Product Description
In industries where durability and longevity are paramount, high-wear alumina media sintered for maximum density and longevity emerges as a game-changer. This advanced material offers exceptional wear resistance, making it indispensable in sectors like mining, cement, and chemical processing.
High-wear alumina media is a type of advanced ceramic material known for its remarkable hardness and resistance to wear and corrosion. It is produced through a process called sintering, where alumina powders are compacted and heated to form a dense, solid mass. This process enhances the material's structural integrity, making it ideal for applications requiring high durability.
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Exceptional Hardness: High-wear alumina media boasts a hardness level that significantly surpasses traditional materials like steel. This makes it highly resistant to abrasion and wear, ensuring a longer lifespan in industrial applications.
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High Density: Sintering results in a highly dense material, which contributes to its mechanical strength and durability. This density is crucial for withstanding high-pressure environments and maintaining performance over time.
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Thermal Stability: The material exhibits excellent thermal stability, allowing it to perform reliably in high-temperature applications without losing its structural integrity.
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Chemical Resistance: High-wear alumina media is resistant to chemical corrosion, making it suitable for use in harsh chemical environments where other materials might degrade.
High-wear alumina media finds applications across various industries due to its superior properties:
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Mining and Aggregates: Used as wear linings in mining equipment, alumina media protects surfaces from abrasion and extends the life of machinery. It is particularly effective in handling hard materials that are tough on equipment.
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Cement Industry: In cement processing, high-wear alumina media is used to line grinding mills, ensuring efficient material processing and reduced downtime due to equipment wear.
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Chemical Processing: Its chemical resistance makes it ideal for use in reactors, pipelines, and other equipment exposed to corrosive substances.
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Power Generation: In coal-fired power plants, alumina media serves as a wear-resistant liner, protecting equipment from the abrasive nature of coal.
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Extended Equipment Lifespan: The wear resistance of alumina media significantly extends the lifespan of industrial equipment, reducing the need for frequent replacements and maintenance.
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Improved Efficiency: By maintaining the integrity of equipment surfaces, alumina media enhances material flow and reduces energy consumption, leading to more efficient operations.
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Cost-Effectiveness: Although the initial investment may be higher, the extended lifespan and reduced maintenance costs associated with alumina media make it a cost-effective solution in the long run.
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Noise Reduction: The use of alumina media in equipment can help reduce operational noise, contributing to a safer and more pleasant working environment.
●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 | |
1. 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).
2. 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.
- Outperforms silica sand in wear & consistency.
3. Grinding Efficiency
- Particle Size Reduction: Achieves sub-micron fineness (D50 < 1µm) in wet/dry mills.
- Speed: Higher density (vs. silica) improves kinetic energy transfer.
- Consistency: Uniform shape/size prevents clogging in bead mills.
Best For:
- High-purity materials (e.g., ceramics, electronics powders).
- Slurry processing (paints, dyes).
4. 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). |
5. 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.
Need Custom Alumina Balls?
We supply:
- Sizes: 1mm–50mm (±0.01mm tolerance).
- Grades: 92%, 95%, 99%, ZTA-composite.
- Certifications: ISO 9001, RoHS, FDA (for pharma).
●Package:
25KG/woven bag,1000KG-1250KG for one pallet with shrink wrapped
Factory equipment
Exhibition & Partner
Case
Ship to UAE
Ship to Netherland
FAQ
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What are alumina ceramic balls made of?
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What are the key properties of alumina ceramic balls?
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High hardness, excellent wear resistance, chemical stability, high-temperature resistance (up to 1600°C), and electrical insulation.
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What are alumina ceramic balls used for?
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They are used as grinding media, bearing components, valve balls, and in applications requiring wear resistance and chemical inertness.
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Why choose alumina balls over steel or other ceramics?
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They offer superior wear resistance, chemical stability, and are lighter than steel, making them ideal for specific applications.
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What sizes are available for alumina ceramic balls?
Guangzhou Zoli Technology Co.,Ltd.
Guangzhou Zoli Technology Co., Ltd. specializes in the
development and production of high-performance metallic and
non-metallic materials, as well as cutting-edge nanotechnology
solutions for precision grinding and material processing. With a
strong foundation in innovative grinding and milling technologies,
we have established ourselves as a leader in the field of precision
particle size reduction and material processing.
Zoli Currently operates two state-of-the-art R&D and
manufacturing facilities located in Guangzhou, employing over 60
skilled professionals and covering a total production area of more
than 6,000 square meters. Our product portfolio includes advanced
milling equipment designed for applications in materials science,
pharmaceuticals, ceramics, metallurgy, and nanotechnology. They are
widely utilized across a diverse range of industries, including
renewable energy, telecommunications, consumer electronics, and
biomedical devices.
At our core, we are committed to delivering high-performance,
reliable, and innovative milling solutions that meet the evolving
needs of our customers. By combining superior engineering with a
customer-centric approach, we strive to build long-term
partnerships and contribute to the advancement of material science
and technology worldwide.
