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Zirconium silicate beads are high-performance ceramic grinding media engineered from zirconium silicate (ZrSiO₄), alumina, and silica. Featuring a specific gravity of approximately 4.1, a bulk density of 2.4 g/cm³, and a Vickers hardness reaching up to 1000 HV, these media contain around 65% zirconia content. Often referred to as 65% zirconia beads, they represent a key variant of zirconia-based grinding media recognized for their cost-effectiveness and exceptional stability.
Manufactured using specialized processes, these beads feature an exceptionally homogeneous internal structure that guarantees reliable consistency during material grinding.
Exhibiting remarkable toughness, they resist fragmentation under high-intensity shock and vibration, extending media service life and lowering production costs.
Their high density facilitates rapid kinetic energy transfer during operation, substantially accelerating particle size reduction and optimizing energy efficiency.
Additionally, zirconium silicate beads feature an extremely low friction coefficient. This property minimizes abrasive wear on grinding mill internal components, effectively preserving processing machinery and reducing overall maintenance overhead.
Zirconium silicate beads demonstrate broad versatility across fine grinding, wet milling, and surface treatment processes:
| Property Parameter | High Strength Zirconium Silicate Beads (65% ZrO₂) | High Strength Zirconia Ceramic Balls (95% ZrO₂) |
|---|---|---|
| Main Composition | ZrSiO₄ (65% ZrO₂), Al₂O₃, SiO₂ | ZrO₂ (95%), Y₂O₃ (5% stabilizer) |
| Specific Gravity (g/cm³) | 3.8 - 4.0 | 6.0 - 6.1 |
| Bulk Density (g/cm³) | 2.3 - 2.5 | 3.6 - 3.8 |
| Vickers Hardness (HV) | 900 - 1100 | 1200 - 1400 |
| Mohs Hardness | 7.5 - 8.0 | 9.0 |
| Wear Rate (mg/kg) | ≤ 0.5 | ≤ 0.03 |
| Operating Temp. Range (℃) | -50 to 600 | -50 to 800 |
| Particle Size Range (mm) | 0.1 - 30.0 | 0.05 - 20.0 |
| Color | Yellowish-white / Off-white | Pure White |
| Compressive Strength (MPa) | ≥ 1200 | ≥ 2000 |
Zirconium silicate beads are predominantly composed of zirconium silicate (ZrSiO₄), alumina (Al₂O₃), and silica (SiO₂), featuring a zirconia content of approximately 65% (65% ZrO₂).
Zirconium silicate beads (65% ZrO₂) offer a specific gravity of 3.8–4.0 g/cm³ and a Mohs hardness of 7.5–8.0, providing a cost-effective solution for medium-to-high density milling. 95% zirconia ceramic balls feature higher density (6.0–6.1 g/cm³), superior hardness (9.0 Mohs), and lower wear rates for specialized ultrafine grinding applications.
They possess an exceptionally low friction coefficient and a smooth surface finish, which significantly lowers wear and tear on the internal liners and agitators of grinding mills during high-speed operations.
Yes, zirconium silicate beads are ideal for wet grinding and dispersion of high-viscosity and high-solids slurries in industries such as calcium carbonate, titanium dioxide, coatings, paints, and inks.
Yes. Due to their high impact resistance and uniform density, these beads are widely utilized in metal surface treatment processes like shot peening, deburring, and polishing to achieve a fine, homogeneous finish.
