Mixing and Blending of Solids

Originally delivered Oct 30, 2013
Developed by: AIChE
  • Type:
    Archived Webinar
  • Level:
  • Duration:
    1 hour
  • PDHs:

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Mixing and blending of solids is a very common unit operation across a wide range of industries from pharmaceutical tabletting operations to foodstuff manufacture to ordered mixtures for plastic granules. This webinar provides an introduction to both the fundamentals of mixing processes and how to assess mixture quality and examine the qualities of industrial powder mixing equipment.  Segregation of particulate solids is examined in detail; for if we understand how things separate by particle property (size, density, etc.) and physical mechanisms then processes can be designed to create particle mixtures. As for all mixing processes, it is important to understand the scale of scrutiny for solids mixtures.  Hence, proper sampling (both sampling method and sample size) must be used to determine the “mixedness” of a given blend of bulk solids. The combination of the segregation potential of a desired mixture and the desired mixture quality are key factors in industrial mixer selection. The webinar examines  the characteristics of some of the more common mixers in the process industries, for example, ribbon, inclined screw, hopper blenders, etc.


Karl V. Jacob

Karl V. Jacob is Research Scientist/Technical Leader in Engineering Sciences at The Dow Chemical Company. He is also founder of the Solids Processing Lab at Dow in Midland, Michigan. For the last three decades, he has worked on a vast array of particle technology problems, with particular expertise in silo/hopper design, powder mechanics, pneumatic conveying, particle engineering and drying.   Karl Jacob is a chemical engineering graduate of Case Western Reserve University. He is a former member of the AIChE Board of Directors and a past chair of the Particle Technology Forum.Read more

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