Iron Trench Cover Castable
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Castable material
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It is an unshaped refractory material used as a cover plate for hot-process equipment such as blast furnace iron and slag channels. Primarily, it serves to shield molten iron and slag, provide thermal insulation, and protect the underlying steel structure. Under high-temperature conditions, this material must exhibit excellent resistance to thermal shock, superior insulating properties, and robust structural integrity—crucial features that prevent cracking or collapse caused by frequent thermal stress. Key raw materials include corundum, bauxite, silicon carbide, carbon-based materials, and pure calcium aluminate cement, among others.
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