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Magnesite chrome bricks in magnesium oxide (MgO style) and chromium trioxide (Cr2O3) as main component, and periclase spinel as main mineral components of refractory products Such bricks of high refractoriness, high temperature strength, strong alkaline slag erosion resistance, good thermal stability and adaptability to acid slag also to have certain manufacturing magnesite chrome brick of the main raw material is sintered magnesia chromite magnesia and the purity of raw materials to be as high as possible, chromite chemical composition requirement is: the Cr2O3:30 ~ 45%, CaO: 1.0 ~ 1.5% magnesite-chrome brick is mainly used in metallurgical industry, such as the construction of open hearth furnace roof top outside the furnace refining furnace and various non-ferrous metal smelting furnace Ultra high power electric furnace wall of the high temperature parts adopt fused magnesite chrome brick, refining furnace high erosion area outside the furnace use synthetic materials made from magnesite chrome brick, high flash smelting furnace of non-ferrous metal erosion area in synthetic material made of fused magnesite chrome brick magnesite chrome brick In addition, magnesia-chrome brick used in cement rotary kiln burning zone and regenerator of glass kilns etc.