Particle Segregation

Segregation mechanisms, solutions to common problems. Lecture 5 in our main solids flow series.

About this Course

The basics of solids flow

Lecture 5

Segregation of particles is a major problem in many industries such as pharmaceuticals, roofing shingles, and even batteries.  In Lecture 5, Particle Segregation-segregation mechanisms, solutions to common problems, we provide a detailed discussion of the mechanisms that cause segregation or separation of particles.  Additionally, solutions to common segregation problems are discussed.

Topics covered in this lecture include sifting and fluidization segregation along with segregation effects of flow through chutes and transfer points.  Several examples of each mechanism are discussed in detail with examples of common problems and solutions to those problems.


We describe sampling techniques to be aware of and their affect on segregation.  We also discuss several approaches to solving typical segregation problems such as, changing your process, changing your material or changing your equipment to minimize the effects of segregation.  A unique approach to solving segregation problems known as a “cone-in-cone” design is described.

 The online video class is given along with handouts of the presentation and a quiz that will help to ensure your complete understanding of the concepts. Upon purchase of the course you will have 3 days to view the course before your access expires.


Design Principles for Reliable Flow


  • Introduction
  • Slide Handout
  • Lecture
  • Quiz

About Your Instructor

Joe Marinelli

Joe Marinelli

Senior Consultant

Joseph Marinelli, the founder of Solids Handling Technologies, Inc. in Rock Hill, SC is a bulk materials handling expert who has taught hundreds of highly acclaimed engineering seminars.  Since 1972, he has been active in testing bulk solids and consulting on materials handling systems design.  With Jenike & Johanson, Inc., world-renowned experts on solids handling, Mr. Marinelli received his Bachelor of Science degree in Mechanical Engineering, from Northeastern University in Boston, MA.

Mr. Marinelli has also worked for manufacturers of solids handling equipment, such as feeders and silos.  This background provides a unique blend of consulting and manufacturing experience to solve solids flow problems.

He lectures frequently, teaching courses on solids flow principles and flow property testing, and has authored several papers and an encyclopedia section on the subject.  Since 1997, he has been involved with very popular seminars at the University of Wisconsin in the areas of bin and feeder design and solids flow property testing.  He is also a columnist (“Powder Perspectives”) for the website,


Sifting Segregation


Causes of Segregation

Particle Entrainment

Material Sampling

Minimizing Segregation


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