电熔致密刚玉就是以工业氧化铝为主要原料，在三相电弧炉内使γ-AL2O3转变为α-AL2O3而成。γ-AL2O3转变为α-AL2O3是单向的致密刚玉，主晶相大于96%，气孔率小于4%，转化后的体积变化率大约缩小14%左右，因此致密刚玉具有良好的抗酸碱性能，在高温下具有良好的耐磨、抗侵蚀及体积稳定性。
致密刚玉作为**耐火材料，广泛应用于冶金、石化、建材、高温陶瓷、机械等行业，特别是在陶瓷辊道棒、连铸三大件、大型出铁沟等方面有广泛的用途。
Dense fused corundum is madefromγ-Al2O3 byransforming iioα- Al2O3, which isaunidirectionalprocess, ithe 3-phase Arc Fuace, usingindustrialalumina asmairaw material. Its maicrystal phasecoenis moretha96%,whilehe porosityate lessha4%.Andthe volume-changeratiodecrease by abou14% afterhetransformation, hence, densefusedcorundum possesses good acid andkaliesistance, and hasgoodabrasion-resistance, erosion-resistanceand volume stabilityathighemperature.
As a kind ofoprefractorymaterial,dense fused corundum is widely used inindustries likemetallurgy.,petrochemical, building materials, hightemperatureceramics,mechanical manufacture and etc., especially ihemanufacture ofthe ceramicollers,hree-pieces shroud,monolithicstopper andirorunners for large blasfuace and soon.
致密电熔刚玉理化指标Dense FusedCorundum’sphysiochemicalindexes:
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致密电熔刚玉物理性能指标DenseFusedCorundum’sphysical property indexes: