| 项目Item | 镁砖 Magnesia Brick |
中档镁砖 Middle Grade Magnesia Brick |
高纯镁砖 High Purity Magnesia Brick |
电熔镁砖 Electric Fused Magnesia Brick |
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| MZ-89 | MZ-91 | MZ-95 | MZ-96 | MZ-97 | MZ-98 | DMZ-98 | |
| MgO(%)≥ | 89 | 91 | 94.5 | 95.5 | 96.5 | 97.5 | 97.5 |
| CaO(%)≤ | 3 | 3 | 2.5 | 2 | 1.5 | 1.0 | 1.0 |
| 显气孔率(%)≤ Apparent porosity |
20 | 18 | 18 | 18 | 18 | 18 | 18 |
| 常温耐压强度(Mpa) ≥ Cold crushing strength |
49 | 58.8 | 60 | 60 | 60 | 60 | 40 |
| 0.2 Mpa荷重软化开始点℃≥ | 1540 | 1550 | 1620 | 1650 | 1680 | 1700 | 1700 |
| 0.2 Mpa refractoriness under load | |||||||
| 重烧线变化(%) Permanent linear change on reheating |
-0.6 | -0.5 | |||||
