Product performance: The inert alumina balls are widely used as the covering or supporting materials of the catalyst in the reactors and the packing in the columns in many fields such as petroleum, chemical industry, chemical fertilizer, natural gas and environmental protection etc. It has characteristics of high temperature resistance, lower water absorption,stable chemical property, and can resist corrosion of acid, alkali and other organic solvent,and can endure the temperature urgent changes occurred in production process.      Product parameters: Main Crystal phase Feldspar Feldspar-mullite Mullite Mullite-Corundum Corundum Al2O3 Content，% 20-30 30-45 45-70 70-90 ≥90 Water absorption, % ≤5 Acid resistance,% ≥98 Alkali resistance,% ≥80 ≥82 ≥85 ≥90 ≥95 Temperature urgent change resistance,℃ ≥130 ≥200 ≥500 ≥700 ≥800 Bulk Density, kg/cm3 1300-1400 1400-1500 1500-1600 1600-1800 ＞1800 Crushing Strength KN/piece Φ3 ≥0.12 ≥0.14 ≥0.15 ≥0.16 ≥0.20 Φ6 ≥0.40 ≥0.42 ≥0.44 ≥0.48 ≥0.50 Φ8 ≥0.48 ≥0.52 ≥0.60 ≥0.62 ≥0.65 Φ10 ≥0.60 ≥0.70 ≥0.80 ≥0.90 ≥1.00 Φ13 ≥1.00 ≥1.10 ≥1.30 ≥1.50 ≥1.80 Φ16 ≥1.50 ≥1.60 ≥1.80 ≥2.30 ≥2.60 Φ20 ≥1.80 ≥2.00 ≥2.30 ≥2.80 ≥3.20 Φ25 ≥2.50 ≥2.80 ≥3.20 ≥3.60 ≥4.00 Φ30 ≥3.00 ≥3.20 ≥3.50 ≥4.00 ≥4.50 Φ38 ≥4.00 ≥4.50 ≥5.00 ≥5.50 ≥6.00 Φ50 ≥6.00 ≥6.50 ≥7.00 ≥8.50 ≥10.00 Φ75 ≥10.00 ≥11.00 ≥12.00 ≥14.00 ≥15.00

Diameter tolerance: