Zirconium Yttrium stabilized Grinding Balls

By special moulding and sintering technology, the Zirconium Yttrium stabilized balls are produced with strict and scientific quality management and are recommended by many famous grinding machine manufacturers as their first choice. These balls have wide applications in ultra-fine powder grinding and dispersion of nonmetal mineral, paint, printing ink, papermaking, electronic materials, magnetic materials, dyestuff, foodstuff and medicine.

Main specifications of Zirconium Yttrium stabilized Grinding Balls Type BGZ-Y

Item Value
ZrO2 + HfO2 93.0 -95.0 %
Y2O3 5.0 – 5.5 %
Zirconiumoxide Yttrium stabilised 99.7
Others 0.30 (DIN51001)
Specific density 6.0 g/cm3
Volumetric bulk density 3.6 – 3.8 kg/l
Mohs hardness (Grade) 9
Microhardness 1150 HV10
Youngs-Module 210GPa
Color white

Size

Standard sizes range from Φ 0.1mm to Φ 6mm, but on demand even to Φ 50 mm.

Applications

Colour and Paint Industry: Grinding and dispersion of coating and paint systems, e.g. car paint, corrosion protection, dip paints, industrial and structural paints, wood varnishes, coil coatings.
Ceramic Industry: Grinding and processing of electrical ceramics, e.g. barium titanate, piezo-electric ceramics, sensors, condensers.
Plant Protection: Dispersion of fungicides, herbicides, insecticides.
Cosmetics: Grinding of pigments and solids for lipstick, skin and sun protection creams.
Pharmaceutics: Nano grinding for the production of active substances and supplies substances.
Battery raw materials: Ultra fine grinding and dispersion of battery raw materials for Cathode- and Anode materials, for example Lithium-Ion-Batteries.

Advantages

High density – 6.00kg/l
High wear and tear resistance, depending on the milling process – approximately 20 times better than zirconium silicate beads and about 35 times better than soda lime glass beads.
High operating time is achievable
Low contamination of the milling product, therefor usable for high-grade grinding of pigments, dyes, pharmaceutical and cosmetic prducts.
Usable for all modern types of mills and high energy mills (vertical and horizontal).
Excellent crystal structure avoids bead breakage and reduces the abrasion of mill parts.
Resistance to a lot of corrosive liquids. Smooth surface, easy cleaning because of low porousness.

European Foof Regulations and German Food and Feed code

On special request:
Conformaty to 1935/2004/EC, Article 3 and the requirements nr 31 of the German Food and Feed Code (LFGB). (Food legislation). The heavy metal content keeps the permitted limits of EU directive 2011/65/EC (RoHS): Lead < 1000ppm, Cadmium <100ppm, Chrome VI < 1000ppm, Mercury < 1000ppm.