JM-28 Insulation Refractory Fire Brick Stable Volume Heat Resistant Bricks
Description of light weight insulation refractory bricks
This series of products are made from high purity materials by unique technics, so they have a lot of advantages such as stable volume, excellent thermal stability, high intensity, and low thermal conductivity. They are an ideal kind of energy-conserving products, which can be widely used as linings or as thermal preservations layes in various industrial furnaces and kilns in metallurgical industry, ceramic industry, chemical industry and machinery industry.
Characteristics of light weight insulation refractory 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 insulation refractory 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.
Properties of light weight insulation refractory bricks
| Item | JM-23 | JM -26 | JM -28 | JM -30 | JM -32 | |
| Classification temperature (oC) | 1260 | 1430 | 1540 | 1650 | 1760 | |
| Bulk density (g/cm3) | 0.8-1 | 0.8-1 | 0.8-1 | 0.8-1 | 0.8-1 | |
| Crushing strength (Mpa) | 3.5-4 | 3.5-4 | 3.5-4 | 3.5-4 | 3.5-4 | |
| Modulus of rupture (Mpa) | 0.9 | 1.4 | 1.6 | 2.1 | 2.1 | |
| Permanent linear change (CT-30oCX24h)% | 0.5 | 0.4 | 0.5 | 0.9 | 0.9 | |
| Reversible thermal expansion at 1100 | 0.5 | 0.7 | 0.8 | 0.9 | 1.1 | |
| Thermal conductivity (W/m.k) | 400oC | 0.14 | 0.27 | 0.32 | 0.41 | 0.49 |
| 600oC | 0.16 | 0.29 | 0.34 | 0.43 | 0.5 | |
| 800oC | 0.18 | 0.31 | 0.36 | 0.44 | 0.51 | |
| 1000oC | 0.2 | 0.33 | 0.38 | 0.45 | 0.53 | |
| 1200oC | - | 0.35 | 0.41 | 0.47 | 0.56 | |
| Chemical Analysis (%) | Al2O3 | 37 | 58 | 67 | 73 | 77 |
| Fe2O3 | 0.7 | 0.7 | 0.6 | 0.5 | 0.4 | |
| standard size | 230x114x75/65mm | |||||
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