Scale-up of Agitated Centrifugal Mixers

Two common approaches are used for scaling these mixers  

Keep the peripheral speed constant between the pilot mixer and the full scale mixer. 

Note that each of these approaches is used by mixer equipment manufacturers, and this suggests that more research and development are required to increase our understanding of solids mixing processes. 

It is a common practice to use a Froude number of 7 for mixing nonfriable materials. For friable materials, the effect of agitator impact on breakage must be evaluated. Attrition is nonlinear with impact velocity, whereas it is linear with mixing time. Therefore, an optimum can be found through experimentation. 

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How do the mixing quality and power consumption change with mixer rpm 15-12.2 Scale-up of Agitated Centrifugal Mixers... 

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