Powder flow problems can result from environmental conditions, the design of equipment and containers, particle properties like size and moisture and other causes. The issues can impact storage capacity, contribute to caking or agglomeration of material, and lead to other negative outcomes.
To help our audience avoid these problems, Powder & Bulk Solids presents this list of free, informative videos on how to approach and solve powder flow concerns.
Example of Mass Flow and Funnel Flow Discussion
Jenike & Johanson on YouTube
Eric Maynard, a vice president at bulk material engineering firm Jenike & Johanson, demonstrates two different flow pattens that can happen in a bin, hopper or silo – mass flow and funnel flow. Viewers should take note of the discussion on how powder or bulk material flow testing and engineering help determine hopper geometry and the material of construction for hoppers.
Classifying Flow Properties of Solids
Hosokawa Micron Powder Systems on YouTube
This webinar presented by Bill Brown, division manager of the chemicals and minerals group at Hosokawa Micron, discusses the “Carr Indices” of solids flow properties measurement. The properties are organized into two different categories: flowability and floodability. Viewers will learn the history and technical details of the Carr Indices and how the flow properties are assessed.
Flow Properties of Powder
PharmaEtude on YouTube
Those interested in pharmaceutical powders should take a look at this lecture by Jainam Shah of Anand Pharmacy College. The speaker provides an overview of five flow problems that commonly occur with pharmaceutical particulate materials, including excess air in the powder, uneven flow, caking during storage, and powder loss during tableting, encapsulation, or vial filling.
Flow of Solids in Bins, Hoppers, Feeders, and Chutes: Common Flow Problems
AIChE on YouTube
This video by The American Institute of Chemical Engineers features a presentation by Jenike & Johanson’s Eric Maynard on common flow problems in bins, hoppers, and feeders. Issues covered in the segment include ratholing, arching (bridging), erratic flow, flushing, and more.
The Influence of External Variables on Powder Flow
Freeman Technology on YouTube
UK-based powder flow solutions firm Freeman Technology offers this video on how particulate materials react when aerated, loosely packed or consolidated and what steps operations can take to improve the powder’s flowability. The company also explains how powder segregation can cause processing and quality issues.
To view more professional development resources, click here.