Zirconia abrasive ball

ceramicfor grindingfor grinding machines

Overview
Zirconium oxide grinding balls (zirconia beads, ZrO₂) are high‑density, high‑hardness ceramic grinding media produced by high‑temperature sintering. With a specific density ≥6.0 g/cm³, Mohs hardness ~9 and low wear rate, they deliver strong impact and shear forces in ball mills, sand mills and agitator mills to grind materials to micron or nanometer size while minimizing contamination. They are suited to processes with strict purity and fineness requirements such as lithium‑ion battery materials, electronic ceramics, high‑end coatings, inks, pharmaceuticals, food and cosmetics.

Additional information
Zirconia ceramic grinding balls are used in industrial production and laboratory mills. Manufactured by high‑temperature firing, the beads are designed to improve grinding efficiency and dispersion in various milling equipments including planetary mills, ball mills and sand mills.

Features

• Good roundness and smooth surface finish for consistent milling performance.
• Very low wear rate to minimize contamination of processed materials.
• Long service life to reduce overall operating cost.
• Chemical stability with resistance to acids and alkalis.

Applications

• Electronic ceramics and components
• Inks, paints, pigments and coatings
• Food industry (processing and dispersion)
• Cosmetic formulations
• Pharmaceutical industry

Main Technical Data
Property — Value
ZrO₂ — 94.6%
Color — White
Specific Density — ≥6.0 g/cm³
Hardness — >10 GPa (Mohs ~9)
Elastic Modulus — 205 GPa
Fracture Toughness — 7–10 MPa·m¹/²
Bending Strength — 1150 MPa
Grain Size — <0.5 μm
Thermal Conductivity — 2.5 W/(m·K)
Thermal Expansion Coefficient — 9.6×10⁻⁶ (20–400°C)

Technical specifications

• Composition: Zirconium oxide (ZrO₂) ~94.6%
• Color: White
• Specific density: ≥6.0 g/cm³
• Hardness: >10 GPa
• Elastic modulus: 205 GPa
• Fracture toughness: 7–10 MPa·m¹/²
• Bending strength: 1150 MPa
• Grain size: <0.5 μm
• Thermal conductivity: 2.5 W/(m·K)
• Thermal expansion coefficient: 9.6×10⁻⁶ (20–400°C)