Product Description
●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 |
● Sizes Φ:
Size(mm) | Size(mm) | Size(mm) | Size(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 |
|
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:
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:
Best For:
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). |
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:
✅ 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:
We supply:
●Package:
25KG/woven bag,1000KG-1250KG for one pallet with shrink wrapped
● Notice:
Avoid Contamination:
Keep the balls clean and free from dust, grease, or other contaminants, especially in precision applications like bearings or grinding.
Proper Storage:
Store in a dry, clean environment to prevent moisture absorption or contamination. Use protective packaging if necessary.
Temperature Limits:
Alumina ceramic balls can withstand high temperatures (up to 1600°C), but avoid sudden thermal shocks to prevent cracking.
Compatibility Check:
Ensure the balls are compatible with the operating environment, including chemical exposure, load, and speed conditions.
Load Capacity:
Do not exceed the recommended load capacity for the balls, as excessive stress can lead to failure.
Installation Precision:
Use proper techniques and tools during installation to avoid misalignment or damage, especially in bearing applications.
Avoid Abrasive Contact:
While alumina is highly wear-resistant, avoid contact with extremely abrasive materials that could cause surface damage over time.
Regular Inspection:
Periodically inspect the balls for signs of wear, cracks, or surface damage, especially in high-stress applications.
Do Not Use in Impact-Intensive Applications:
Alumina ceramic balls are not suitable for applications involving heavy impact or shock loads, as they may fracture under such conditions.
Follow Manufacturer Guidelines:
Adhere to the operating instructions and recommendations provided by the manufacturer for optimal performance and safety.
Avoid Chemical Incompatibility:
While alumina is chemically resistant to most substances, verify compatibility with specific chemicals in your application.
Use Appropriate Lubrication (if required):
In bearing applications, ensure proper lubrication to reduce friction and wear, even though alumina has a low friction coefficient.
Replace Worn-Out Balls:
Replace balls that show significant wear or damage to maintain system efficiency and prevent failure.
Consult Experts for Special Applications:
For unique or extreme applications, consult with material experts or the manufacturer to ensure proper selection and use.
Avoid Excessive Vibration:
Excessive vibration can cause wear or damage to alumina ceramic balls. Ensure proper alignment and balance in the system.
Do Not Use in High-Impact Grinding:
While alumina balls are excellent for grinding, avoid using them in high-impact grinding applications where steel balls might be more suitable.
Check for Surface Defects:
Before use, inspect the balls for surface defects such as cracks, chips, or irregularities that could affect performance.
Use in Suitable Equipment:
Ensure the equipment (e.g., ball mills, bearings) is designed to handle ceramic balls and their specific properties.
Monitor Wear in Grinding Applications:
In grinding applications, regularly monitor the wear of alumina balls and replace them when they become too small or worn to maintain efficiency.
Exhibition & Partner
Case
Ship to UAE
Ship to Netherland
FAQ
What are alumina ceramic balls made of?
They are made from aluminium oxide (Al₂O₃), a high-purity ceramic material known for its hardness and wear resistance.
What are the key properties of alumina ceramic balls?
High hardness, excellent wear resistance, chemical stability, high-temperature resistance (up to 1600°C), and electrical insulation.
What are alumina ceramic balls used for?
They are used as grinding media, bearing components, valve balls, and in applications requiring wear resistance and chemical inertness.
Why choose alumina balls over steel or other ceramics?
They offer superior wear resistance, chemical stability, and are lighter than steel, making them ideal for specific applications.
What sizes are available for alumina ceramic balls?
Sizes typically range from 1mm to several inches, depending on the application.