Product detail
Mullite Insulation Brick
Mullite insulation brick is a high-alumina refractory brick with mullite as the main crystal phase. It has uniform thermal expansion, heat insulation, high temperature resistance, and good chemical corrosion resistance. It is used in hot blast furnaces, metal melting furnaces, forging furnaces, etc.
Product Parameters
| Item 项目 |
Mullite insulation Brick 莫来石隔热耐火砖 |
|||||||
| IFB23 | IFB26 | IFB25 | IFB28 | IFB30 | IFB32 | |||
| Classification Temperature 分类温度 |
℃ | 1260 | 1400 | 1380 | 1500 | 1550 | 1600 | |
| Al2O3 % | ≥ | 40 | 52 | 48 | 65 | 68 | 75 | |
| Fe2O3 % | ≤ | 1.0 | 0.8 | 1.0 | 0.7 | 0.7 | 0.6 | |
| Bulk Density 体积密度(g/cm3) |
≤ | 0.60 | 0.80 | 0.80 | 0.90 | 1.00 | 1.20 | |
| Cold Crushing Strength 常温耐压强度(Mpa) |
≥ | 1.2 | 1.8 | 2.5 | 2.5 | 3.0 | 3.2 | |
| Modulus of Rupture 抗折强度（Mpa) |
≥ | 1.0 | 1.7 | 1.4 | 2.3 | 1.8 | 1.9 | |
| Reheating Linear Change Rate 加热永久线变化 % |
T/℃×8h | 1230 | 1400 | 1350 | 1510 | 1550 | 1600 | |
| -0.6 | -0.6 | -0.5 | -0.8 | -0.5 | -0.5 | |||
| Thermal conductivity 导热系数W(m.k) |
200±25℃ | ≤ | 0.16 | – | 0.20 | – | – | – |
| 350±25℃ | 0.20 | 0.29 | 0.21 | 0.35 | 0.40 | 0.49 | ||
| 600±25℃ | 0.24 | 0.32 | 0.23 | 0.37 | 0.42 | 0.50 | ||
| 800±25℃ | 0.28 | 0.28 | 0.27 | 0.35 | 0.43 | 0.51 | ||
| 1000±25℃ | 0.33 | 0.33 | 0.32 | 0.38 | 0.44 | 0.53 | ||
| 1200±25℃ | – | 0.36 | – | 0.41 | 0.47 | 0.54 | ||
| Refractoriness under Load 0.05Mpa荷重软化开始温度℃ |
≥ | 1080 | 1200 | 1250 | 1300 | 1360 | 1470 | |
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