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Mixing

Agitating Fibrous Materials

June
2010
Back To Basics
Gregory T. Benz
Slurry agitation involves complicated processes. This article presents guidelines for understanding the rheology of cellulosic and other fibrous materials, and outlines a method for scaling up their agitation.

Determining Torque Split for Multiple Impellers in Slurry Mixing

February
2012
Fluids and Solids Handling
Gregory T. Benz, P.E.
Yield-stress slurries, such as those used in paper, biofuel, and polymer production, can be difficult to mix. This article explains how to determine torque requirements for multiple-impeller slurry-mixing systems to optimize tank geometry and...

Industrial Fluid Mixing for Engineers

eLearning (online) Course
This course covers fundamentals in mixing theory including a section on scale-up, practical applications to mixing technology and advanced topics such as solid-liquid process. Engineers gain an excellent understanding of the fundamentals of mixing and how to apply the right technology to the mixing process.

Fluid Mixing Technology for Operators

eLearning (online) Course
Starting with the fundamentals (the basic principles of mixing), this course continues with practical applications to mixing technology, and ends with advanced topics such as solid-liquid processes. Operators will gain an excellent understanding of mixing theories and how they work in today's mixing technology without getting too product specific.

Industrial Fluid Mixing

In-Company Training
Given the vital role industrial fluid mixing plays in the success of so many products, it pays to stay on top of the most recent developments in the field, the newest equipment and emerging design concepts. Join industrial fluid mixing expert W. Roy Penney as he brings you up-to-date on cutting-edge improvements in these areas that lead to greater efficiency, cost savings and a more robust bottom line.

Find Mixing Success through Failures - Part 1

October
2008
Fluids and Solids Handling
David S. Dickey, Gary K. Patterson
Understanding when and why mixing fails in the laboratory is often the only way of avoiding a similar failure in a production-scale reactor.

Optimize Mixing by Selecting the Proper Baffles

February
2002
Fluids and Solids Handling
Julian B. Fasano, Kevin J. Myers, Mark F. Reeder
It is common knowledge that baffles promote better flow in an agitated vessel, but how to apply them and what kind to use take some ingenuity.

How to Scale-Up Mixing Processes in Non-Newtonian Fluids

May
2003
Fluids and Solids Handling
Christopher Henry , Robert J. Wilkens,  Lew E. Gates
This article will describe the relationships that must be understood to scale-up fluid mixing processes in non-Newtonian, power-law fluids. The principles described apply to both close-clearance impellers, such as anchors and helixes, and to open...

Designing Suspension-Mixing Systems

January
2006
Fluids and Solids Handling
Frantisek Rieger, Pavel Ditl
Impeller and vessel geometries are key factors in selecting mixing equipment to efficiently suspend particulate solids in slurries

Understand Temperature Change in Process Stream Mixing

September
2006
Heat Transfer
Anil K. Mehrotra, Dharmendra Tiwary
The isobaric and adiabatic mixing of process streams can yield an outlet stream temperature that is either in between, higher than, or lower than the inlet stream temperatures. This article uses simulation to explore temperature-change scenarios in...

High-Shear Mixers: Still Widely Misunderstood

November
2007
News Feature
Suzanne Shelley
Advanced modeling techniques and improved geometric features are helping designers and users of rotor-stator mixers to demystify these complex devices, and get more consistent predictable results.

Find Mixing Success Through Failures - Part 2

December
2008
Fluids and Solids Handling
David S. Dickey, Gary K. Patterson
Understanding when and why mixing fails in the laboratory is often the only way of avoiding a similar failure in a production-scale reactor. Here we examine mixing in stirred-tank reactors and provide guidance on scale-up.

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