17%~19% Ceramic ball 1/2" for support media
Description:
Inert alumina ball-17 is called ceramic ball 17%~19% Al2O3.
It is equal to Denstone® 57 Support Media.
They are the most widely used support media in the world.
It is made of high quality chemical-porcelain clay materials,
which has quite excellent stability, high mechanical strength
and resistance to thermal shock, This makes them all ideal
choice for support of all types of catalyst.
Technical Parameter:
|
Type
|
Inert Alumina Ball-17
|
|
Color
|
Light gray
|
|
Shape
|
Ball
|
|
Chemical composition
|
|
Min. %
|
Max. %
|
Usual %
|
|
Al2O3
|
17
|
19
|
18
|
|
SiO2
|
70
|
77
|
74.9
|
|
Al2O3 + SiO2
|
90
|
96
|
93
|
|
Fe2O3
|
/
|
1.0
|
0.9
|
|
TiO2
|
/
|
0.5
|
0.46
|
|
CaO
|
/
|
0.65
|
0.42
|
|
MgO
|
/
|
0.5
|
0.38
|
|
Na2O
|
/
|
2
|
1.12
|
|
K2O
|
/
|
3.5
|
3.28
|
|
Physical properties
|
Leachable Iron (%)
|
≤0.1
|
|
Apparent Porosity by Weight (%)
|
D≥10mm
|
≤0.4
|
|
D=6mm
|
≤1.0
|
|
D=3mm
|
≤3.0
|
|
Water absorption (wt.%)
|
＜1.0
|
|
Acid resistance (%)
|
＞99.8
|
|
E-modulus(Gpa)
|
60
|
|
Alkaline resistance (%)
|
＞85
|
|
Bulk Density(Packing density)
|
(g/cm3)
|
1.35
|
|
(lb/ft3)
|
84
|
|
Specific density
|
(kg/m3)
|
2300
|
|
(lb/ft3)
|
144
|
|
Moh’s hardness (scale)
|
7
|
|
Thermal conductivity (w/m2.k)
|
0.9-1.0
|
|
Specific heat (30 degC to 100 degC, Kcal/Kg dec)
|
0.2
|
|
Max. Operating Temperature
|
(℃)
|
1050
|
|
(℉）
|
1922
|
|
Thermal conductivity, 30 degC to 100 degC, W/mK
|
1.0
|
|
Thermal Shock Stability (times)
(500 ℃ then water cooling)
|
10
|
|
Co-efficient of thermal expansion 30 degC to 600 deg C, 10^-6K^-1
|
4.7
|
|
Geometric properties
|
Nominal Size
|
(mm)
|
3
|
6
|
10
|
13
|
16
|
19
|
25
|
38
|
50
|
|
(inch)
|
1/8
|
1/4
|
3/8
|
1/2
|
5/8
|
3/4
|
1
|
1.5
|
2
|
|
Crush Strength Min.
|
(lbs)
|
77
|
176
|
234
|
572
|
726
|
1672
|
1870
|
2090
|
3476
|
|
(kg)
|
35
|
80
|
106
|
260
|
330
|
760
|
850
|
950
|
1580
|
|
(N/PC)
|
343
|
784
|
1039
|
2548
|
3234
|
7448
|
8330
|
9310
|
15484
|
|
Surface area
|
m2/m3
|
1285
|
520
|
350
|
280
|
220
|
170
|
125
|
105
|
65
|
|
Void Fraction
|
%
|
44
|
44
|
44
|
45
|
45
|
45
|
45
|
45
|
45
|
Application:
● Mainly used in the petroleum, chemical industry, fertilizers, natural gas, environmental
protection and other industries. As a catalyst in the reactor to cover support media and tower packing.
Package:
25kg plastic bag
1350kg super sack
250kg~280kg steel drum
