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Principles of Agglomeration: Pelletizing Processes

By Chris Kozicki, Ron Eichhorn and Carrie Carlson, FEECO International |

Pelletizing, a tumble-growth agglomeration process, offers many potential benefits to processors handling bulk solid materials. This article provides an overview of how agglomerate pelletizing works and the important elements that must be considered Pelletizing, a form of agglomeration (particle size enlargement) employed to produce a rounded granule, is a valuable operation when working with bulk solids. The technique offers a number of possible improvements to the handling, appearance, application and performance of a wide range of solids materials. The term “pelletizing” is often used interchangeably to refer to various types of agglomeration. This article refers only to pelletizing in terms of tumble-growth agglomeration, which is carried out using a disc pelletizer. As a form of tumble-growth agglomeration, the pelletizing process is highly customizable and can be used to produce a spherical granular product to exacting specifications.The pelletizing process is most often carried out on a disc pelletizer, typically preceded by a preconditioning step in a pin mixer, and followed by a drying step, with additional process steps possible. This article looks at the process of agglomerate pelletizing, including the potential…
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