High quality chrome bricks sold by Zhengzhou Sunrise refractory

Magnesia-chrome bricks are refractory products containing magnesium oxide (MgO) and chromium oxide (Cr2O3) as the main components, and periclase and spinel are the main mineral components. This type of brick has high refractoriness, high temperature strength, strong resistance to alkaline slag, excellent thermal stability, and certain adaptability to acidic slag. The main raw materials for the manufacture of magnesia chrome bricks are sintered magnesia and chromite. The purity of the magnesia raw material should be as high as possible. The requirements for the chemical composition of the chromite ore are: Cr2O3: 30-45%, CaO: ≤ 1.0-1.5%.

 

The direct combination of magnesia chrome bricks is made of high-purity or sub-high-purity sintered or fused magnesia and chrome concentrate. The product has few impurities, is fired at high temperature or ultra-high temperature, and the glass phase is concentrated in the triangular region of the crystal phase. The crystal phase and the crystal phase are directly combined, and the porosity is low, the compressive strength is high, the wear resistance is strong, and the corrosion resistance is The thermal shock performance is good and does not peel off. Suitable for large dry cement rotary kiln firing zone.

Magnesia-chrome bricks are mainly used in metallurgical industries, such as the construction of open hearth furnace roofs, electric furnace tops, furnace refining furnaces, and various non-ferrous metal smelting furnaces. The high-temperature part of the ultra-high-power electric furnace wall is cast-cast magnesia-chrome brick, and the high-erosion area of ​​the refining furnace outside the furnace is made of magnesia-chrome brick made of synthetic material. The high-erosion area of ​​the non-ferrous metal flash smelting furnace is made of molten-magnesium-chromium brick composite material. Magnesia chrome brick. In addition, magnesia chrome bricks are also used in cement rotary kiln firing zones and glass kiln regenerators.