- GRINDING MEDIA
- SOLUTION SELECTION FROM WELLMIC
- BEST SOLUTION FOR GRINDING AND DISPERSION
WELLBEADS - ZOY
Zirconium Oxide / Yttrium beads stabilized used as grinding media for medical and pharmaceutical applications
The ceramic beads WELLBEADS Type ZOY made of stabilized zirconium oxide / yttrium are characterized by an extremely high wear resistance. This property is based on the use of ultrafine crystalline and high-purity raw materials in the manufacturing process and on the constant chemical composition. The very good roundness and the dense, polished surface of the beads also contribute to this wear resistance and thus to the long lifetime circle. Minimal contamination of the ground material, e.g. by critical elements such as zirconium and yttrium, is thus avoided and product quality at the highest level is ensured. This applies in particular to materials and products in the nanoparticle range.
Fields of application
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Specially for wet milling, but also for dry milling
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For paints, inks, coatings
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For products where standard grinding media are at their limits
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For the preparation of electrical products
Due to the relatively high specific weight,
6.2 g/cm3, these beads are suitable for the preparation of
suspensions with a higher solid content as well as higher viscosity.
Quality attributes
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High specific weight: 6.2 ± 0.1 kg/l
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High bulk density: ≥ 3.6 kg/l
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Zirconium dioxide 95% and yttria stabilized 5% powder
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High hardness: > 1250 HV10
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Higher energy input than standard grinding media
Size
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0.3 - 0.5 mm
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0.5 - 0.7 mm
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0.9 - 1.1 mm
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1.4 - 1.6 mm
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2.0 - 2.2 mm
Special sizes and special fractions are available on request
** Special size: 10 mm / 15 mm / 20 mm / 25 mm
WELLBEADS - ZOA
Zirconium / Aluminium oxide beads Cerium stabilized
The ceramic beads WELLBEADS Type ZOA made of zirconium-aluminium oxide beads cerium stabilized are characterized by an extremely high wear resistance. The very good roundness and the dense, polished surface of the beads also contribute to this wear resistance and thus to the long lifetime circle. Minimal contamination of the ground material.
Fields of application
In the paint and lacquer industry, the ceramic beads
ZOA are suitable for grinding and dispersing lacquer
and paint systems with both inorganic and organic pigments.
Quality attributes
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High specific weight: 5.3 ± 0.1 kg/l
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High bulk density: ≥ 3.2 kg/l
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Mixture of zirconium dioxide 80% and alumina 20% powder
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High hardness: > 1100 HV10
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Higher energy input than standard grinding media
Size
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0.3 - 0.5 mm
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0.5 - 0.7 mm
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0.9 - 1.1 mm
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1.4 - 1.6 mm
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2.0 - 2.2 mm
Special sizes and special fractions are available on request
** Special size: 10 mm / 15 mm / 20 mm / 25 mm
WELLBEADS - ZOS
Zirconium silicate beads
The ceramic beads WELLBEADS Type ZOS zirconium-silicate beads have a very dense, homogeneous structure due to the special production method. All grinding systems therefore exhibit significantly better wear behavior than conventional zirconium silicate beads.
Fields of application
In the coating industry, the type of silicate beads are suitable for ink and
coating systems in the medium viscosity range, mostly solvent-based systems.
Grinding dyes for dyeing textiles, plastics, and organic pigments
also suitable.
As alternative to Glass beads
Quality attributes
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High specific weight: 4.1 ± 0.1 kg/l
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High bulk density: ≥ 2.6 kg/l
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Mixture of Zirconium dioxide 65% and silicate 35% powder
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High hardness: > 1050 HV10
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Higher energy input than standard grinding media
Size
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0.9 - 1.1 mm
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1.4 - 1.6 mm
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2.0 - 2.2 mm
Special sizes and special fractions are available on request
** Special size: 10 mm / 15 mm / 20 mm / 25 mm
