High Density Grinding 92% Alumina Grinding Balls 20mm 25mm 30mm
Alumina Warriors: High Density Grinding Balls for Extreme Conditions
In industrial grinding, the choice of media significantly impacts process efficiency. Our high density alumina grinding balls excel in extreme conditions with exceptional hardness, wear resistance, and high-temperature tolerance. Ideal for mining, ceramics, and electronics industries.
What Are High Density Alumina Grinding Balls?
These ceramic balls are made primarily from alumina (Al2O3), featuring a density of 3.6-3.9 g/cm³ and Mohs hardness of 9. Manufactured through dry isostatic pressing and rolling for uniform quality.
Key Features
- High Density: Maximizes impact energy for efficient grinding
- Wear Resistance: Low wear rate reduces downtime and maintenance
- Temperature Resistance: Withstands over 1,000°C for high-temperature applications
- Chemical Resistance: Resistant to acids, alkalis, and corrosive environments
Applications
Mining and Ore Processing: Efficiently grind ores in ball mills, increasing metal yield while minimizing energy consumption.
Ceramics and Electronics: Achieve nano-level precision grinding with minimal contamination for high-purity applications.
Cement Production: Improve grinding efficiency and reduce processing time with superior thermal conductivity.
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 |
|
Features
- High density, high hardness, low wear loss, regular shape
- Impact and corrosion resistant
- 20-40 times more wear-resistant than natural/common balls
- Improves grinding efficiency by 40-60%
Applications
- High hardness/viscosity materials: zircon sand, silicon dioxide, calcite
- Magnetic bands coatings for audio/video tapes
- Paint, coating, pigment, ceramic glaze, titanium dioxide
- Wet grinding including batch mill and continuous ball mill
Package
25KG/woven bag, 1000KG-1250KG per pallet with shrink wrap
Usage Notice
- Keep balls clean and free from contaminants
- Store in dry, clean environment with protective packaging
- Avoid sudden thermal shocks despite high temperature resistance
- Verify chemical compatibility for specific applications
- Never exceed recommended load capacity
- Use proper installation techniques to prevent damage
- Minimize contact with extremely abrasive materials
- Conduct regular inspections for wear or damage
- Avoid heavy impact or shock load applications
- Follow all manufacturer guidelines precisely
Factory Equipment
Exhibition & Partners
Case Studies
Shipment to UAE
Shipment to Netherlands
Frequently Asked Questions
What are alumina ceramic balls made of?
High-purity aluminium oxide (Al₂O₃) ceramic material known for hardness and wear resistance.
What are the key properties?
High hardness, wear resistance, chemical stability, temperature resistance (1600°C), and electrical insulation.
What are they used for?
Grinding media, bearing components, valve balls, and applications requiring wear resistance and chemical inertness.
Why choose alumina over steel?
Superior wear resistance, chemical stability, and lighter weight for specific applications.
What sizes are available?
Range from 1mm to several inches, depending on application requirements.
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