Dead Burnt Magnesia （DBM）
Dead-burned magnesia is an alkaline refractory material, mainly made from natural high-grade magnesite ore through flotation purification, light burning, fine grinding, high-pressure balling, and sintering in ultra-high-temperature oil-fired vertical kiln. This product, also known as sintered magnesia or dead-burned magnesia, which has high refractoriness. Its main component is magnesium oxide.
Application：
Used to produce shaped and unshaped magnesia refractory products. The finished products are used in steelmaking, electric furnace bottoms, and ramming furnace linings.
Item | MS-85 | MS-88 | MS-90 | MS-91 | MS-92 |
MgO,% | ≥85 | ≥88 | ≥90 | ≥91 | ≥92 |
SiO2,% | ≤6.0 | ≤4.0 | ≤4.0 | ≤3.5 | ≤3.0 |
CaO,% | ≤5.0 | ≤4.0 | ≤2.5 | ≤2.0 | ≤1.8 |
LOI,% | ≤0.8 | ≤0.5 | ≤0.3 | ≤0.3 | ≤0.3 |
B.D,g/cm3 | ≥3.10 | ≥3.15 | ≥3.15 | ≥3.18 | ≥3.18 |
Size,mm | 0~150 | 0~150 | 0~60 | 0~30 | 0~30 |