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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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