Main properties and uses of magnesia carbon brick

Magnesia-carbon bricks are made of magnesia, re-burned magnesia, fused magnesia, high-purity magnesia, and high-quality graphite and bauxite additives. The price and performance of magnesia-carbon brick have a great relationship with the graphite content in the brick. As the graphite content increases, the strength of the brick decreases, the thermal expansion rate decreases, and the residual expansion rate increases. Light burnt magnesia powder

Therefore, the graphite content in the bricks should be controlled at about 20%. Magnesia carbon bricks have little wettability to molten slag, have excellent spalling resistance and corrosion resistance, and are suitable for the slag line of the ladle, especially in the occasion of multiple furnace continuous casting. In order to meet the needs of producing clean steel, when refining in the ladle, the application part of the magnesia carbon brick has been expanded from the slag line to the side wall.

When laying magnesia-carbon bricks on the ladle, care should be taken not to mix with bricks with high Si02 content. Otherwise, the local melting loss of the magnesia carbon brick will be increased, and the melting loss mechanism is:

Mainly used for lining and tapping of steel-making oxidation reformer, hot spots of high-power electric furnace wall, lining of refining furnace outside the furnace, and slag line of ladle, etc.