Inert alumina ceramic ball is widely used in many fields, such as petroleum, chemical engineering, fertilizer, environmental industry, etc. Being the covering and supporting material and tower packing for catalyst in the reactor, the ceramic ball has features of high intensity, high chemical stability and thermal stability, it withstands high temperature and pressure during the process, and also resists the corrosion from the acid, alkali and other organic solvent. The leading effects of ceramic ball are to increase the distributing spots of gas or liquid, also support and protect the activated catalyst from the rushing of the gas and liquid inside of the reactor.
Physical Properties
|
type index
|
Feldstar
|
Feldstar mullite
|
mullite
|
Mullite corundum
|
corundum
|
|
Al2O3 %
|
20-25
|
25-45
|
45-70
|
70-90
|
>90
|
|
Bulk density g/cm³
|
1.4-2.0
|
|
Water absorption %
|
<3
|
<1
|
|
Acid resistance %
|
>98
|
|
Alkali resistance %
|
>80
|
>82
|
>85
|
>90
|
>95
|
|
Mohs hardness scale
|
≥6.5
|
|
Thermal conductivity Kcal/mh
|
≥0.7
|
|
Temp.urgent change resistance ℃
|
>250
|
>300
|
>500
|
>700
|
>800
|
|
Fire resistance ℃
|
>1300
|
>1400
|
>1500
|
>1600
|
>1700
|
|
Compressive strength KN/pellet
|
Diameter 6mm
|
>0.40
|
>0.45
|
>0.6
|
>0.7
|
>0.8
|
|
8mm
|
>0.7
|
>0.8
|
>0.9
|
>1.0
|
>1.2
|
|
10mm
|
>0.9
|
>1.0
|
>1.2
|
>1.5
|
>1.8
|
|
13mm
|
>1.2
|
>1.3
|
>1.6
|
>1.8
|
>2.0
|
|
16mm
|
>1.5
|
>1.6
|
>1.8
|
>2.3
|
>2.6
|
|
20mm
|
>1.8
|
>2.0
|
>2.3
|
>2.8
|
>3.2
|
|
25mm
|
>2.5
|
>2.8
|
>3.2
|
>3.6
|
>4.0
|
|
30mm
|
>2.8
|
>3.0
|
>3.5
|
>4.0
|
>4.5
|
|
38mm
|
>4.0
|
>4.5
|
>5.0
|
>5.5
|
>6.0
|
|
50mm
|
>6.0
|
>6.2
|
>10.0
|
>10.5
|
>11.0
|
|
60mm
|
>8.0
|
>8.5
|
>11.0
|
>12.0
|
>14.0
|
|
75mm
|
>13
|
>11
|
>12
|
>14
|
>15
|
Chemical Composition
|
Al2O3
|
30-85%
|
Fe2O3
|
<1.0%
|
Na2O
|
<1.5%
|
K2O
|
<2.5%
|
|
SiO2
|
7-62%
|
CaO
|
<1.5%
|
MgO
|
<1%
|
Other
|
Tiny
|
Variety of Inert Alumina Ceramic Ball
In terms of Al2O3 contents, Inert alumina ceramic ball can be divided into 17 varieties, from 25% and with a gap of 5%.
|
variety
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
|
Contents of Al2O3%
|
<25
|
25
|
30
|
35
|
40
|
45
|
50
|
55
|
60
|
65
|
70
|
75
|
80
|
85
|
90
|
95
|
>95
|
Remarks:
1. Al2O3 and SiO2 contents ≥92%
2. Al2O3 and SiO2 two ingredients contents may request by the customer.
3. bulk density data is for the reference only, not as the acceptance standard.
Tolerance
|
Diameter mm
|
3
|
6
|
8
|
10
|
13
|
16
|
20
|
25
|
30
|
38
|
50
|
65
|
75
|
|
Diameter permit different mm
|
+-1.0
|
+-1.5
|
+-2.0
|
+-3.0
|
