Magnesia bricks
Product properties
The main crystal phase of magnesia brick is quadrate magnesite, which has typical characteristics of general alkaline refractory products. Magnesia brick has high refractoriness, good alkali slag resistance, high initial temperature of load softening, but poor thermal shock resistance. The firing temperature is above 1750℃.
Product purpose：
It is mainly used for lattice brick of heat storage chamber in glass furnace.
| Physical and chemical index of Magnesia bricks | ||||
| Properties | Products | |||
| High Purity Magnesia | 97 Magnesia | 95 Magnesia | ||
| Chemical composition(%) | MgO | 98.5 | 97.4 | 95.0 |
| SiO2 | 0.2 | 1.0 | 1.2 | |
| Fe2O3 | 0.1 | 0.5 | 0.9 | |
| Al2O3 | 0.1 | 0.2 | ||
| CaO | 0.6 | 1.0 | 2.1 | |
| Physical properties | Volum density（g/cm3） | 2.92 | 3.00 | 2.95 |
| Apparent porosity（%） | 16 | 16 | 18 | |
| Cold crushing strength（Mpa) | 80 | 80 | 100 | |
| Refratoriness under load T2 (T0.6,℃) | 1720 | 1700 | 1680 | |
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