Magnesia Brick
Production process: the product is sintered magnesia and fused magnesia as raw materials, after high pressure molding, drying and high temperature firing.
Product performance: less impurity content, good slag resistance, strong erosion resistance, high softening temperature under load.
Main USES: open hearth furnace, converter, arc furnace, non - ferrous furnace and glass kiln.
| Item | MZ-90 | MZ-91 | MZ-92 | MZ-95B | MZ-95A | MZ-97B | MZ-97A | DMZ-95B | DMZ-95A | DMZ-97B | DMZ-97A |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MgO（%） | 90.0 | 91.0 | 92.0 | 94.5 | 95.0 | 96.5 | 97.0 | 94.5 | 95 | 96.5 | 97 |
| Al2O3（%） | - | - | - | - | - | - | - | - | - | - | - |
| SiO2（%）≤ | 4.5 | 4.5 | 4.0 | 2.5 | 2.0 | 1.5 | 1.2 | 2.5 | 2.0 | 1.2 | 1.0 |
| CaO（%）≤ | 3.0 | 3.0 | 2.5 | 2.0 | 2.0 | 1.5 | 1.5 | 2.0 | 2.0 | - | - |
| Fe2O3（%）≤ | - | - | - | - | - | - | - | - | - | - | - |
| Apparent porosity（%）≤ | 20 | 19 | 19 | 18 | 18 | 17 | 17 | 18 | 18 | 17 | 17 |
| B.D.（g/cm³）≥ | 2.85 | 2.90 | 2.90 | 2.92 | 2.94 | 2.95 | 2.96 | 2.95 | 2.95 | 2.98 | 3.00 |
| Withstand pressure at normal temperature（Mpa）≥ | 50 | 55 | 60 | 70 | 70 | 80 | 80 | 70 | 70 | 80 | 80 |
| Softening temperature under load（℃）≥ | 1550 | 1560 | 1560 | 1600 | 1650 | 1700 | 1700 | 1630 | 1650 | 1680 | 1700 |
