Zirconium Silicate Beads

ER120 and Rimax beads are two grades of middle range density beads that often remain the best milling solution in conventional milling equipment. They are the best alternatives to glass beads.

 

ER120 - The original ceramic bead

ER120 is a fused ceramic grinding bead based on zirconium silicate. Available in two grades, ER120A is well suited to large volumes and vertical mills, while ER120S is an enhanced version designed for use in horizontal mills. ER120 is an ideal replacement for glass, improving productivity and cost effectiveness. The polished surface of ER120 ensures low mill wear.

ER120 - The original ceramic bead

RIMAX - A dependable milling solution

Rimax is a durable zirconium silicate bead recognized as the standard in many milling processes. It is recommended when large bead sizes are required or in aggressive environments such as in basket mills. Rimax is the product of choice in most traditional applications.

RIMAX also exists in a higher density version, RIMAX HD, with improved wear performance and durability in severe conditions.

ER120
 
Silica and Zirconia composite material
ER120 - Zirconia and Silica Composite Material
 
Manufactured by the fusion of oxides, ER120 combines the benefits of ceramic zirconia and glass. When cooling to room temperature, the melt solidifies with a specific composite material structure made of a zirconia monoclinic phase dispersed in a glassy silica phase.
 
 
  ER120
Chemical Composition (wt%) ZrO2 SiO2 Others
66 29 5
Specific Gravity (g/cm3) 3.8
Bulk Density (Kg/L) 2.3
Vickers Hardness (HV1) 700
Available Sizes (mm)

ER120A and ER120S

0.3 - 0.7

0.4 - 0.6

0.6 - 1.0

0.8 - 1.25

1.0 - 1.6

1.25 - 2.0

1.6 - 2.5

 

ER120S (Narrow Sizes)

0.1 - 0.2

0.2 - 0.3

0.3 - 0.4

0.6 - 0.8

0.8 - 1.0

1.0 - 1.25

1.25 - 1.6

1.6 - 2.0

 

RIMAX
 
Rimax, sintered zirconium silicate
RIMAX - Sintered Zirconium Silicate
 
Zirpro’s sintering process provides Rimax beads with perfect shape, narrow size distribution and outstanding breakage resistance, for an excellent control of the grinding load inside the mill.
 
  RIMAX
Chemical Composition (wt%) ZrO2 SiO2 Others
58 37 5
Specific Gravity (g/cm3) 4.1
Bulk Density (Kg/L) 2.5
Vickers Hardness (HV1) 1000
Available Sizes (mm)

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 - 2.6

2.5 - 2.8

2.8 - 3.0

RIMAX HD
 
RIMAX HD, high density zirconium silicate
RIMAX HD - High Density Zirconium Silicate 
 
The chemical composition of RIMAX has been modified to achieve higher density for a better milling efficiency, along with improved wear rsistance and durabilty in severe conditions, which makes RIMAX HD well suited for the milling of white mineral like CaCO3 orTiO2.
 
  RIMAX HD
Chemical Composition (wt%) ZrO2 SiO2 Others
60 18 6
Specific Gravity (g/cm3) 4.6
Bulk Density (Kg/L) 2.8
Vickers Hardness (HV1) 1100
Available Sizes (mm)

0.4 - 0.6

1.0 - 1.2

1.8 - 2.0

Other sizes are available upon request