矽镁土耐火砖由矽镁土、石英和其他矿物通过煅烧或浇铸制成。其氧化铝含量高达 62%。它们是一种特殊的高铝耐火砖。它们的物理和化学性质优于高铝耐火砖。因此,它们是建造工业窑炉和其他高温设备的重要耐火材料。
项目 | GXS-65 | GXS-60 | |
---|---|---|---|
Al2O3, % | ≥ | 65 | 60 |
SiO2, % | ≤ | 32 | 37 |
铁2O3, % | ≤ | 0.5 | 1 |
体积密度,克/厘米3 | ≥ | 2.5 | 2.3 |
表观孔隙率,% | ≤ | 18 | 19 |
冷压强度,兆帕 | ≥ | 80 | 80 |
0.2MPa 负载下的折射率,℃ | ≥ | 1650 | 1600 |
1.High refractoriness, enduring over 1650°C – 1750°C.
2.Good thermal shock resistance, resisting cracking from temp changes.
3.Low thermal conductivity, cutting heat loss.
4.High chemical stability against corrosion.
5.High mechanical strength for long – term use.
Sillimanite bricks are applied in glass kilns, ceramic kilns, and steel – making furnaces. They withstand high – temperature and chemical – corrosion environments, ensuring equipment durability.