The excellent characters of alumina ceramic ball :
1:  High purity , alpha alumina structure , low silica 
 alumina ball 99% is with > 99wt % alpha alumina and < 0.2wt % of SIO2, the high purity , low silica and high strength make this balls an ideal selection for the high temperature and steam applications, where the environment should be avoid the problem of leached silica coating downstream equipment of fouling or polluting the catalyst bed 
2: Excellent thermal and mechanical shock resistance properties
With the excellent of thermal and mechanical shock resistance properties and the high density , alumian ceramic ball 99% are able to work on the temperature up to 1600 degree 
3: Excellent chemical stability with strong resisting of acid , alkaline and organic impregnant make it suitable for applications in olefin processes such as ethylene dryers , where polymerization could be a problem 

Chemical composition :

Items 

Type 90

Type 99

Type 99.5

Al2O3

>90%

>99%

>99.5%

SiO2

< 7% 

<0.2%

<0.2%

Fe2O3

<0.5%

<0.1%

<0.1%

Na2O+K2O

<1.0%

<1.0%

<0.4%

MgO+CaO

<1.0%

<0.2%

<0.2%



Physical Character:

Item 

Type 90

Type 99-1

Type 99-2

  Type-99.5

Heat resistant up to 

1500 ℃

1500 ℃

1600 ℃

  1600 ℃

Water absorption 

<5 % 

2-6%

<1 %

   <1 %

Particle Density (g/cm3)

>3.1

>3.3

3.3~3.65

  3.3~3.65

Package Density (kg/L)

1.6-1.7

1.9-2.0

2.0

  2.0

Mohs hardness (Scale)

9

9

9

  9

Impact shorck resistance (from height 6 m))

Passed 

Passed 

Passed 

Passed 

Average crushing strength

Lbs/pic

KN/pic

Lbs/pic

KN/pic

Lbs/pic

KN/pic

Lbs/pic

KN/pic

3mm (1/8)

90

0.4

112

0.5

135

0.6

135

0.6

6mm (1/4)

292

1.3

337

1.5

360

1.6

360

1.6

10mm (3/8)

1125

5

1350

6

1350

6

1350

6

13mm(1/2)

1575

7

1800

8

1800

8

1800

8

16mm (5/8)

3375

15

2025

9

2925

13

2925

13

19mm (3/4)

3825

17

4049

18

4275

19

4275

19

25mm (1)

4949

22

4500

20

4949

22

4949

22

38mm (1-1/2)

7874

35

8324

37

8999

40

8999

40

50mm (2)

8999

40

9449

42

10123

45

10123

45

76mm (3)

11248

50

12373

55

13498

60

13498

60

 Application: Oil refinery, chemical, fertilizer, natural gas and environmental protection industries etc.


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