Magnesite bricks are made of sintered magnesia, high purity magnesia and fused magnesia as raw materials, and magnesite is the main crystalline phase in the product. Its advantages are high refractoriness, high strength at high temperature, stable volume at high temperature and good resistance to alkaline slag，but thermal shock stability is poor. Mainly used in the permanent lining of steel furnace, lime kiln, glass kiln regenerator, ferroalloy furnace, mixed iron furnace, non-ferrous metal furnace and the lining of other steel, non-ferrous metallurgy furnace and building materials industry kiln.
| INDEX PRODUCT | MG-92 | MG-95A | MG-95B | MG-97A | MG-97B | MG-98 |
| Bulk Density(g/cm3) ≥ | 2.90 | 2.95 | 2.95 | 3.00 | 3.00 | 3.00 |
| Apparent Porosity(%) ≤ | 18 | 17 | 18 | 17 | 17 | 17 |
| Cold Crushing Strength(MPa) ≥ | 60 | 60 | 60 | 60 | 60 | 60 |
| @0.2MPaRefractoriness Under Load(℃) ≥ | 1580 | 1650 | 1620 | 1700 | 1680 | 1700 |
| MgO(%) ≥ | 92 | 95 | 94.5 | 97 | 96.5 | 97.5 |
| SiO2(%) ≤ | 4.0 | 2.0 | 2.5 | 1.2 | 1.5 | 0.6 |
| CaO(%) ≤ | 2.5 | 2.0 | 2.0 | 1.5 | 2.0 | 1.0 |