Agglomeration Technology: Mechanisms

Powder agglomeration is used in a wide variety of the chemical process industries, and a virtually endless number of process options are available. Selection requires engineers to make a substantial number of design decisions, such as the choice between wet or dry processing, the intensity of mixing...

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Bibliographic Details
Published in:Chemical Engineering 2010-03, Vol.117 (3), p.34-39
Main Author: Ennis, Bryan J
Format: Magazinearticle
Language:English
Subjects:
Chemical engineering
Chemical process industries
Deformation
Design
Selection
Viscosity
Online Access:Get full text
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Summary:Powder agglomeration is used in a wide variety of the chemical process industries, and a virtually endless number of process options are available. Selection requires engineers to make a substantial number of design decisions, such as the choice between wet or dry processing, the intensity of mixing and shear rates, continuous versus batch operation, cross contamination of products and ease of cleaning. Agglomeration processes can be loosely broken down into agitation and compression methods. Agglomeration by agitation will be referred to as wet granulation. In the second approach of agglomeration by compression, or compaction, a powder blend is fed to a compression device that promotes agglomeration due to large, applied compaction pressures. The choice of agglomeration equipment is subject to a variety of constraints. Agglomerate porosity is a very important consideration in that it impacts strength and attrition resistance, hardness, internal surface area, reactivity and dissolution rate.
ISSN:0009-2460
1945-368X