The application scale of amorphous refractory materials has gradually expanded from low and medium temperature ranges to high temperature ranges. AmorphousRefractory MaterialsAs a new type of refractory material, it boasts advantages such as short production cycle, energy-saving production, simple construction, strong integrity in use, and good comprehensive application effects. It has garnered increasing attention and is trending towards replacing certain firing products. Due to the successive development of low-cement, ultra-low-cement, and cement-free refractory castables, as well as the selection of artificial composition materials and electrically melted materials, the variety has expanded continuously, with quality significantly improved. Its consumption accounts for about 50% of the total consumption of shapeless refractory materials.
IndefiniteRefractory materialsOur scale of application has expanded from the low and medium-temperature range to the high-temperature range, from atmosphere furnaces to melt-contacting smelting furnaces. For example, the点火 furnaces and heat preservation furnaces of sintering machines now use high-alumina refractory plastics as linings, which have exceeded the lifespan of brick-lined linings. The ironmaking tuyere of the blast furnace is lined with castables made from materials such as corundum and silicon carbide, which, after continuous repairs, can handle up to 500,000 to 1,000,000 tons of iron, meeting the requirements for blast furnace intensification. Additionally, for water-cooled and bottom tapping electric furnaces, the不定形 refractory material accounts for 4 to 5 kg per ton of steel. The integrated ladle lining, produced by casting and vibration molding with quality materials, has become the development direction for ladle lining construction.
Continuous casting with不定形Refractory MaterialsNew types have been added, and the application scope has expanded, such as the successful use of magnesium-chromium refractory coatings as the operating layer in intermediate tanks, and dense, high-strength castables with ultra-low cement bonding used for slag dam plates in the refining of steelmaking slag. In the off-line refining aspect, high-purity aluminum-magnesium castables reinforced with steel fibers have been successfully applied to CAS infiltration pipes; and corundum castables bonded with electric fused ultra-high alumina cement used as the liner for RH pipes have also achieved satisfactory results. The heating furnace has been improved from using high-alumina cement bonded castables and plastics to clay bonded castables, significantly extending the service life beyond that of clay bricks.
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