Perforated ceramic ball is developed on the basis of inert ceramic ball. It has an adequate mechanical strength, good chemical and thermal stability as the normal inert ceramic ball, further more, it has larger surface area and free void which directly make the dispersion and flux of the fluids increased, and bring down the resistance of the system resulting from the perforated holes on the ball. As a new efficient catalyst support and covering material, it has been widely used in oil refineries, chemical, fertilizer, natural gas and environmental protection.
Main Performance
|
type
index
|
feldstar
|
feldstar
mullite
|
mullite
|
mullite
corundum
|
corundum
|
|
chemical
composition
|
Al2O3 %
|
20-30
|
30-45
|
45-70
|
70-90
|
≥90
|
|
SiO2+Al2O3 %
|
≥90
|
|
Fe2O3 %
|
≤1
|
|
water absorption %
|
≤5
|
|
acid resistance %
|
>98
|
|
alkali resistance %
|
≥80
|
≥82
|
≥85
|
≥90
|
≥95
|
|
bulk density kg/m3
|
1100-1200
|
1200-1300
|
1300-1400
|
1400-1500
|
≥1500
|
|
tem .urgent change
resistance ℃
|
≥300
|
≥400
|
≥500
|
≥700
|
≥800
|
|
comprehensive
strength
KN/pellet
|
6mm
|
>0.40
|
>0.42
|
>0.44
|
>0.48
|
.0.50
|
|
8mm
|
>0.48
|
>0.52
|
>0.60
|
>0.62
|
>0.65
|
|
10mm
|
>0.60
|
>0.70
|
>0.80
|
>0.90
|
>1,00
|
|
13mm
|
>1.00
|
>1.10
|
>1.30
|
>1.50
|
>1.80
|
|
16mm
|
>1.50
|
>1.60
|
>1.80
|
>2.30
|
>2.60
|
|
20mm
|
>1.80
|
>2.00
|
>2.30
|
>2.80
|
>3.20
|
|
25mm
|
>2.50
|
>2.80
|
>3.20
|
>3.60
|
>4.00
|
|
30mm
|
>3.00
|
>3.50
|
>3.50
|
>4.00
|
>4.5
|
|
38mm
|
>4.00
|
>4.50
|
>5.00
|
>5.50
|
>6.00
|
|
50mm
|
>6.00
|
>6.50
|
>7.00
|
>8.50
|
>10.0
|
|
60mm
|
>8.00
|
>8.50
|
>9.00
|
>10.0
|
>12.0
|
|
|
70mm
|
>10.0
|
>11.0
|
>12.0
|
>14.0
|
>15.0
|
|
|
|
|
|
|
|
|
|
|
Tolerance
|
diameter mm
|
6
|
8
|
10
|
13
|
16
|
20
|
25
|
30
|
38
|
50
|
60
|
75
|
|
diameter permit
difference mm
|
±1.0
|
±1.5
|
±2.0
|
±3.0
|
|
hole dia permit
difference mm
|
2-3
|
3-5
|
5-8
|
8-10
|
Remarks: bulk density data is for the reference only, not as the acceptance standard.
