Heat-storage Alumina granule

Heat storageAlumina granulesare characterized by its high strength, low abrasion loss, large heat capacity and thermal conductivity result in efficient heat storage performance, excellent resistance to high temperature and thermal shock. The balls have been effectively used in recuperator in air separation process, and also used to pre-heat the gas and the air in coal gas heating furnace in iron & steel plant. Data sheet: DescriptionPropertyApply in air separationXR-1Apply in heating furnaceXR-2Chemical composition%Al2O320 3060 65SiO2+Al2O3≥90≥90Fe2O3≤1≤1.5Dimension(mm)Φ10 12/Φ12 14Φ16 18/Φ20 25Thermal capability (J/kg.k) ≥836≥1000Thermal conductivity (w/m.k)2.6 2.9Temperature Range(°C)8001000Refractoriness(°C)15501750Wear rate (%)≤0.1≤0.1Moh's hardness≥6.5≥6.5Compression strength800 12001800 3200Piled weight(kg/m3)1300 14001500 1600