Magnesia Calcium Bricks

Magnesia bricks are basic refractory materials with strong resistance to alkaline slag. They feature high refractoriness and high refractoriness under load, and are primarily used in steel metallurgical furnaces, glass melting furnace regenerators, etc.

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Physical and Chemical Indicators

Item	MG20	MG30	MG40	MG50
CaO (%)	≥ 18	≥ 28	≥ 38	≥ 48
MgO + CaO (%)	≥ 94
SiO₂ + Al₂O₃ + Fe₂O₃ (%)	≤ 2.5
Apparent Porosity (%)	≤ 15
Bulk Density (g/cm³)	≥ 2.95		≥ 2.9
Cold Crushing Strength (MPa)	≥ 60
Refractoriness Under Load (0.2MPa, ℃)	≥ 1700

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