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alumina ball
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Characteristics:
Inert ceramic ball is featured with high strength, high chemical stability and thermal stability. It can resist high temperature, pressure, corrosion of acid, alkali and various organic solvent.
Application:
It is widely used as supproting and covering materials to buffer impact of liquid and gas on catalyst in reactor. By this means it can protect the catalysts and improve the distribution of liquid and gas inside the reactor.
Main technical data:
Main crystal phase Al2O3% Content Item | Feldspar | Feldspar-mullite | Mullite | Mullite corundum | Corundum | |
20-30 | 30-45 | 45-70 | 70-90 | ≥90 | ||
Water absorption % | ≤5 | |||||
Acid resistance % | ≥98 | |||||
Alkali resistance % | ≥80 | ≥82 | ≥85 | ≥90 | ≥95 | |
Thermal shcking, °C | ≥130 | ≥200 | ≥500 | ≥700 | ≥800 | |
Crushing Strength N/piece | Φ3 | ≥0.12 | ≥0.14 | ≥0.14 | ≥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 | ≥2.78 | ≥3.20 | ≥3.60 | ≥4.02 | |
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 | ≥10.0 | |
Φ75 | ≥10.0 | ≥11.0 | ≥12.0 | 14.0 | ≥15.0 | |
Bulk density | kg/m3 | 1300-1400 | 1400-1500 | 1500-1600 | 1600-1800 | >1800 |
alumina ball
