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          1. 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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