High-strength activated alumina is a porous, high-dispersion solid material belonging to the category of chemical alumina. Characterized by uniform particle size, smooth surface, high mechanical strength, and strong hygroscopicity, it maintains structural stability without swelling or cracking after water absorption. It is non-toxic, odorless, and insoluble in water and ethanol, with excellent thermal stability and regenerability (regenerated by baking at 400-500K) .
Key Properties and Specifications
Physical and Chemical Characteristics
- Appearance: White spherical porous particles with a large specific surface area and microporous structure.
- Mechanical Strength: High mechanical strength ensures durability in industrial applications.
- Adsorption Capacity: Exhibits strong adsorption for water and harmful substances like fluoride (fluoride adsorption capacity up to 2.1 mg/g).
- Drying Performance: Achieves dew points as low as -60°C to -70°C under specific operating conditions, suitable for deep drying of gases and liquids.
Common Sizes
Available in particle sizes including 0.5-1mm, 1-2mm, 1-3mm, 3-5mm, 5-7mm, etc., to meet diverse industrial needs.
Applications
High-strength activated alumina is widely used across multiple industries due to its versatile properties:
- Adsorbents & Desiccants: Used in air dryers, PSA (Pressure Swing Adsorption) systems, and gas/liquid drying in oxygen production, textile, and electronics industries .
- Water Purification: Effective for fluoride removal in drinking water and industrial wastewater treatment .
- Catalysts & Catalyst Carriers: Serves as a catalyst or carrier in petrochemical and fertilizer production due to its surface activity and stability.
- Other Uses: Deacidification regenerant for transformer oil, deodorant, formaldehyde remover, and filler in industrial processes.
Storage and Handling
- Packaging: Typically packed in 25kg woven bags or 50kg plastic bags; small packages (e.g., 50g, 100g) are also available.
- Storage: Keep in a dry indoor environment and avoid opening packages before use to prevent moisture absorption.
Conclusion
High-strength activated alumina is a critical industrial material valued for its adsorption, catalytic, and drying capabilities. Its broad applications, regenerability, and reliability make it indispensable in modern chemical, environmental, and manufacturing processes.
