熔结菱镁矿砖是以氧化镁含量大于 90% 的菱镁矿为原料,以辉绿岩为主要晶相,经粉碎、碾压、成型、烧成和高温干燥而成。镁砂砖主要用于电炉、隧道窑、回转窑和玻璃窑炉,具有耐火度高、抗碱渣侵蚀性好等特点。
项目 | 熔融镁砖 | ||||
---|---|---|---|---|---|
等级 | FMB-92 | FMB-95 | FMB-96 | FMB-97 | FMB-98 |
MagO (%) | 92.5 | 95.2 | 96.1 | 96.65 | 97.2 |
氧化钙(%) | 1.8 | 1.55 | 1.35 | 1.3 | 0.98 |
二氧化硅 (%) | 3.5 | 1.95 | 1.32 | 1.1 | 1 |
0.2Mpa 负载耐火度 T0.6 ℃ | 1600 | 1700 | 1700 | 1701 | 1702 |
冷压强度(兆帕) | 80 | 85 | 85 | 84 | 86 |
体积密度 g/cm³ | 2.96 | 2.98 | 3.05 | 3.06 | 3.08 |
表观孔隙率 % | 15.5 | 15.2 | 14.7 | 14.8 | 14.6 |
1. Good slag resistance. 2. High refractoriness. Up to 2000 degrees. 3. Good thermal conductivity and hydration, but poor high temperature volume stability. 4. High load softening temperature, between 1500-1550 degrees.
Fused magnesia bricks are used in steelmaking furnaces, glass kilns, and cement rotary kilns to endure high – temperature and resist corrosion.