1. High Refractoriness: Withstands temperatures up to 2800°C.
2. Chemical Stability: Resistant to acid and alkali corrosion.
3. High Strength: Endures high pressure and temperature.
4. Excellent Thermal Conductivity: Improves heat efficiency.
5. Low Expansion: Reduces equipment wear and tear.
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85%-92% Dead burned magnesia is mainly made of natural magnesite ore with 46% content, which is calcined by high temperature kiln at about 1400℃-1800℃.
94%-98% Dead burned magnesia is made of natural super-grade magnesite ore. It is made by light burning, fine grinding, pressing balls and calcining in ultra-high temperature oil shaft kiln.
| Item | Unit |
BM90 |
BM92 |
BM95 |
BM97 |
| Mg0 |
% | 90 |
92 |
95 |
97 |
| SiO₂ | % | 5.0 |
4.8 |
2.0 |
0.7 |
| CaO |
% | 2.5 |
2.0 |
1.4 |
1.4 |
| Fe₂O₃ | % | 1.5 |
1.5 |
1.0 |
0.75 |
| Al₂O₃ | % | 1.5 |
1.2 |
0.3 |
0.2 |
| L.0.I |
% | 0.50 |
0.50 |
0.15 |
0.13 |
| Bulk Density | g/cm³ | 3.10 |
3.14 |
3.18 |
3.28 |
| Grain Size |
0-1mm, 0.5-1mm, 1-3mm, 1-5mm, 3-5mm, 200mesh, 1-15mm, 3-15mm, 5-15mm, 3-8mm, 5-10mm |
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Burned magnesia is mainly used as raw material for making magnesia bricks and producing amorphous refractory materials. The finished products are used in steel making, electric furnace bottom and ramming furnace.
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