High Purity Al2O3 Alumina Ceramic Grinding Balls Media Spherical
Titanox Balls High-Purity Alumina for Corrosive Environments provide exceptional durability and resistance for demanding industrial applications. These alumina ceramic balls are engineered to withstand extreme conditions while maintaining consistent performance.
Key Features
- High Strength: Compressive strength up to 35000 N for larger sizes
- Corrosion Resistance: Excellent performance in both acidic and alkaline environments
- Thermal Stability: Maintains integrity at high temperatures
- Low Water Absorption: Less than 5% absorption rate for humid conditions
- Chemical Inertness: Prevents unwanted chemical reactions
Chemical Composition
| Composition | Al2O3 | SIO2 | CaO+MgO | Fe2O3 |
|---|
| Wt% | ≥92 | 7 max | ≤2 | ＜0.1 |
Typical Properties
| Specific Gravity g/cm3 | Bulk Density kg/L | Hardness Moh's | Water Absorption % | Self wearing loss %(24hrs) | Compression Mpa |
|---|
| ≥3.65 | ≥2.2 | 9 | ＜0.01 | ≤0.012 | ≥2000 |
Available Sizes (Φ mm)
| 0.5-1.0 | 6.0 | 20.0 | 70.0 |
| 1.0 | 8.0 | 25.0 | 80.0 |
| 2.0 | 10.0 | 30.0 | 90.0 |
| 3.0 | 13.0 | 40.0 | 100.0 |
| 4.0 | 15.0 | 50.0 | |
| 5.0 | 18.0 | 60.0 | |
Performance Specifications
Mechanical & Physical Properties
| Property | Alumina (92%) | Alumina (99%) | Zirconia | Steel | Silica Sand |
|---|
| Density (g/cm³) | 3.6 | 3.9 | 6.0 | 7.8 | 2.2 |
| Hardness (Mohs/HV) | 9 (~1,500 HV) | 9 (~1,800 HV) | 8.5 | 6-7 | 7 |
| Wear Rate (g/ton) | 10-50 | 5-20 | 1-5 | 100+ | 300+ |
| Compressive Strength | 2,000 MPa | 2,500 MPa | 2,200 MPa | 500 MPa | Low |
Key Takeaways: 99% Alumina offers 30% lower wear than 92% grade, with 2-5x longer lifespan vs. steel in abrasive slurries. Harder than zirconia but less tough, making it ideal for fine grinding.
Chemical & Thermal Resistance
| Property | Alumina (99%) | Performance Impact |
|---|
| Chemical Inertness | Resists pH 1-14 | Safe for acids/alkalis, pharmaceuticals |
| Max Temperature | 1,600°C | Stable in kilns, calcination |
| Thermal Shock | Moderate | Avoid rapid quenching (>200°C/min) |
| Contamination Risk | None | Zero metal ions (critical for Li-ion batteries) |
Vs. Competitors: Beats steel in corrosion resistance and outperforms silica sand in wear & consistency.
Industry-Specific Performance
| Industry | Benefit of Alumina Balls |
|---|
| Mining | 50% lower replacement cost vs. steel in ore grinding |
| Pharma | FDA-compliant, no endotoxin release |
| Batteries | Prevents Fe/Ni contamination in cathode materials |
| Paints | Maintains color purity (no metal leaching) |
Cost vs. Lifetime Analysis
| Media Type | Cost per kg | Lifespan (hours) | Cost per Ton Ground |
|---|
| Alumina (92%) | $5-10 | 2,000-3,000 | $0.50-1.00 |
| Steel | $2-4 | 500-800 | $2.00-4.00 |
| Zirconia | $50-100 | 5,000+ | $0.20-0.50 |
Trade-Off: Alumina balances cost and performance - Ideal when zirconia is over-spec.
Performance Summary: Why Choose Alumina?
- Cost-Effective: 3x cheaper than zirconia for moderate abrasion
- High-Purity: 99.9% Al₂O₃ for sensitive applications (e.g., pharma)
- Versatile: Works in ball/attritor/planetary mills
- Low Maintenance: Non-corrosive, easy to clean
Limitations: Not for high-impact milling (e.g., hammer mills). Thermal shock risk in rapid cooling applications.
Packaging & Handling
Standard packaging: 25KG/woven bag, 1000KG-1250KG per pallet with shrink wrap.
Important Usage Guidelines
1. Avoid Contamination: Keep balls clean and free from dust, grease, or other contaminants
2. Proper Storage: Store in dry, clean environment to prevent moisture absorption
3. Temperature Limits: Avoid sudden thermal shocks to prevent cracking
4. Load Capacity: Do not exceed recommended load capacity
5. Regular Inspection: Periodically inspect for signs of wear or damage
6. Avoid High-Impact Applications: Not suitable for heavy impact or shock loads
Production & Global Reach
Global Shipping Cases
Ship to UAE:
Ship to Netherlands:
Frequently Asked Questions
- What are alumina ceramic balls made of? - Aluminum oxide (Al₂O₃), a high-purity ceramic material
- Key properties? - High hardness, wear resistance, chemical stability, and high-temperature resistance
- Common applications? - Grinding media, bearing components, valve balls, and wear-resistant applications
- Why choose over steel? - Superior wear resistance, chemical stability, and lighter weight
- Available sizes? - From 1mm to several inches, depending on application requirements
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