick
Mullite Insulation Brick with Low Thermal Conductivity JM23
Mullite Insulation brick
Feature
Mullite insulation bricks have high refractoriness, can directly contact the flame, and have the characteristics of light weight, high strength, low thermal conductivity, good thermal shock resistance and remarkable energy saving effect.
Characteristics of light weight Mullite bricks
1) Stable volume
2) Low thermal conductivity
3) Excellent heat insulation
4) High intensity for pressure
5) Good thermal shock stability
Application of light weight Mullite bricks
1) Glass industries iron & steel industries;
2) Ceramics industries non-ferrous metals industries;
3) Electrolytic Aluminum industries power generation industries;
4) Heat surface fireproof lining other fire-proof back lining.
| Item | Performance indicators | |||
| JM-23 | JM-26 | JM-28 | JM-30 | |
| Classification temperature(℃) | 1260 | 1430 | 1540 | 1650 |
| Bulk Density, g/cm3 | 0.6 | 0.8-1.0 | 0.9-1.1 | 1.0-1.2 |
| Cold Crushing Strength, Mpa | 1.3 | 3.0 | 3.5 | 3.5 |
|
Refiring linear change% (℃xh) |
1250×12 -0.5 |
1400×12 -0.5 |
1510×12 -0.9 |
1600×12 -0.9 |
| Thermal Conductivity, W/m.k(350±25℃) | 0.22 | 0.26 | 0.32 | 0.41 |
| AL2O3 | 50 | 60 | 65 | 70 |
| Fe2O3 | 1.2 | 1.2 | 1.0 | 1.0 |
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