They are widely used in many fields, including petroleum, chemical engineering, fertilizer production, natural gas and environmental protection. They are used as covering and supporting materials of catalysts in reaction vessels and as packing in towers.
Al2O3+SiO2 | Al2O3 | Fe2O3 | MgO | K2O+Na2O +CaO | Others |
> 93% | 45-50% | <1% | <0.5% | <4% | <1% |
Item |
Value |
Water absorption (%) |
<2 |
Bulk density (g/cm3) |
1.4-1.5 |
Specific gravity (g/cm3) |
2.4-2.6 |
Free volume (%) |
40 |
Operation temp.(max) (℃) |
1200 |
Moh’s hardness (scale) |
>7 |
Acid resistance (%) |
>99.6 |
Alkali resistance (%) |
>85 |
Size |
Crush strength |
|
Kgf/particle |
KN/particle |
|
1/8”(3mm) |
>25 |
>0.25 |
1/4”(6mm) |
>60 |
>0.60 |
3/8”(10mm) |
>80 |
>0.80 |
1/2”(13mm) |
>230 |
>2.30 |
3/4”(19mm) |
>500 |
>5.0 |
1”(25mm) |
>700 |
>7.0 |
1-1/2”(38mm) |
>1000 |
>10.0 |
2”(50mm) |
>1300 |
>13.0 |
Size |
3/6/9 |
9/13 |
19/25/38 |
50 |
Tolerance |
±1.0 |
±1.5 |
±2 |
±2.5 |