Magnesia brick’s main composition is magnesia and the content of magnesia is normally more than 90% and the main crystal is periclase. Magnesia bricks are generally divided into sintered magnesia brick and chemical combination magnesia refractory brick. For the sintered magnesia brick, direct contact type is called direct combination of magnesia brick, electric fused type is called reunited fused magnesia brick.
Application of Kerui Magnesia Brick:
- Steel melting furnace lining, the ferroalloy fiber cable furnace in steel industry.
- Non-ferrous metallurgical industry furnace (such as copper, lead, zinc, tin).
- Building industry kiln, glass kiln, cement kiln, calcination kiln, shaft kiln, tunnel kiln, etc.
Specification of Kerui Magnesia Brick:
| Item | KR-MZ-91 | KR-MZ-92 | KR-MZ-93 | KR-MZ-94 | KR-MZ-97 |
| MgO, % ≥ | 91 | 92 | 93 | 94.5 | 97 |
| SiO2, % ≤ | 4 | 3.5 | 2.5 | 2 | 2 |
| Fe2O3, % ≤ | 1.3 | – | – | 1.2 | 1.2 |
| CaO, % ≤ | 2.5 | 2.5 | 2 | 1.8 | 1.8 |
| Apparent Porosity, ％ ≤ | 18 | 18 | 18 | 18 | 18 |
| Bulk Density, g/cm3 ≥ | 2.86 | 2.9 | 2.95 | 2.92 | 2.95 |
| Cold Crushing Strength Mpa, ≥ | 60 | 60 | 60 | 60 | 60 |
| 0.2Mpa Refractoriness Under Load T0.6 ℃ | ≥1570 | ≥1560 | ≥1620 | ≥1650 | ≥1700 |
Shape & Size of Kerui Magnesia Brick
| Straight | Split | Arch | Wedge | Tile | Other Shape |
| L×W×H(mm) | L×W×H (mm) | L×W×H/h(mm) | L×W×H/h (mm) | L×W×H (mm) | Key brick |
| 230×114×65 | 230×114×25 | 230×114×65/45 | 230×114×65/45 | 230×230×38 | Skew brick |
| 230×114×75 | 230×114×32 | 230×114×65/55 | 230×114×65/55 | 230×230×50 | Soap |
| 230×114×37 | 230×114×75/45 | 220×114×75/45 | 230×230×65 | Checker | |
| 230×114×50 | 230×114×75/55 | 220×114×75/55 | 230×230×75 | Neck | |
| 230×114×75/65 | 220×114×75/65 | Taper |
