Alumina magnesia carbon brick magnesia carbon brick

Alumina magnesia carbon bricks refer to refractory products made of super high alumina bauxite or corundum sand, magnesia and flake graphite as the main raw materials. Fused aluminum chrome sand aluminum magnesia carbon brick is a fire-lined product made of super high alumina bauxite or corundum sand, magnesia sand and flake graphite as the main raw materials. It is characterized in that in addition to the advantages of high corrosion resistance and not easy to peel due to carbon content at high temperature, it also has the advantage of showing high residual linear expansion rate due to the formation of spinel when heated during use, so it has become a newly developed high-quality product. Lining bricks.

 The characteristics of alumina-magnesia-carbon bricks are that in addition to the advantages of high corrosion resistance and not easy peeling due to carbon content at high temperatures, they also have the advantages of high residual linear expansion rate due to the formation of spinel when heated during use. Newly developed high quality lining bricks. Contains Al2O3 60%~69%, MgO 7%~14%, C 5%~12%. It has good slag corrosion resistance and thermal shock resistance, and has a small amount of reburning expansion.

Fused aluminum chrome sand

 Fused Aluminum Chromium Zirconium

 Aluminum-magnesium-carbon bricks have the advantages of corrosion resistance, peeling resistance, balanced corrosion, safe use, less steel and slag, and easy unpacking. It is mainly used for the inner lining of the steel poke under harsh conditions. In the continuous casting large-scale tundish and out-of-furnace refining ladle, the molten pool part and the ladle bottom part are lined with aluminum magnesia carbon bricks more and more.

 In order to improve its oxidation resistance, additives such as Si powder, Al powder, SiC powder or ferrosilicon powder can be appropriately added to the ingredients, and resin is used as a binder for high pressure molding. Calcined. Mainly used for ladle lining of large converters and ultra-high power electric furnaces and refining furnace linings outside the furnace.

 Special high alumina bauxite is used as raw material, because it contains a certain proportion of SiO2 and other impurities, and the structure is not dense, and the resistance to slag corrosion is poor. earth. In order to improve the oxidation resistance and high temperature strength of the product, the measure of adding a small amount of metal powder is adopted, but the thermal shock resistance is reduced, so the content of flake graphite is increased.