What is the difference between magnesia-carbon brick and aluminum-magnesium-carbon brick? The difference between magnesia-carbon brick and aluminum-magnesium-carbon brick is that the raw materials used are different. Made of sand and graphite. Magnesia carbon brick manufacturers can also add antioxidants if necessary. Magnesia carbon bricks perform well in terms of heat resistance, corrosion resistance, corrosion resistance and spalling resistance. Magnesia-carbon bricks are mainly used for linings of converters, electric arc furnaces, DC electric arc furnaces, and ladle slag lines. Converter magnesia carbon brick
Magnesia-aluminum carbon bricks are made of high-quality bauxite, corundum, fused magnesia and graphite. Aluminum-magnesium-carbon bricks have proper residual expansion, low thermal conductivity and better edge performance. The aluminum-magnesium-carbon bricks are used in the slag line of the ladle, the lower part of the ladle wall, the bottom of the ladle and the free zone of the ladle. The magnesium oxide contained in the magnesia carbon brick is determined by what material is used. The common magnesia carbon bricks are mainly 72% magnesia, 74% magnesia, 76% magnesia, 80% magnesia, 82% magnesia, 85 % Magnesium oxide, magnesia carbon brick manufacturers, the main raw materials used in the production of magnesia carbon bricks are fused magnesia, graphite, metal aluminum powder, metal silicon powder, liquid phenolic resin, which is stirred by a sand mixer and pressed by a press. Carbon bricks are used in refining ladle slag lines, and magnesia-carbon bricks are also used in lining parts such as AC electric arc furnaces, DC electric arc furnaces, and converters.
Ladle 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 bricks have a lot to do with the graphite content in the bricks. As the graphite content increases, the strength of the brick decreases, the thermal expansion rate decreases, and the residual expansion rate increases.
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, it will increase the local melting loss of the magnesia carbon brick, 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.
