Main product

Zirconia bead

Main model：Φ0.1mm、0.15mm、0.2mm……1mm……5mm

ZrO2：≥95%

Y2O3：≥4.5%

Densuty: ＞6.0g/Cm 3 Bulk densuty: ＞3.7g/Cm 3

Cnushing strength: ＞2.0KN(φ2mm) Abrasion ratio: ＜0.5ppm/h

CAS: 1314-23-4

Zircon sand Customs Code: 69091200.00

Zirconia beads are also called zirconia balls, TZP, grinding beads, grinding balls, is a kind of high-quality grinding material, mostly composed of Tetragonal Zirconium oxide (Tetragonal Zirconium Polycrystal), so it is also called “TZP” zirconia beads, which are made of micron and subnano zirconia and yttrium oxide as raw materials. It is a kind of grinding bead used for ultra-fine grinding and dispersion of materials requiring “zero pollution” and high viscosity and high hardness. Zirconia beads (referred to as “TZP” zirconia beads) are made of micron and sub-nanometer raw materials with advanced technology. It is mainly used in the ultra-fine grinding and dispersion of materials requiring “zero pollution” and high viscosity and high hardness, such as: electronic ceramics, magnetic materials, zirconia, silicon oxide, zirconium silicate, titanium dioxide, medicine and food, pigments, dyes, inks, special chemical industry.

Technical parameter

The main properties of zirconia beads
● Ball round overall good, smooth surface, pearl-like luster;
● It has very toughness, impact resistance, and does not break during high-speed operation.
● The wear resistance of TZP zirconium beads is 30-50 times that of glass beads;
TZP zirconium bead density is higher than other grinding beads, has a very high grinding efficiency, can improve the material solid content or increase the material flow.
It has the following characteristics:

1. Very low (ppm level) wear
2. The high hardness is not easy to break, which is conducive to the grinding of high hardness materials
3. High density can effectively improve grinding efficiency
   Scope of application of zirconia beads
   1, wear resistance, corrosion resistance products: paint, textile, pigment, printing and dyeing
   2, high strength, high toughness products: magnetic materials, piezoelectric ceramics, dielectric ceramics
   3, to prevent pollution: medicine, food, cosmetics
   4, ceramics: electronic ceramics, refractory ceramics, structural ceramics
   Causes of broken zirconia beads
   1, the cause of broken beads
   The popular glass beads, zirconium silicate beads and pure zirconium beads on the market, in terms of production process, are basically two kinds of electric melting method and sintering method. Beads are formed in hot air, cold air or electrolyte, as in a key technology
   If the parameters are not well controlled, the following fragile beads will be produced:
   1.1, bubble beads
   1.2. Snowman beads
   1.3. Tail beads
   1.4, flat (oval) beads
   The above beads are easy to break during grinding because of the stress concentration area, so when selecting beads, try to avoid such beads.
4. Judging the normal wear and crushing of zirconia beads
   Under normal circumstances, the zirconia beads that work for a period of time become smaller and the surface is smooth without edges and corners, which should be the wear of normal beads; On the contrary, if there is an angular, flaky shaped bead in the bead, it should be a broken bead.
   3, the cause of broken beads
   As far as the beads themselves are concerned, on the one hand, the quality of the beads is a problem, and on the other hand, the strength of the beads of this material cannot be better than that of a certain type of sander. Such as Switzerland’s Dyno-mill ECM horizontal sand mill and Germany’s Drais DCP vertical sand mill, due to the input energy density is relatively high, it is usually recommended to use pure zirconium beads.
   In addition, zirconia beads under the normal operation of the sand mill, to be subjected to about 1 kg of pressure, relative to the glass beads can withstand about 5000 kg of force and zirconia silicate beads 9000 kg, zirconia beads in the sand mill force is insignificant, so the reason for broken beads should be focused on the equipment and process, and take the corresponding solution.