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Comment PDF Solids Handling

Characterizing Powder Flow

By Tim Freeman, Freeman Technology Ltd. |

To confidently design, operate and troubleshoot solids-handling processes, engineers need to characterize powder flow in ways that relate to in-plant behavior. Universal powder testers provide the multi-faceted characterization that is necessary to reliably predict operational performance. This article examines the data that such instruments generate, and discusses their practical application. While many process engineers would express confidence in their ability to effectively design and optimize plants for liquid and gas processing, even those with extensive experience are often challenged by powder-handling processes. The open literature offers only limited data and the links between actual process behavior and defined powder properties often appear tenuous and complex. However, for effective processing and design, it is essential to describe powder behavior in a process relevant way. Dynamic flow characterization measures powders in motion, offering engineers an intuitively rational approach to characterization. The most advanced dynamic powder testers incorporate a range of methodologies, characterizing conventional bulk and shear properties to supplement dynamic measurement. Since powders can be measured in a consolidated, conditioned,…
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