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Lime industry
Spray coal pipe using refractory material
The coal spray pipe uses refractory castable materials for kilns with harsh and severe operating conditions, made from high-strength materials such as corundum and mullite as aggregates, and ultra-fine powder as a binder to create high-performance refractory castables.
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Phosphate refractory castable is a castable bonded with phosphate, belonging to an acidic matrix, with a usage temperature of 1400-1600℃.
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High-alumina castable is an unshaped refractory castable composed of high-alumina aggregates with an Al₂O₃ content greater than 75%, combined with high-alumina powder and additives, resulting in a total aluminum content greater than 55%. After initial setting, high-alumina castable is standard cured for 28 days, achieving a compressive strength of 40 to 60 MPa.
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Corundum mullite castable is made from brown corundum and mullite aggregates as the main components, utilizing micro-powder technology, combined with white cement and additives.
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Magnesium refractory mud is an amorphous refractory material used for laying magnesium refractory bricks. The quality of the refractory mud determines the overall construction quality of the kiln. The destructive power of the kiln under high-temperature conditions often starts from the weak refractory mud between the refractory bricks.
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Phosphate refractory mud is mainly used in conjunction with phosphate-bonded refractory bricks, such as high-alumina bricks, low-creep high-alumina bricks, and bricks for blast furnaces and hot blast stoves when constructing kiln linings.
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Zhongwang Temple, Yuecun Town, Xinmi City, Henan Province, China
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