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Dead burnt magnesite is a chemical substance that refers to the complete escape of carbon dioxide from magnesite calcined at 1800 ℃, resulting in the formation of dense magnesium oxide rocks.
This type of calcined magnesium has high refractoriness. Made from natural magnesium ore as raw material, it is purified by flotation, lightly burned, refined, high-pressure ball pressing, and calcined in ultra-high temperature oil shaft kiln.
Grade | Physicochemical indicators | Size （mm） | ||||||
MgO%≥ | SiO₂%≤ | CaO%≤ | Fe₂O₃%≤ | Al₂O₃%≤ | L.O.I%≤ | B.D.(g/cm³) | ||
DBM-90 | 90 | 5 | 2.5 | 1 | 0.5 | 0.3 | 3.17 | 10-40 |
DBM-91 | 91 | 5 | 2.0 | 0.8 | 0.5 | 0.3 | 3.18 | 10-40 |
DBM-92 | 92 | 4.6 | 2.0 | 0.8 | 0.5 | 0.3 | 3.18 | 10-40 |
