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What is Zirconox Micro Milling Beads Macro Milling Beads
Zirconox - Micro Milling Beads Typical Properties Sieve Analysis Remarkable Wear Resistance Comparative Typical Property
Application Guidelines
Guidelines
The density of Zirconox beads is 6.20gm/cc which is about 3 times greater than glass beads, 1.6 times than Zirconium Silicate beads and 1.1 times than MgO PSZ beads.

As Zirconox beads possess higher density than any other ceramic micro milling beads, they generate considerable heat in milling process, which may affect physical properties of ingredients being milled. Therefore, it is strongly recommended to provide suitable cooling system to the mill chamber, to monitor dissipation of heat generated during the milling process.

Due to higher density of Zirconox beads, it is strongly recommended for higher viscous formulations.

Ensure strainer aperture size is minimum 2 times smaller than the size of bead to avoid any passage of beads with slurry.

To avoid fracture, shearing or flattened plate shaped beads, ensure the gap between walls and bottom of mill vessel to the stator/agitating arms is maintained minimum 3 to 5 times larger than the average bead size.
       
Premier bead mill, USA
 
Hockmeyer vertical bead mill, USA
 
Lehmann bead mill, Germany
 
Basket mill Netzsch, Germany
 
Getzmann bead mill, Germany
Type Of Mill Closed Horizontal Closed Vertical Open Vertical
Bead Charge 65% - 75% of Net Volume 70% - 80% of Net Volume 60% - 70% of Net Volume
Packing Density Vs Fraction Size of Zirconox Micro Beads
Bead Fraction Size Bead Packing Density

Dia. 0.4-0.6 mm
Dia. 0.4-0.7 mm
Dia. 0.6-0.8 mm
Dia. 0.8-1.0 mm
Dia. 0.7-1.2 mm

3.71 kg/ltr
3.72 kg/ltr
3.72 kg/ltr
3.72 kg/ltr
3.72 kg/ltr
 
Bead Fraction Size Bead Packing Density
Dia. 1.0-1.2 mm
Dia. 1.2-1.7 mm
Dia. 1.7-2.4 mm
Dia. 2.4-2.8 mm
Dia. 2.8-3.3 mm
3.76 kg/ltr
3.92 kg/ltr
3.95 kg/ltr
4.02 kg/ltr
4.05 kg/ltr
Calculation of Media Load
Ex: Bead mill net volume capacity is 50 ltr. charging with Dia.1.7-2.4 mm beads. For vertical closed type mill it works out to=35 ltr. (70% of mill vol) x 3.95 kg/ltr. (Packing density of Zirconox beads). That is 138 kg. Zirconox micro bead charge required for a 50 ltr. capacity closed vertical mill.
Zirconox Bead Charge Weight Suggested For Different Capacity Mills, Considering Bead Dia. 1.7-2.4mm
Net Volume of Grinding Chamber (ltr.) Micro Beads
Closed Mill Qty. (Kg.) of Zirconox
Micro Beads Mill Type
Open Mill Qty. (Kg.) of Zirconox Mill Type
 
Vertical
8.0
15.0
30.0
45.0
60.0
115.0
225.0
19-22
35-41
71-83
106-124
142-166
272-318
533-622

 
         
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