Menu
Cart
High Purity Alumina Grinding Media Balls, 0.2-50 mm - MSE Supplies

40mm High Purity Alumina Grinding Media Balls

  • 5900


Alumina Ceramic Grinding Media Balls

General Description

  • Specifications
Polished alumina ceramic balls: different sizes of alumina grinding balls available: 5mm, 10mm, 15mm, 20mm etc. The grinding media balls are extensively applied to in the fields of Paint, Ink, Geology, Metallurgy, Electronics, Construction Material, Ceramics, Chemical Engineering, Light Industry, Medicine, Environmental Protection and so on.
  • Technical Data

Model No.

MSE-MM-ALO

Main Material

alumina ceramic -Al2O3

Ball Diameters

5/10/15/20mm

Density

3.8 g/cm3

Shape

sphere

Color

white

Surface Treatment

polished

Hardness

>80 HRA

Abrasion Resistance

very good

Compatible Samples       

medium-hard, fibrous samples

Compatible Grinding Jar  

alumina ceramic jars

 

Element Analysis

General specifications

Main Materials         

Alumina Ceramic -Al2O3

Chemical composition

Element

Share % 

Al2O3

99.651

CaO

0.081

SiO2

0.257

Other

0.011

 

Number and Size of the Balls 

1. Pregrinding the coarse, hard material with large balls

2. Use of many small balls will increase the fine fraction if the running time is increased

3. A higher mass (spec. weight) of the grinding balls will accelerate the grinding

4. Size of the Grinding Balls

Type of feed material

Ball diameter

Hard samples feed particle size <10 mm="" span="">

30 mm or 40 mm

Medium piece size (<5 mm="" span="">

20 mm

Fine material (0.5 mm)

10 mm or 5 mm

Homogenisation of dry or liquid samples

10 mm

Homogenisation of viscous samples

20 mm

These are just clues: 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 abrasion, the hardness of the grinding jars used and of the grinding balls must be higher than that of the material used. Normally, grinding jars and grinding balls of the same material should be chosen.

 

Grinding Jar Ball Configuration

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 clues: the number of balls should be determined experimentally if necessary.

 

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

 


We Also Recommend