Special Design for Porcelain Grinding Ball - Inert Middle Alumina Balls – Catalyst Support Media – Kelley
Special Design for Porcelain Grinding Ball - Inert Middle Alumina Balls – Catalyst Support Media – Kelley Detail:
Application
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.
Chemical Composition
| Al2O3+SiO2 | Al2O3 | Fe2O3 | MgO | K2O+Na2O +CaO | Others |
| > 93% | 45-50% | <1% | <0.5% | <4% | <1% |
Physical Properties
|
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 |
Crush Strength
|
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 and Tolerance (mm)
|
Size |
3/6/9 |
9/13 |
19/25/38 |
50 |
|
Tolerance |
±1.0 |
±1.5 |
±2 |
±2.5 |
Product detail pictures:



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Sales manager is very enthusiastic and professional, gave us a great concessions and product quality is very good,thank you very much!




