Zirox S
ZIROX-TZP Zirconium OxideZIROX-CE Zirconium Oxide

Zirconia Silicate Grinding Media

Our ZIROX grinding media is available as either a medium-density bead or high-density. In many applications the higher cost of ZIROX beads will be offset by their longer life. ZIROX is also commonly used for milling lighter shades of paint, ink, and color dispersions where steel media would otherwise discolor the product.

Category:

Product Description

ZIROX-S Zirconium Silicate

Zirox S

ZIROX-S is general purpose and lower priced Zirconia bead which makes for an inexpensive alternative to glass beads. Available as fused or sintered.

COMPOSITION:

AI2O3 10%
ZrO2 54%
SiO2 34%
Other 2%

PACKING: 55 lb. (25 kg.) pails

MATERIAL SPECIFICATIONS:

  • Specific Gravity – 4.10 g/cm3
  • Bulk Density – >2.5 g/cm3
  • Compressive Strength – 715 N
  • Water absorption – <0.01%
  • Hardness (HV) – >1300
  • Mohs Hardness – >7.0
  • Color – Grey White

STANDARD SIZES (mm):
All Zirox-S beads are narrow range.

  • 0.06 – 0.12
  • 0.12 – 0.25
  • 0.25 – 0.42
  • 0.40 – 0.60
  • 0.60 – 0.80
  • 0.80 – 1.0
  • 1.0 – 1.2
  • 1.2 – 1.4
  • 1.4 – 1.6
  • 1.6 – 1.8
  • 1.8 – 2.0

NOTE: Sintered Zirconium Silicate and other sizes are available. Please contact us to inquire.


ZIROX-TZP Zirconium Oxide with Yttria Stabilizer (High Density Zirconium Oxide)

Sigma Zirconia Silicate Grinding Media

ZIROX-TZP is the highest density non-metallic Grinding Media we offer. The cost per pound is higher than ZIROX-S but the life expectancy is much greater and in most cases outweighs the extra cost. This extra life will very often more than justify the extra expense especially when also considering the reduced mill downtime due to media changes.

Bead fragmentation is virtually nil thereby eliminating problems associated with clogged screens.

COMPOSITION:

ZrO2 95%
Y2O 5%

PACKING: As ordered – 5 lb. minimum

MATERIAL SPECIFICATIONS:

  • Specific Gravity – 6.05 g/cm3
  • Bulk Density – 3.7 g/cm3
  • Vickers Hardness – >1350
  • Compressive Strength – >2300 kN
  • Mohs Hardness – 9
  • Sphericity – >95%
  • Color – White

SIZES (mm):

  • 0.1 – 0.2
  • 0.2 – 0.3
  • 0.3 – 0.4
  • 0.4 – 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

NOTE: Other sizes are available. Please contact us to inquire.


ZIROX-CE Zirconium Oxide with Ceria Stabilizer (High Density Zirconium Oxide)

Sigma Zirconia Silicate Grinding Media

ZIROX-CE is a high density non-metallic grinding media well suited for fine grinding in today’s media mills. The cost is higher than Zirox-S but wear resistance and density is greater.

COMPOSITION:

ZrO2 85%
CeO2 14%
Other 1%

PACKING: As ordered – 5 lb. minimum

MATERIAL SPECIFICATIONS:

  • Specific Gravity – 6.25 g/cm3
  • Bulk Density – 3.8 g/cm3
  • Compressive Strength – >2000 kN
  • Vickers Hardness – 1300
  • Mohs Hardness – 9
  • Sphericity – 95%
  • Color – Yellow-Brown

SIZES (mm):

  • 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

NOTE: Other sizes are available. Please contact us to inquire.