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+86 189 3070 0197
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+86 189 3070 0197
High aluminum refractory bricks with then characteristics of high refractoriness, high load softening temperature, good seismic stability, anti-acid,anti- alkali, anti-erosion and so on.
| Item
Grade |
Index | |||
| GL-75 | GL-65 | GL-55 | GL-48 | |
| Al2O3 %≥ | 75 | 65 | 55 | 48 |
| Degree of fire resistance ℃ ＞ | 1790 | 1790 | 1770 | 1750 |
| Softening temp. under 0.2Mpa load ℃ | 1520 | 1500 | 1470 | 1420 |
| Linear change on reheating | 1500℃ ，2h % | +0.1
-0.4 |
||
| 1450℃ ，2h % | +0.1
-0.4 |
|||
| Apparent porosity % ≤ | 23 | 22 | ||
| Cold compressive strength Mpa ≥ | 53.9 | 49 | 44.1 | 39.2 |