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3 mm Alumina Milling Media | Alumina Grinding Media Balls,  MSE Supplies

3 mm Alumina Milling Media | Alumina Grinding Media Balls

  • 6900


Alumina Milling Media | Alumina Grinding Media Balls

General Description

High performance wear resistant alumina ceramic balls are used in grinding and milling various materials.  Different sizes of alumina grinding balls are available: 3mm, 5mm, 8mm, 10mm, 12mm, 20mm, 30mm, 40mm. The alumina grinding / milling media balls are extensively used in the fields of Paints, Inks, Geology, Metallurgy, Electronics, Ceramics, Glass, Refractory, Chemical Engineering, et. al. 

Technical Data

    Product #

    MSE-MM-ALO-3

    Main Material

    aluminum oxide ceramic Al2O3 > 92%

    Ball Diameters

    3/5/8/10/12/20/30/40mm available

    Density

    3.8 g/cm3

    Shape

    sphere

    Color

    white

    Surface Condition

    polished

    Hardness

    >80 HRA

    Abrasion / Wear Resistance

    very good

    Compatible Materials   medium-hard

    Number and Size of the Balls 

    1. Pre-grinding the coarse, hard materials with large balls

    2. The use of many small balls will increase the fine portion of the  materials when the grinding time is increased

    3. A higher percentage of the grinding balls will accelerate the grinding process

    4. Selection of the Size of Grinding Balls

    Type of feed material

    Ball diameter

    Hard samples feed particle size (~10 mm)

    30 mm or 40 mm

    Medium size (<5 mm)

    20 mm

    Fine material (0.5 mm)

    10 mm or 5 mm

    Mixing and blending of dry or liquid materials

    10 mm

    Mixing and blending of viscous samples

    20 mm

    These are just some general recommendations: the size of grinding jars and grinding balls should be determined experimentally if necessary. 

    Choice of Grinding Jars & Grinding Balls

    In order to prevent excessive wear abrasion, the hardness of the grinding jars and the grinding balls must be higher than that of the material used for grinding. Normally, grinding jars and grinding balls of the same material should be chosen.

    Grinding Jars and Balls Combination

    Grinding Jar Volume

    100ml

    250ml

    500ml

    1000ml

    Compatible Ball Weight

    66g

    165g

    330g

    660g

    Ball size/qty (pcs)

    Ø5mm

    106

    300

     

     

    Ø10mm

    20

    76

    50

    100

    Ø15mm

     

    4

    30

    59

    Ø20mm

     

     

    3

    5

    These values are just general recommendations: the size and number of balls should be determined experimentally. 

    Calculated Ball Weight

    Ball diameter (mm)

    5

    10

    15

    20

    30

    40

    Material

    Density

    Calculated ball weight (g)

    Agate

    2.65 g/cm3

    0.17

    1.39

    4.68

    11.10

    37.46

    88.80

    Alumina ceramic

    3.8 g/cm3

    0.25

    1.99

    6.72

    15.92

    53.72

    127.34

    Zirconium oxide

    6.06 g/cm3

    0.39

    3.17

    10.71

    25.39

    85.67

    203.07

    Stainless steel

    7.93 g/cm3

    0.52

    4.15

    14.00

    33.20

    112.05

    265.60

    PTFE

    2.14 g/cm3

    0.14

    1.12

    3.78

    8.96

    30.24

    71.68

    Tungsten carbide

    14.95 g/cm3

    0.98

    7.82

    26.41

    62.59

    211.24

    500.73

     


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