What is the relationship between activated alumina powder and activated alumina granules? After purchasing activated alumina powder, can it be directly processed into activated alumina granules?
The answer is: activated alumina powder can be used as an important raw material for producing activated alumina granules, but it is not possible to obtain qualified products simply by pressing the powder into granules. From powder to granules, processes such as batching, mixing, forming, drying, calcination, and screening are also required. The adsorption performance, mechanical strength, pore structure, and abrasion resistance of the final granules are all related to the raw materials and production process.
What Is the Difference Between Activated Alumina Powder and Activated Alumina Granules?
The simplest way to understand it is: activated alumina powder is more of a powdered raw material, while activated alumina granules are products that have been further processed and formed.
Activated alumina powder has a certain specific surface area and pore structure, and can be further processed into spherical, cylindrical, strip-shaped, or other forms of products according to different production processes.
What Processes Does Activated Alumina Powder Need to Go Through to Produce Granules?
Generally speaking, activated alumina powder cannot directly become qualified granule products and needs to go through certain processing processes.
First is raw material batching and mixing. According to the performance requirements of the final granules, activated alumina powder and related auxiliary materials are reasonably proportioned so that the raw materials have suitable properties for subsequent processing.
Next is forming. According to the shape and size of the final product, the corresponding forming method can be used to process the powder into spherical, cylindrical, strip-shaped, or other forms.
After forming, drying and calcination are also required. This process will further affect the pore structure, mechanical strength, and final use performance of the granules.
Finally, screening and packaging are also required to classify products according to different particle sizes.
Therefore, from activated alumina powder to activated alumina granules, it is not simply a "pressing process," but a production process that requires control of multiple stages.
Why Is Not All Activated Alumina Powder Suitable for Producing Granules?
This is an issue that is very easily overlooked during purchasing.
Many customers believe that as long as the product is called "Activated Alumina Powder," it can be used to produce activated alumina granules of any specification. In fact, the properties of different powders may vary, and different granule products also have different requirements for raw materials.
For example, a company needs to produce high-strength activated alumina granules. If the forming performance of the powder does not match the production process, even if granules can ultimately be produced, problems such as insufficient mechanical strength, high abrasion, or a pore structure that does not meet the requirements may occur.
For another example, if a customer needs to produce alumina granules for use as a catalyst support, parameters such as specific surface area, pore volume, and pore size may be more important.
Therefore, when selecting powder, you should not only look at the price, but more importantly, look at whether the performance of the powder is suitable for the production requirements of the final granules.
What Granule Products Can Be Produced from Activated Alumina Powder?
According to different forming processes, activated alumina powder can be further processed into products in different forms.
For example, common ones include:
Spherical activated alumina granules
Suitable for industrial gas drying, adsorption, and some other industrial applications.
Cylindrical or strip-shaped alumina supports
Commonly used in areas such as catalyst supports.
Activated alumina granules with different particle sizes
Different sizes of granules can be produced according to equipment and process requirements, such as 3–5 mm and 4–6 mm.
Therefore, when purchasing powder, it is best to determine the size and application of the final granule product in advance.
Zibo Xiangrun Environmental Engineering Co., Ltd. focuses on the production and supply of alumina materials and can provide activated alumina powder and related alumina products according to customers' different industrial applications. If you are preparing to use activated alumina powder to produce granules, catalyst supports, or other alumina products, you can send us your final product specifications, application, target parameters, and purchase quantity, and we can further discuss suitable activated alumina powder according to your actual requirements.
