所在栏目: BALL MILL MEDIA

Natural Brazilian Agate Lab Grinding Balls


 Product Details 

Natural Brazilian Agate Grinding Balls

 

Specifications of  Aagte Balls

 

High purity natural Brazilian agate (97.26% SiO2) grinding media balls, highly wear-resistant and resistant to acids (except HF) and solvent, these balls are used whenever small quantity of samples need to be grinded without contamination. Different sizes of agate grinding balls available: 3mm to 20mm. The grinding media balls are extensively applied to in the fields of Ceramics, Electronics, Light Industry, Paint, Ink, Medicine, Food, Geology, Chemical Engineering and so on.

 

Features of Agate Balls

 

1. High purity, low contamination to the samples

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

3. High specific gravity, high grinding efficiency

4. Highly wear resistant to acid and solvents

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

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

7. Mainly used for lab planetary ball mill machine

 

Technical Datas of  Agate Balls

 

Product

agate balls

Item No.

DECO-B-SIO

Main Material 

agate -SiO2

Shape

sphere

Optional Ball Sizes

6/8/10/15/18/20/25/30mm

Density

2.65 g/cm3

Color

ivory white or gray

Hardness

7.2~7.5 Mohs

Abrasion Resistance

good

Compatible Samples

soft to medium-hard samples

Compatible Ball Mill Jars

agate jar/PA jar/PP jar/PU jar/PTFE jar/HDPE jar

 

Photos of Agate Balls

 

Agate Grinding Beads, Natural Brazilian Agate Grinding Balls

 

Agate Grinding Beads, Natural Brazilian Agate Grinding Balls

 

Agate Grinding Beads, Natural Brazilian Agate Grinding Balls

 

Agate Grinding Beads, Natural Brazilian Agate Grinding Balls

 

Element Analysis of Agate Balls

 

General Specification

Main Material

SiO2

Chemical Composition

Element

Share %

SiO2

97.26

MgO/CaO/Mn2O3

2.74

 

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 (Agate Balls)

 

Grinding Jar Volume

100ml

250ml

500ml

1000ml

Compatible Ball Weight

100g

250g

500g

1000g

Dia5mm Grinding Balls (0.17 g/pc)

118 pcs

294 pcs

589 pcs


Dia10mm Grinding Balls (1.39 g/pc)

36 pcs

90 pcs

180 pcs

144 pcs

Dia15mm Grinding Balls (4.68 g/pc)

7 pcs

16 pcs

32 pcs

107 pcs

Dia20mm Grinding Balls (11.10 g/pc)




27 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

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

 Please Feel free to send us your inquiry in the form below. We will reply you in 24 hours.