Main Specifications:
| Chemical composition |
ZrO2: 80-85%
|
Vickers hardness
|
1150HV
|
|
True density
|
> 5.3g/cm³
|
Crushing strength
|
2000N ( 1.8-2.0mm)
|
|
Filling density
|
3.3g /cm³ (1.8-2.0mm)
|
Ton wear value
|
0.02kg/h
|
|
Moh's hardness
|
Mohs scale 9
|
Package
|
25kg/barrel, or according to customer requirements
|
|
Specification
|
0.5-0.6 0.6-0.8 0.8-1.0 1.0-1.2
1.2-1.4 1.4-1.6 1.6-1.8 1.8-2.0
2.0-2.2 2.2-2.4 2.4-2.8 2.8-3.2
3.2-3.6 3.6-4.0 ....can also be customized
|
Characteristic:
1. Because the zirconia content of this type of zirconia bead is approximately 80%, it is also commonly called "80 zirconia" or "zirconia beads". It uses rare earth yttrium oxide as a stabilizer and is made of high-purity raw materials to ensure that it does not pollute the material.
2. Beads of different specifications can be customized according to customer requirements.
Special statement:
After choosing the zirconia beads, how to use them correctly, avoid the breakage of the zirconia beads, and prolong the life of the grinding media and the contact parts of the sand mill as much as possible.
The popular zirconia beads and zirconium silicate beads in the market are basically two kinds of production processes: the electric melting method and the sintering method. Beads are molded in hot air, cold air, or electrolyte. If a certain technical parameter is not well controlled, the following fragile beads will be produced: A Bubble beads B Snowman beads C Tail beads D Flat (elliptical) beads or more The stress concentration area of the beads is easy to break during grinding, so when selecting beads, try to avoid such beads. As far as the beads themselves are concerned, on the one hand, it is the quality of the beads, on the other hand, the strength of the beads of this material cannot be used for a certain type of sand mill. For example, the Dyno-mill ECM horizontal sand mill in Switzerland and the DCP vertical sand mill in Drais, Germany, is usually recommended to use pure zirconium beads due to the relatively high input energy density. Or consult our technical personnel for details.
Remarks:
1. Mainly white zirconia balls, if necessary, yellow zirconia balls can also be provided.
2. There is a large amount of inventory, which can meet the requirements of delivery at any time.
3. It can meet the requirements of various non-standard sizes.
4. The thermal expansion coefficient of zirconia is 10.5×10-6/°C, which is close to the thermal expansion coefficient of metal, and it fits well with metal, but the dimensional stability changes greatly with temperature, and the failure mode of rolling fatigue contact is destructive fragmentation. It is not as stable as silicon nitride material on some critical occasions.
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