How To Choose An Industrial Mixer

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How To Choose An Industrial Mixer

Being underwhelmed is bad, but when you're looking for equipment, nothing is worse than being overwhelmed. When it comes to industrial mixers, there are so many models to choose from. How do you decide? 

Here is how to choose an industrial mixer, you should pay attention to the container capacity you'll need, the type of liquid viscosity you'll be using, the torque requirements you have, your horsepower requirements, the rotational speed and the diameter of the mixing propeller, the type of mixing cycle you'll need, as well as the type of power supply that will work best for you.

By asking yourself what you require of the industrial mixer you want, and determining what sort of industrial mixer you'll need, you'll find that choosing the right industrial mixer for you isn't difficult at all.

Here is a more comprehensive and in-depth look at the list of things you should consider when you're looking to buy an industrial mixer.

Mixing Vessel Capacity

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Explore the capacity of your desire mixing vessel. This means that you should identify the application volume, batch height, and the tank height and diameter. This will help you determine if your mixing equipment is suitable for where you will mix your application.

Liquid Viscosity

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When it comes to selecting a mixer, you don't want to purchase a mixer that won't function properly for the types of liquids you are mixing in your application. Different kinds of liquids show different characteristics when being mixed. Before you can determine any of the rest, you'll need to determine what the viscosity of the liquid in your mixing batch will be.

To help get you get started, we've listed out the 4 most common types of behavior by liquids. They are as follows:

Thixotropic Liquids: The viscosity of thixotropic liquids decreases when agitation increases. These include applications such as peanut butter, inks, glue, shortening, tars, and soaps.

Pseudoplastic Liquids: As the shear rate of your mixer increases the viscosity of pseudoplastic liquids will decrease in its viscosity. Typical pseudoplastic liquids include lotions, paints, latex, and gels.

Newtonian Liquids: Regardless of mixing speeds, the viscosity of newtonian liquids will remain constant. These include hydrocarbons, mineral oils, and water.

Dilatant Liquids: As the shear rate increases in dilatant liquid applications the viscosity will increase as well. These include applications like candy compounds, clay, and slurries

Torque

Consider the rotational force you'll require for your mixer's motor. These are typically measured in in lbs. or ounces. Again, it is crucial to be mindful in regards to what sort of liquids you'll be working with.

Horsepower

This is the efficiency that the motor of your mixer requires in regard to the torque and RPMS (revolutions per minute), which can be expressed by:

hp = (in-oz x rpm)/1,008,400

RPM & Impeller Size

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Even a small adjustment in the diameter of the industrial mixer impeller or RPM can dramatically increase the required power for mixing. This can be defined by:

Power ∝ rpm3 x dia5

 

Read our resource on how to choose a mixing impeller here.

 

For mixing applications that require a variation of rpms it is highly recommended to explore equipping the mixer with a controller or vfd (variable frequency drive). A quality controller will feature a digital rpm readout that is pre-programmed and tested for optimum performance.

 

Power Supply

Determine whether a standard electric mixer will be fine, or if you need an air-driven mixer due to the use of electricity being unsafe or impractical in your lab.

 

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Now that you've formulated what you want and need from what you'll be doing with your industrial mixer, finding the right one for you and your lab should be simple.

 

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