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  • Recommended Particle Sizes of Activated Alumina for Air Dryers

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Recommended Particle Sizes of Activated Alumina for Air Dryers

Activated alumina is a commonly used adsorbent in air dryers. Standard particle sizes range from 0.4–1.2 mm to 6–8 mm, and custom sizes can also be provided based on specific needs. For air dryer applications, 3–5 mm spherical particles are typically selected due to their balance of adsorption capacity and mechanical strength.

From the perspective of adsorption performance: The smaller the particle size of activated alumina, the larger the specific surface area, exposing more adsorption sites and thereby increasing the adsorption capacity (e.g., for water molecules, heavy metal ions, or organic substances).

From the perspective of compressive strength: Larger particle sizes offer higher mechanical strength, making them more suitable for fluidized bed or high-pressure applications, where they reduce attrition and extend service life. In contrast, smaller particles are more prone to abrasion or powdering under intense operating conditions.

Therefore, selecting the appropriate particle size of activated alumina requires a comprehensive evaluation of factors such as target dew point and inlet pressure. With over 30 years of experience in developing and manufacturing adsorbents, JOOZEO can recommend optimal adsorption solutions tailored to customer needs—ensuring performance requirements are met while minimizing operating costs.

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Post time: Jun-16-2025

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