Magnesia brick
1.Magnesia Chrome brick
We supply magnesia chrome brick for copper furnace and also can help customers to build or improve their furnace, we have more than 20 year experience for magnesia brick and copper furnace industry and sucessed in improving the working life of many cases of our customers.
| No. | Items | Typical value | Test method | |
| 1 | Chemical composition (%) | MgO | 55-80% | GB/T 5069 |
| 2 | Cr2O2 | 4-20% | ||
| 3 | SiO2 | ≤2.5 | ||
| 4 | Al2O3 | ≤2.0 | ||
| 5 | Fe2o2 | ≤8.0 | ||
| 6 | CaO | ≤2.0 | ||
| 7 | Physical Properties | Cold Crushing Strength (Mpa) | 35-40 | GB/T 5072 |
| 8 | Apparent Porosity (%) | 17-18 | GB/T 2997 | |
| 9 | Bulk Density (g/cm3) | 3.0-4.0 | ||
| 10 | Refractoriness Under Load (℃) | 1600-1750 | YB/T 370 | |
2.Magnesia granule
| No. | Chemical composition (%) | Typical value | Test method | |
| 1 | Magnesia granule (1-3 Mesh) | MgO | ≥89 | GB/T 5069 |
| 2 | Magnesia Powder (200 Mesh) | ≥80 | ||
3.Magnesia brick
| No. | Items | Typical value | Test method | |
| 1 | Chemical composition (%) | MgO | 91-98 | GB/T 5069 |
| 2 | CaO | ≤3.0 | ||
| 3 | SiO2 | ≤2.5 | ||
| 4 | Physical Properties | Cold Crushing Strength (Mpa) | 55-60 | GB/T 5072 |
| 5 | Apparent Porosity (%) | 16-18 | GB/T 2997 | |
| 6 | Refractoriness Under Load (℃) | 1520-1700 | YB/T 370 | |