Description: Inert alumina ball-17 is called ceramic ball 17%~19% Al2O3. It is equal to Denstone 57 Support Media.They are the most widely used support media in the world. It is made of high quality chemical-porcelain clay materials, which has quite excellent stability, high mechanical strength and resistance to thermal shock, This makes them all ideal choice for support of all types of catalyst. Technical Parameter: Type Inert Alumina Ball-17 Color Light gray Shape Ball Chemical composition Min. % Max. % Usual % Al2O3 17 19 18 SiO2 70 77 74.9 Al2O3 + SiO2 90 96 93 Fe2O3 / 1.0 0.9 TiO2 / 0.5 0.46 CaO / 0.65 0.42 MgO / 0.5 0.38 Na2O / 2 1.12 K2O / 3.5 3.28 Physical properties Leachable Iron (%) 0.1 Apparent Porosity by Weight (%) D 10mm 0.4 D=6mm 1.0 D=3mm 3.0 Water absorption (wt.%) 1.0 Acid resistance (%) 99.8 E-modulus(Gpa) 60 Alkaline resistance (%) 85 Bulk Density(Packing density) (g/cm3) 1.35 (lb/ft3) 84 Specific density (kg/m3) 2300 (lb/ft3) 144 Moh hardness (scale) 7 Thermal conductivity (w/m2.k) 0.9-1.0 Specific heat (30 degC to 100 degC, Kcal/Kg dec) 0.2 Max. Operating Temperature () 1050 ( 1922 Thermal conductivity, 30 degC to 100 degC, W/mK 1.0 Thermal Shock Stability (times) (500 then water cooling) 10 Co-efficient of thermal expansion 30 degC to 600 deg C, 10^-6K^-1 4.7 Geometric properties Nominal Size (mm) 3 6 10 13 16 19 25 38 50 (inch) 1/8 1/4 3/8 1/2 5/8 3/4 1 1.5 2 Crush Strength Min. (lbs) 77 176 234 572 726 1672 1870 2090 3476 (kg) 35 80 106 260 330 760 850 950 1580 (N/PC) 343 784 1039 2548 3234 7448 8330 9310 15484 Surface area m2/m3 1285 520 350 280 220 170 125 105 65 Void Fraction % 44 44 44 45 45 45 45 45 45 Application: â?? Mainly used in the petroleum, chemical industry, fertilizers, natural gas, environmental protection and other industries. As a catalyst in the reactor to cover support media and tower packing. Package: 25kg plastic bag 1350kg super sack 250kg~280kg steel drum
