Wear Resistance Ceramic ZrO2/Zirconia Grinding Media For Fir Rubber Dispersion/Innovacera

Zircoa’s grinding media has been used successfully, for more than 40 years, to grind electronic ceramics, zircon and zirconia. Our on-going engineering and manufacturing refinement allows us to keep pace with this market. This pro-active approach also prepares us for partnering with the newer electronics markets, which demand higher purity and much less contamination.


1. Main Advantage of the zirconia beads for grinding media:
Excellent wear resistance, Weight loss of ball lee of 4ppm,
High density, grinding efficiency,
No impurity, keep the material high degree of purity.

2. Main Use of the zirconia beads for grinding media:
Electronic material (Such as BaTiO3,BaCO3), Magnetic bands superfine grinding,
Paint,pigment, Coatings dispese and superfine grinding,
Ceramic glaze(zircon sand) superfine grinding,
Medication, Cosmetic disperse and superfine grinding.

3. Typical Properties of the zirconia beads for grinding media:

Major composition %ZrO2 ≥94.5
Packing Density Kg/l 3.6-3.8
Gravity 6.0±0.05
Flexual Strength Mpa ≥900
KIC MNm-3/2 8
Compressive Strength Mpa 7500
Moh's Scale 8.5-9
Weigth loss of ball ppm/hr 4




4. SizesØmm of the zirconia beads for grinding media:
0.2-3mm,5mm,10mm,15mm,20mm


5. Usage of the zirconia beads for grinding media:
Ø0.5-3mm Grinding ball use in sand mill
Ø5-20mm Grinding ball use in mix mill and ball mill
OverØ20mm Grinding ball use in ball mill


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6. Operation Instruction of the zirconia beads for grinding media:

6.1. Clean the Mill chamber before charging with the beads.

6.2. Select beads of appropriate specifications according to the Mill volume, slurry viscosity and out let clearance.

6.3. Test if the slurry viscosity meet the requirements and check if the machine's outlet clearance and rotation speed are appropriate.

6.4. In first use of the beads, it is recommended to pre-grind the beads in a fluid mixture (Resin & Solvent) of certain viscosity for 30 minutes. When low-viscosity solvent is employed for pre-grinding, it is required to reduce the rotation speed and limit the duration to 15 minutes. (Note: Beads labeled as “Pre-ground” no needful to pre-grinding during operation.)

6.5. For low viscosity slurry, dispersion disc peripheral speed should not exceed 14m/s.

6.6. Due to the high kinetic energy with the beads, it is not necessary to operate at high rotation speeds to disperse high solid content and high-viscosity products.

6.7. For paints grinding, it is suggested to use the resin to clean the beads. If the solvent is required for that purpose, reduce the rotation speed and have the cleaning done within 10 minutes. Intermittent clearing operation “On-Off” is recommended.


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