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Description:  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.  Segregation of particles is a major problem in many industries such as pharmaceuticals, roofing shingles, and even batteries.

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.

Lecture includes downloadable class notes and a self administered quiz with answer sheet.  The seven-day subscription allows you to watch and review this video class as many times as you need.
 

  Lecture 2:  Design principles for reliable flow - wall friction, flow functions, bin design parameters

  Lecture 3:  Feeders, both volumetric and gravimetric - volumetric screws, belts, rotary valves, plus
                    gravimetric & loss-in-weight feeders 

  Lecture 4:  Measuring bulk solids flow properties - shear testing, variables that affect properties

  Lecture 5:  Particle segregation - segregation mechanisms, solutions to common problems

  Lecture 6:  Flow aid devices - assistance to gravity flow, air blasters, vibration & fluidization
                    techniques

  Lecture 7:  Hopper retrofits to existing systems - cones vs. wedges, hopper liners & special
                    inserts

  Lecture 8:  Design examples - determining hopper geometries using the Jenike approach
                    (Available January '10)