所在栏目: BALL MILL MEDIA

Alumina Ceramic Lab Grinding Balls


 Product Details 

Alumina Ceramic Grinding Media Balls

 

Specifications of  Alumina Ceramic Balls

 

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.

 

Features of Alumina Ceramic Balls

 

1. High cost-effective, low wear and long lifetime

2. Highly wear resistant to acid and solvents

3. Highly polished, smooth, easy to clean, low abrasion to the equipment

4. High mechanical strength, good toughness, impact resistance, no broken beads

5. Mainly used for lab planetary ball mill machine

 

Technical Datas of  Alumina Ceramic Balls

 

Product

alumina ceramic balls

Item No.

DECO-B-ALO

Main Material 

alumina -Al2O3

Shape

sphere

Optional Ball Sizes

3/5/8/10/15/20mm

Density

3.8 g/cm3

Color

white

Hardness

> 80 HRA

Abrasion Resistance

very good

Compatible Samples

medium-hard, fibrous samples

Compatible Ball Mill Jars

alumina jar

 

Photos of Alumina Ceramic Balls

 

Alumina Ceramic Grinding Balls, Sintered Corundum Ball Mill Grinding Media

 

Alumina Ceramic Grinding Balls, Sintered Corundum Ball Mill Grinding Media

 

Alumina Ceramic Grinding Balls, Sintered Corundum Ball Mill Grinding Media

 

Alumina Ceramic Grinding Balls, Sintered Corundum Ball Mill Grinding Media

 

Alumina Ceramic Grinding Balls, Sintered Corundum Ball Mill Grinding Media

 

Element Analysis of Alumina Ceramic Balls

 

General Specification

Main Material

Alumina -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

30 mm or 40 mm

Medium piece size (<5 mm)

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 & 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 Configurations

 

Grinding Jar Volume

100ml

250ml

500ml

1000ml

Compatible Ball Weight

100g

250g

500g

1000g

Dia5mm Grinding Balls (0.25 g/pc)

80 pcs

200 pcs

400 pcs


Dia10mm Grinding Balls (2.00 g/pc)

25 pcs

63 pcs

125pcs

100 pcs

Dia15mm Grinding Balls (6.71 g/pc)

5 pcs

12 pcs

23 pcs

75 pcs

Dia20mm Grinding Balls (15.91 g/pc)




19 pcs

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

2.00

6.71

15.91

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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