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99% AL₂O₃ Inert Alumina Ceramic Ball
The 99% AL₂O₃ inert alumina ceramic ball is a high-purity, high-strength ceramic media manufactured from premium alumina powders and fired at high temperature. It is widely used as catalyst support media, random packing and protective layers in chemical towers, reformers, gas treatment units and other high-temperature, corrosive industrial environments. The product delivers excellent thermal stability, low water absorption, strong resistance to acids and alkalis, and outstanding mechanical strength.
Alumina ceramic grinding balls are high-performance media designed for use in catalyst support, tower packing, and grinding applications. Manufactured from high-purity alumina oxide, these balls provide excellent hardness, low wear rate, and reliable chemical stability.
Alumina oxide balls are widely applied in petroleum refining, fertilizer plants, natural gas processing, and environmental protection industries. Their resistance to high temperature, pressure, and corrosive chemicals makes them ideal for long-term use in demanding industrial environments.
As a versatile material, the alumina ball not only ensures efficient catalyst protection and uniform fluid distribution but also serves as a durable grinding medium in ceramic, chemical, and mineral industries.
Key Applications
- Catalyst support & catalyst bed protection in petroleum refining and petrochemical units
- Random packing and tower filling for gas and liquid contactors
- High-temperature reformers and ammonia synthesis support layers
- Natural gas treatment, desulfurization and environmental protection installations
- Fluid distributor and support media in various catalytic reactors
Chemical Composition
| Component | Typical Content |
|---|---|
| Al₂O₃ (Alumina) | ≥ 99.0% |
| SiO₂ (Silica) | < 0.1–0.2% |
| Fe₂O₃ (Iron oxide) | < 0.1–0.2% |
| Other impurities (MgO, CaO, TiO₂, Na₂O, K₂O) | Trace |
Physical & Performance Properties
| Property | Typical Value / Range |
|---|---|
| Bulk / Apparent Density | ≈ 1.9 – 2.2 g/cm³ |
| True Density | > 3.6 g/cm³ |
| Water Absorption | ≤ 4% (typically very low) |
| Maximum Service Temperature | ~1550 – 1650 °C (higher grades available) |
| Mechanical Strength | High; low friability, excellent crush resistance |
| Chemical Resistance | Excellent vs. acids, alkalis and most organic solvents |
| Thermal Shock Resistance | Good — stable under rapid temperature changes |
| Mohs Hardness | ~8 – 9 |
Available Sizes & Tolerances
Standard diameters (mm): 3, 6, 9–10, 13, 19, 25, 38, 50. Custom sizes and tighter tolerances are available on request.
Main Features & Benefits
- High purity (≥99% Al₂O₃) — minimizes contamination and prevents catalyst poisoning.
- Superior thermal stability — suitable for extreme high-temperature applications.
- Excellent chemical inertness — resists acids, alkalis and common solvents.
- Low water absorption & low porosity — reduces unwanted adsorption and phase change effects.
- High mechanical strength — long service life under fluid flow and loading conditions.
- Versatile sizing — optimized for different layers in packed beds and distributor systems.
Typical Uses & Installation Notes
- Use as a top/bottom support or protective layer on active catalyst beds to prevent catalyst loss and erosion.
- For packed towers, select size distribution to control packed bed pressure drop and flow distribution.
- When the process is extremely silica-sensitive or requires ultra-low impurities, verify trace element specifications before purchase.
- Avoid high-impact loading during handling and installation to prevent surface chipping.
Packing & Shipping
Standard packing options:
- Woven bags (inner plastic liner) on pallets
- Bulk big-bags (FIBCs) for tonnage shipments
- Wooden crates or steel drums for smaller or high-value batches
Custom marking, material certificates and packaging tailored to international shipment requirements are available on request.