Remelted rebound magnesium-chromium brick
Apparent porosity : 16~17
Cold crushing strength : 35~40Mpa
PRODUCT DESCRIPTION
Introduction
Fused rebonded magnesia-chrome brick is manufactured with fully fused magnesia-chrome clinker. Through ultra-high temperature firing and heavy-pressure forming, it forms a complete direct-bonded crystal structure with extremely low porosity and super dense texture.
Features
- Ultra-strong slag & alkali corrosion resistance: Fully fused crystal structure effectively blocks slag penetration, showing excellent resistance to alkaline molten slag and high-temperature flue gas erosion.
- Super high density & ultra-low porosity: Dense internal structure minimizes pore channels, greatly improving anti-infiltration and anti-scouring performance.
- Excellent high-temperature stability: Extremely low high-temperature creep and ultra-high load softening temperature, no deformation or structural damage under long-term extreme high temperature and load.
- Reliable thermal shock resistance: Optimized fused grain grading balances strength and toughness, effectively avoiding cracking and spalling during frequent cold and hot alternation.
Application Areas
Mainly applied for core parts of high-temperature industrial furnaces with extreme slag corrosion and super long service life requirements.
Key lining of AOD, VOD, LF refining furnaces and severe erosion zones.
TECHNIQUE DATA
| Index | DMGe-12A | DMGe-12B | DMGe-16A | DMGe-16B | DMGe-18 | DMGe-20 | DMGe-14 | |
| MgO, % | ≥ | 60 | 60 | 55 | 55 | 55 | 46 | 60 |
| Cr₂O₃, % | ≥ | 12 | 12 | 16 | 16 | 18 | 20 | 14 |
| SiO₂, % | ≤ | 2.5 | 3.5 | 2.5 | 3.5 | 2.5 | 2.5 | 2.5 |
| Apparent porosity % | ≤ | 16 | 16 | 16 | 16 | 17 | 16 | 16 |
| 0.2MPa refractoriness under load0.2MPa ℃ | ≥ | 1700 | 1700 | 1700 | 1700 | 1700 | 1700 | 1700 |
| Cold crushing strength MPa | ≥ | 35 | 35 | 35 | 35 | 35 | 35 | 40 |
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