它用于高炉、转炉、电炉和钢包等冶金设备的内衬和炉顶。
镁铁尖晶石耐火砖是以高纯度氧化镁和铝铁尖晶石为原料制成的。在镁铁尖晶石砖的使用过程中,砖的热表面会形成一层高粘性的钙铁和钙铝化合物,易于挂窑。该产品具有抗压强度高、抗热震性好的特点。该特性可有效解决水泥窑使用镁铬砖过程中产生六价铬对环境造成污染的问题。镁铁尖晶石砖因其优异的热稳定性而备受推崇。其抗侵蚀性优于优质镁铬砖。
项目/等级 | MFe-85A | MFe-85B |
---|---|---|
ω(氧化镁) ≥/% | 85 | 85 |
ω(Al2O3)/% | 3-5 | 3-5 |
ω(铁2O3)/% | 4-6 | 4-6 |
体积密度 ≥ (g/cm³) | 2.95 | 2.90 |
冷压强度 ≥ (MPa) | 55 | 50 |
耐火度 欠载 ≥ (T0.6℃) | 1650 | 1600 |
抗热震性 ≥(950℃ 空气淬火,循环) | 100 | 90 |
导热系数 ≤ (1000℃) [W/(m-K)] | 2.6 | 2.6 |
热膨胀系数 (1400℃)/% | 1.6 | 1.6 |
1.Anti-Corrosion And Anti-Stripping
2.Good Thermal Shock Stability
3.Lower Thermal Conductivity
4.Good Electrical Insulation Properties
Magnesia Iron spinel bricks are extensively used in the steel industry. They line the linings of converters, protecting against molten steel and slag corrosion. In electric arc furnaces, they endure arc impacts and temperature fluctuations. Also, they’re applied in ladles, safeguarding against steel – water erosion for stable operations.