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Refractory Brick
Phosphate bricks, also known as phosphate-bonded high-alumina bricks, are high-alumina refractory products made from high-alumina bauxite clinker as aggregate and fine powder, with phosphate or aluminum phosphate as the binder, formed by semi-dry pressing and heat-treated at 400 to 600 degrees Celsius.
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The quality of high-alumina bricks varies significantly, as different raw materials are used, resulting in a large difference in aluminum content. Ordinary high-alumina bricks have an aluminum content between 55% and 75%, a bulk density of 2.3 to 2.5, and a refractoriness of 1750 to 1790°C.
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Heavy clay bricks have characteristics such as low linear expansion coefficient and good thermal shock stability, and they have good corrosion resistance to acidic furnace slag.
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Corundum-mullite bricks are mainly used in the petrochemical industry, large and medium-sized synthetic ammonia gasification furnaces, magnetic material gas furnace materials, and high-temperature industrial kiln supporting facility materials.
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It has characteristics such as high fire resistance, high strength, good thermal shock stability, and strong erosion resistance. It is resistant to scouring, wear, erosion, and spalling during use, and has good performance in the metallurgy, glass, petrochemical, and environmental hazardous waste disposal industries.
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Zhongwang Temple, Yuecun Town, Xinmi City, Henan Province, China
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