(3)
Physical and chemical properties
Item
Type |
Feldstar |
Feldstar-mullit |
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 |
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 |
Φ60 |
≥8000 |
≥8500 |
≥9000 |
≥10000 |
≥12000 |
Φ75 |
≥10000 |
≥11000 |
≥12000 |
≥14000 |
≥15000 |
Bulk
density ,Kg/m3 |
1100-1200 |
1200-1300 |
1300-1400 |
1400-1550 |
≥1550 |
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
The product of other specifications can
also be prepared according to customers'
Diameter,Φ |
3
|
6 |
8 |
10 |
13
|
16 |
20 |
25 |
30
|
38 |
50 |
75 |
Toleracne, mm |
±1.0 |
±1.5 |
±2.0 |
±3.0 |
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 |
|
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
Al2O3
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
|