Activated Alumina Agglomeration

Activated Alumina Agglomeration

ACTIVATED ALUMINA AGGLOMERATION

Nowadays the use of activated alumina is increasing day by day. It will have hype in the market in the near future. Because it has a lot of purposes. Depending on the intended end use of the activated alumina, agglomeration is also often desirable. This is especially true when working with adsorbents and catalysts.

The activated alumina is safe and inactive. Therefore it is safe to keep somewhere. But it should be in a tight packing because it will start to absorb moisture while it is exposed to the atmosphere. The agglomeration of activated alumina allows for a high level of customization for specific application requirements. Characteristics that are often controlled through agglomeration include:

• Particle size distribution
• Bulk density
• Crush strength
• Amount of attrition/potential for dust generation
• Flowability
• And more

There are many ways to produce activated alumina “beads,” as they are often called, with some options including the use of an agglomerator, pin mixer, disc pelletizer, or combination thereof.

DESICCANT

Similar to its role as an adsorbent, activated alumina can also adsorb water from the air, allowing it to be used as a desiccant; activated alumina can absorb and hold water in order to maintain things dry,  such as silica gel. As a desiccant, activated alumina can adsorb up to 20% of its own weight in water at a relative humidity of 50%.

Activated alumina is employed as a desiccant in a wide variety of applications, including the removal of water vapor from gases in industrial settings. By thermal treatment, the absorbed water onto the activated alumina can then be desorbed.  In this way, the activated alumina can be reused.

ACTIVATED ALUMINA APPLICATIONS

Much like activated carbon, the high surface area and porosity exhibited by activated alumina allow it to capture and hold on to various types of materials, lending it to be employed as an adsorbent, desiccant, and more.