Glass beads - grinding and homogenization

Glass beads made from soda-potash glass are widely used as a homogenization and grinding medium in the so-called inert filling of pearl mills and the mixing and homogenization of suspensions in paint manufacture.

Grinding beads are produced mainly form crystal glass with higher abrasion resistance. We produce grindigng beads to order by special glass type according to customer preference and requirements relating to higher specific gravity, colour or thermal shock resistance.

 
Use: paint manufacture, inert filling of pearl mills.
Dimension:

1–10 mm
Tolerance: from +/- 0,1 to +/- 0.2mm depends on size and type
Surface: polished
Glass:

Specific gravity: 

Coefficient of thermal expansion:

Bulk density:

Mohs hardness:

Vickers and Rockwell hardness:

Modulus of elasticity:

Modulus of elasticity E by Young:

Hydrolytic class:

Acid resistance DIN 12116:

Hydrate oxide resistance according to ISO 695:

2,54 g/cm3

9,1 x 10-6 K-1

1 485 kg/ m3

6

970 - 1018 kp/cm2

7,75 MPa

78 - 85 GPa

III.

III.

A-1

 

Grinding beads are used for mixing and homogenization of solutions and suspensions. A traditional use is for colour mixing in so-called bead mills. Another use is for ink production and homogenization of graphite. They are widely used in the pharmaceutical industry for the manufacture of medicines and ointments.

Diameter (mm) Toleration of diameter (mm) Compressive strength (N/mm2) pieces/kg Contact surface area (cm2)
1,5 +/- 0,2 600 226 350 15 990
2,0 +/- 0,2 900 95 500 11 990
2,5 +/- 0,2 1100 48 900 9 600
3,0 +/- 0,2 1700 28 300 8 000
3,5 +/-0,3 1800 17 800 6 850
4,0 +/-0,3 2300 11 940 6 000
4,5 +/-0,3 2400 8 390 5 350
5,0 +/-0,3 2600 6 110 4 800
6,0 +/-0,3 3600 3 540 4 000
7,0 +/-0,3 3800 2 230 3 400
8,0 +/-0,4 6200 1 500 3 000
9,0 +/-0,4 8000 1 050 2 660
10,0 +/-0,5 8400 760 2 400