Characteristics and application of magnesia carbon brick as a composite refractory material

As a kind of composite refractory material, magnesia-carbon brick effectively uses the strong slag corrosion of magnesium, effectively improves the thermal conductivity and low expansion of carbon, and makes up for the greater shortcomings of magnesium's poor spalling resistance. Magnesia carbon brick is mainly used in the lining of converter, electric arc furnace, DC electric arc furnace, ladle slag line and other parts.

Magnesia-carbon brick is made of high melting point basic oxide magnesium oxide (melting point 2800℃) and high melting point carbon material which is difficult to be penetrated by slag as raw materials, and various non-oxide additives are added. A non-burning carbon composite refractory combined with a carbonaceous binder. Magnesia carbon brick is mainly used in the lining of converter, AC electric arc furnace, DC electric arc furnace, ladle slag line and other parts.

As a kind of composite refractory material, magnesia carbon brick effectively utilizes the strong slag resistance of magnesia and the high thermal conductivity and low expansion of carbon to compensate for the greater shortcomings of poor spalling resistance of magnesia.

Its main characteristics are: good high temperature resistance, strong slag resistance, good thermal shock resistance, low high temperature creep.