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Our company has developed a variety of inert alumina balls and cover balls are widely used in petroleum, chemical, fertilizer, fine chemicals, environmental protection, gas and other industries. Such as hydrogenation, hydrogen production, isomerization, etc. re-fixed bed reactor .
Porous ceramic balls are widely used support media in the world because of their excellent consistence and reliability. Products to these specifications are manufactured from very high quality chemical-porcelain clay materials, which has quite excellent stability, high mechanical strengthand resistance to thermal shock. This makes them all ideal choice for support of all types of catalyst.
Chemical composition
|
|
Min. % |
Max. % |
Usual % |
|
SiO2 |
64.00 |
75.00 |
68.40 |
|
Al2O3 |
19.00 |
26.00 |
24.50 |
|
Fe2O3 |
****** |
0.12 |
0.10 |
|
TiO2 |
****** |
1.40 |
0.96 |
|
CaO |
****** |
0.65 |
0.42 |
|
MgO |
****** |
0.60 |
0.38 |
|
Na2O |
****** |
2.00 |
1.12 |
|
K2O |
****** |
3.50 |
3.28 |
|
Al2O3 + SiO2 |
90.00 |
96.00 |
92.90 |
Physical properties
|
Index |
Value |
Value |
|
Leachable Iron |
≤ 0.1% |
****** |
|
Apparent Porosity by Weight, dia. ≥ 10mm |
≤ 0.4% |
****** |
|
Apparent Porosity by Weight, dia. = 6mm |
≤ 1.0% |
****** |
|
Apparent Porosity by Weight, dia. = 3mm |
≤ 1.0% |
****** |
|
Moh's Hardness Scale |
>6.5 |
****** |
|
Water Absorption |
<1.0wt.% |
****** |
|
Acid Resistance |
>99.8% |
****** |
|
Thermal Conductivity |
0.9-1.0 w/m 2 .k |
****** |
|
Thermal Expansion @ 500 |
0.20% |
****** |
|
Specific Heat |
628-837 j/kgq |
****** |
|
Thermal Shock Stability, 500 then water cooling |
10 times |
****** |
|
Max. Operating Temperature |
1050 |
1922 |
|
Specific Density |
2,350 kg /m3 |
146 lb /ft3 |
|
Bulk Density (Packing Density) |
1,400 g /cm3 |
87 lb /ft3 |
Crush Strength
|
|
Crush Strength |
|||
|
Nominal Size |
(lbs) |
(kg) |
(N/pc) |
|
|
mm |
Inch |
min. |
min. |
min. |
|
3 |
1/8 |
50 |
23 |
225 |
|
6 |
1/4 |
123 |
56 |
550 |
|
10 |
3/8 |
202 |
92 |
902 |
|
13 |
1/2 |
385 |
175 |
1716 |
|
16 |
5/8 |
520 |
236 |
2315 |
|
19 |
3/4 |
978 |
444 |
4355 |
|
25 |
1 |
1428 |
648 |
6355 |
|
38 |
1-1/2 |
2020 |
916 |
8983 |
|
50 |
2 |
2987 |
1355 |
13288 |
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