25kg NETZSCH White Alumina Grinding Balls Media 1mm-50mm
Price:
Negotiable
MOQ:
1kg
Delivery Time:
within 15 days
Brand:
Zhongli
Product Description
25kg NETZSCH White Alumina Grinding Balls Media 1mm-50mm
Specialized alumina grinding balls designed for pigment processing and other high-precision grinding applications, ensuring color-free contamination in coatings and paints.
Key Features and Benefits
- High-purity alumina composition for contamination-free grinding
- Exceptional wear resistance and hardness (Mohs 9)
- Chemical inertness suitable for pH 1-14 environments
- Thermal stability up to 1,600°C
- Available in precise sizes from 1mm to 50mm
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 Comparison
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
- 2-5x longer lifespan vs. steel in abrasive slurries
- Harder than zirconia but less tough (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) |
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) |
Packaging Information
25KG/woven bag, 1000KG-1250KG for one pallet with shrink wrap
Frequently Asked Questions
1. 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.
2. 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.
3. 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.
4. 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.
5. What sizes are available for alumina ceramic balls?
Sizes typically range from 1mm to several inches, depending on the application.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Guangzhou Zoli Technology Co.,Ltd.
Location
Room 702A, No. 585, Airport Road, Tangjing Street, Baiyun District, Guangzhou City, Self-compiled 2341
Contact Person
Ain Qiu