Inert alumina ceramic ball
(1) Introduction
The inert alumina ceramic ball is broadly utilized as the covering or
supporting materials of the catalyst in the reactors and the packing in the
columns in such varied areas, for example, petroleum, chemical industry,
chemical fertilizer, natural gas, and environmental protection etc. There are
lots of merits for it, for instance, the stronger resistance to high
temperature and high pressure, lower ratio of the moisture absorbing, more
stable chemical properties, and so on. It is capable of enduring the corrosion
of acid, alkali, and organic solvent. In addition, it can also bear the rapid
transitions of temperature during the operation. In fact, its principal
functions are to accelerate the distribution of gas or liquid, and support or
protect the active catalyst, which especially has the relevantly lower
mechanical strength.
This product, which had been developed by our group company, had gained
the award of excellent new product and the prize of the science and technology
improvement ofJiangxiprovince in 1988. In the same year, this product entered the national honor
roll of the excellent new product. In 1990, it gained the national certificate
of the science and technology achievements. In 1996, it also got the provincial
certificate and the golden prize of the famous brand product. Of late years, it
has always been recommended by SINOPEC. Since it entered the market, all
circles of customers had realized that its properties and effects are the same
as the foreign products, and some of the technological index has surpassed the
same foreign products.
(2) Chemical constitutions
|
Chemical compositions
|
Content
|
|
AL2O3
|
(Standard value +4) %
|
|
AL2O3+SiO2
|
≥92%
|
|
Fe2O3
|
<1%
|
(3) Physical and chemical
properties
|
Item
Type
|
Feldstar
|
Feldstar-mullite
|
Mullite
|
Mullite-corundum
|
Corundum
|
|
Chemical
composition %
|
Al2O3
|
20-30
|
30-45
|
45-70
|
70-90
|
≥90
|
|
Al2O3+SiO2
|
≥90
|
|
Fe2O3
|
≤1
|
|
Water absorption %
|
≤5
|
|
Acid resistance %
|
≥98
|
|
Alkali resistance %
|
≥80
|
≥82
|
≥85
|
≥90
|
≥95
|
|
Thermal resistance %
|
≥1300
|
≥1400
|
≥1500
|
≥1600
|
≥1700
|
|
Crushing strength
|
Φ3
|
≥120
|
≥140
|
≥150
|
≥160
|
≥200
|
|
Φ6
|
≥400
|
≥420
|
≥440
|
≥480
|
≥500
|
|
Φ8
|
≥480
|
≥520
|
≥600
|
≥620
|
≥650
|
|
Φ10
|
≥600
|
≥700
|
≥800
|
≥900
|
≥1000
|
|
Φ13
|
≥1000
|
≥1100
|
≥1300
|
≥1500
|
≥1800
|
|
Φ16
|
≥1500
|
≥1600
|
≥1800
|
≥2300
|
≥2600
|
|
Φ20
|
≥1800
|
≥2000
|
≥2300
|
≥2800
|
≥3200
|
|
Φ25
|
≥2500
|
≥2800
|
≥3200
|
≥3600
|
≥4000
|
|
Φ30
|
≥3000
|
≥3200
|
≥3500
|
≥4000
|
≥4500
|
|
Φ38
|
≥4000
|
≥4500
|
≥5000
|
≥5500
|
≥6000
|
|
Φ50
|
≥6000
|
≥6500
|
≥7000
|
≥8500
|
≥10000
|
|
Φ75
|
≥10000
|
≥11000
|
≥12000
|
≥14000
|
≥15000
|
|
Bulk density , kg/m3
|
1300-1400
|
1400-1500
|
1500-1600
|
1600-1800
|
≥1800
|
|
|
|
|
|
|
|
|
|
|
Note:
It may only be provided as the reference for the bulk density, and it is not as
the evidence of check.
(4)
Main specifications and types
a) Specifications and
allowable deviation of diameter
|
Diameter,Φ
|
3
|
6
|
8
|
10
|
13
|
16
|
20
|
25
|
30
|
38
|
50
|
75
|
|
Toleracne, mm
|
±1.0
|
±1.5
|
±2.0
|
±3.0
|
The product of other
specifications can also be prepared according to customers' requirement.
b) Assortments
In accordance with the
content of inert AL2O3 from 25% to 95%, there are 17 assortments on every 5% as
a grade.
|
No.
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
|
AL203 content,
(%)
|
<25
|
25
|
30
|
35
|
40
|
45
|
50
|
55
|
60
|
65
|
70
|
75
|
80
|
85
|
90
|
95
|
>95
|
(5)
Notice to ordering goods
a) When ordering goods,
customers should introduce the radical situations of the equipment,
including the sizes of
reactors, and the operational temperature etc.
b) Customers should
provide the specification, types, and the total content of Si, Al related to
the required product.
c) As the inert ceramic
ball belongs to the natural tight stacking in the reactors, customers should
consult with our technological staff to determine the amounts according to the
practical loading volume, and remain 15-20% margins.
(4)
Product Standard
Chemical
Industry Standard HG/T 3683.1 - 2000 Industrial Ceramics Ball - Perforated
Ceramics ball
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