Magnesia zirconia brick is composed of high-quality fused magnesia sand and zircon sand and it belongs to alkaline material. This product has high density (Bulk density) is greater than 3.08g/cm3).It also resists alkaline atmosphere erosion and alkaline slag erosion and widely used in glass furnace, regenerative chamber, cement kiln, steel-making electric furnace and non-ferrous metal metallurgy.
| Item | Magnesia zircon brick | ||||
|---|---|---|---|---|---|
| Grade | MZ-8 | MZ-10 | MZ-12 | MZ-13 | |
| MagO (%) ≥ | 80 | 75 | 75 | 70 | |
| ZrO2 (%) ≥ | 8 | 10 | 12 | 13 | |
| 0.2Mpa Refractoriness Under Load T0.6 ℃ | 1600 | 1550 | 1550 | 1600 | |
| Cold Crushing Strength (Mpa) | 50 | 45 | 45 | 40 | |
| Bulk Density g/cm³ | 2.95 | 3 | 3.05 | 3.05 | |
| Apparent Porosity % | 19 | 18 | 18 | 18 | |
| Pernanent Linear Change On Reheating % 15000 ℃X2h | 0~+0.4 | 0~+0.4 | 0~+0.4 | 0~+0.4 | |
| Thermal Shock Resistance 100℃ water cycles ≥ | 10 | 10 | 10 | 10 | |
1. High refractoriness; 2. Good slag resistance; 3. Good thermal shock stability; 4. High mechanical strength;
Magnesia zirconia bricks are applied in steel – making converters, glass – melting furnaces and cement kilns, withstanding high – temperature and corrosive substances.