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      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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