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(1)
Product Description
MH Porous Ceramic Balls is also called filtering
balls. It is made by make 20~30% pores inside
the inert ceramic balls. Therefore it can
be used not only for supporting and covering
the catalyst, but also for filtering and
eliminating the impurities of grain, gelatin,
asphaltine, heavy metals and iron ions of
less than 25μm. If the porous ball is set
on the top of a reactor, the impurities
fail to be eliminated in former process
could be adsorbed in the pores inside the
balls, thereupon protect the catalyst and
prolong the operating cycle of the system.
As the impurities present in the materials
are different, the user can select the product
by their sizes, pores and porosity, or if
necessary, add molybdenum, nickel and cobalt
or other active components to prevent the
catalyst from coking or poisoning.
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| (2) Technical
Specification |
| Item
Type |
MH-1 |
MH-2 |
MH-3 |
| Chemical
composition, % |
Al2O3 |
20-80 |
| Al2O3±SiO2 |
≥90 |
| Fe2O3 |
≤1 |
| Pore
size , μm |
0.5-35 |
40-100 |
110-1000 |
| Porosity,
% |
20-30 |
15-25 |
15-25 |
| Air
permeability m3.cm/m2.h.10Pa |
0.2-0.8 |
1-6 |
7-50 |
| Acid
resistance, % |
≥98 |
≥98 |
≥96 |
| Alkali
resistance, % |
≥85 |
≥85 |
≥80 |
| Thermal
shocking resistance, (△T)℃ |
800 |
800 |
800 |
| Crushing
strength, N |
100-12000Deferent
upon types and sizes. |
| Bulk
density ,kg/m3 |
1200-1500 |
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(3) MH porous ceramic balls are divided into
12 grades by reference to Al2O3 content varied
from 25% to 80%, and every more 5% constitutes
a grade, but 12 sizes by reference to the
diameter, such as Φ3,Φ6,Φ8,Φ10,Φ13,Φ16,Φ20,Φ25,Φ30,Φ38,Φ50
and Φ75. The products in other grade and sizes
can be designed and manufactured if to the
user's request. |
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(1)Product
Description
Refractory ceramic balls are made from industrial
alumina and other raw refractory materials,
and processed by mixing, shaping and firing.
it has properties of
1.High strength and long working life,electrical
insulation;
2.High chemical stability,and never react
with the feeding materials;
3.Excellent resistance to high temperature
up to 1900℃.
Refractory ceramic balls can be used as support
and covering packings for catalyst in shift
converter,reformer, hydro converter, desulfurizer,
and methanator, and can also be used as packings
in hot blast heater and heat transformer in
iron and steel industries. |
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| (2)Technical
Specification |
| Item
Type |
General |
Corundum |
Low
silicate |
| Chemical
composition % |
Al2O3 |
30-90 |
90-98 |
≥99 |
| SiO2 |
5-62 |
0.5-5.0 |
≤0.3 |
| Fe2O3 |
≤1 |
≤0.5 |
≤0.1 |
| Refractoriness
℃ |
≥1450 |
≥1750 |
≥1850 |
| Thermal
shock resistance ℃ |
600 |
800 |
800 |
| Crushing
strength N |
100-20000Deferent
upon types and sizes |
| Mohs'hardness |
≥7 |
≥8 |
≥9 |
| Acid
resistance % |
≥95 |
≥98 |
≥98 |
| Alkali
resistance % |
≥85 |
≥95 |
≥98 |
| Bulk
density kg/m3 |
1200-1600 |
1800-2000 |
2000-2200 |
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(3)Size
| Diameter,Φ |
6 |
8 |
10 |
13 |
16 |
20 |
25 |
30 |
38 |
50 |
60 |
75 |
| Toleracne, mm |
±1.0 |
±1.5 |
±2.0 |
±3.0 |
| Diameter of hole,mm |
2-3 |
3-5 |
5-8 |
8-10 |
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