Introduction of magnesia chrome brick
Magnesia-chrome brick is a refractory product with MgO and Cr2O3 as the main components, and periclase and spinel as the main mineral components. The main raw materials for making magnesia-chrome bricks are sintered magnesia and chromite. The purity of magnesia raw materials should be as high as possible. The chemical composition requirements of chromite are: Cr2O3: 30~45%, CaO: ≤1.0~1.5%. Zhengzhou Zhenjin Refractory Co., Ltd. is a manufacturing enterprise integrating R&D, production, sales and technical services. We are committed to the supply, construction, installation and other services of refractory products in the cement, glass, building materials, non-ferrous smelting and metallurgical industries.
Parameter of magnesia chrome brick
Model | Mge-8 | Mge-10 | Mge-12 | Mge-16 | Mge-18 |
MgO(%) ≥ | 60 | 65 | 60 | 50 | 45 |
SiO2(%) ≤ | ----- | ----- | ---- | ---- | ---- |
Cr2O3(%) ≥ | 8 | 10 | 12 | 16 | 18 |
Apparent porosity(%) ≤ | 22 | 22 | 20 | 18 | 18 |
Bulk density (g/cm³) | 2.95 | 3.00 | 3.05 | 3.1 | 3.1 |
Compressive strength(Mpa) ≥ | 35 | 35 | 35 | 35 | 35 |
Degree of softening under load °C (0.2Mpa) | 1550 | 1580 | 1600 | 1650 | 1650 |
Thermal shock stability(1100℃,times) ≥ | 4 | 4 | 4 | 4 | 4 |
Application of magnesia chrome bricks
Magnesia-chrome bricks are mainly used in the cement industry and metallurgical industry, such as building open hearth furnace tops, electric furnace tops, out-of-furnace refining furnaces and various non-ferrous metal smelting furnaces. Cast magnesia-chrome bricks are widely used in the high-temperature parts of the furnace wall of high-power electric furnaces, magnesia-chrome bricks made of synthetic materials are widely used in the high-erosion areas of the refining furnaces outside the furnace, and magnesia-chrome bricks made of synthetic materials are widely used in the high-erosion areas of non-ferrous metal flash smelting furnaces. magnesia chrome brick made of material. In addition, magnesia-chrome bricks are also widely used in the firing zone of cement rotary kilns and the regenerators of glass kilns.
Zhengzhou Zhenjin refractory material CO., Ltd. was established in 1985 and is located in Xinmi City, Henan Province, a refractory production base in China. It covers an area of about 70,000 square meters. It is a company integrating R&D, production, sales,international trade and technical services. An integrated manufacturing enterprise. The company is committed to the provision,construction and installation of refractory products in the cement industry, glass industry, building materials industry,non-ferrous smelting and metallurgical industries and other personalized services.
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