Our business has changed since we began in 1938, but one thing still holds true: Our industrial mixers are custom designed and fabricated to match your specific application...the perfect blend of science and art. Providing global mixing solutions in the food, plastic, mineral, chemical and biomass industries, Marion isn’t just the leader, we are the industry standard. And we intend to stay that way.

When it comes to industrial mixers, Marion wants to share its expertise so that you can make informed decisions for your application. After all, your mixer will be with you for decades—just like Marion.

You’ll find below the basics on choosing a mixer. If you want to go deeper into your knowledge of mixers, download our comprehensive Industrial Mixer Handbook.



It's a Marion: And it's all about you


The Marion design is driven by our experience in working with thousands of process mixing applications over the course of our 80-year history. Every machine is handcrafted, and every Marion teammate possesses a deep knowledge of the industry, so we can make sure that every machine creates distinct and superior value for our customers. Marion maintains its manufacturing, service and testing facilities in Marion, Iowa, and attracts top talent to serve you with excellence as our hallmark.

Marion’s reputation is founded on the quality of our custom mixers—because over the long run, superior value leads to exponential savings over the lifetime of the mixer. Our team of highly skilled Sales Champions (your project advocate), engineers and network of world-class manufacturer reps listens to your needs, providing you with expert advice. Ribbon or paddle, carbon or stainless, batch or continuous, each mixer is individually handcrafted at our facility in Marion, Iowa. We invite you to see our value firsthand. Options on our mixers include:

  • Sizes ranging from 1.5 to 600 cubic feet
  • Batch or continuous
  • Mill finish to ra22 (#180)
  • 3-A Authorized available
  • Stainless or carbon steel
  • Paddle, Ribbon or Hybrid solid shaft agitators
  • Jacketed options for heat or cool
  • Pressure or vacuum

Read on below for how you can prepare yourself for choosing the perfect mixer.



Model # Mixing Capacity/cu. ft. Inside Diameter Inside Length Overall Width Overall Length Overall Height
1224 1.5 12" 24" 25" 52" 20"
1824 3.5 18" 24" 25" 52" 27"
2436 10 24" 36" 32" 66" 34"
2748 15 27" 48" 36" 78" 38"
3048 20 30" 48" 39" 81" 41"
3648 30 36" 48" 46" 93" 48"
3672 45 36" 72" 46" 117" 48"
3696 60 36" 96" 46" 142" 48"
4272 60 42" 72" 52" 122" 54"
4296 80 42" 96" 52" 146" 54"
42120 100 42" 120" 52" 170" 54"
4872 65 48" 72" 59" 122" 60"
4896 90 48" 96" 59" 146" 60"
48120 110 48" 120" 59" 170" 60"
5472 100 54" 72" 64" 122" 66"
5496 133 54" 96" 64" 146" 66"
54120 166 54" 120" 64" 170" 66"
54144 200 54" 144" 64" 194" 66"
54168 232 54" 168" 64" 218" 66"
54192 266 54" 192" 64" 242" 66"
72120 300 72" 120" 85" 202" 88"
72144 360 72" 144" 85" 226" 88"
72168 420 72" 168" 85" 250" 88"
72192 475 72" 192" 85" 274" 88"
72240 600 72" 240" 85" 298" 88"


Continuous Through-Put Based on Free Flowing Materials (CFH)

        1 Minute Residence 2 Minute Residence 3 Minute Residence
Model # Volumentric Capacity (Cu ft.) Inside Diameter Inside Length Min Level Max Level Min Level Max Level Min Level Max Level
1254 3 12" 54" 45 180 23 90 15 60
1854 7 18" 54" 96 378 48 189 24 94
2472 15 24" 72" 127 506 63 253 42 169
2796 26 27" 96" 390 1560 195 780 130 520
36120 58 36" 120" 870 3480 435 1740 290 1160
42144 95 42" 144" 1425 5700 713 2850 475 1900
54192 204 54" 192" 3060 12240 1530 3120 1020 408
72240 453 72" 240" 6749 26996 3375 13498 2250 8999

Choosing the best mixer for your needs

Marion Mixer

When choosing a mixer, there are a multitude of considerations, and every application is different, but some considerations apply to everyone:

  • First, an analysis of your needs creates the foundation of the project. Below, we discuss the three areas for creating the first draft of your mixer needs.
  • Next, you’ll want to look at the throughput of the mixer. Generally, customers ask about continuous mixing because of the fast throughput, but for applications with precision mixing requirements, batch or continuous batch process are better options. Check out the details below.
  • The mixer isn’t the only piece of machinery in your process. Choosing the right mixer requires integrating seamlessly with other equipment, and that’s where we go deeper into inflows and outflows.
  • Finally, there’s sanitation. For the food and pharmaceutical industries, sanitation is priority number one. Every Marion mixer meets the highest sanitary standards. The final section of this webpage gives more details on just what it means to experience food-grade sanitation from your mixer.

What are you trying to solve? Mixer needs analysis


The first step in choosing a mixer for your production line is to do a needs analysis. The three areas to consider are:

  1. Materials. Define the types of materials you are mixing, and the quality and precision needed from the mix. Foods and other consumables need very high accuracy to maintain consistent taste, texture and nutritional value. Materials also can have different consistencies and weight constraints. The material will determine whether you need a ribbon mixer, paddle mixer or hybrid.
  2. Site specifications. It’s important to know the type of space you have available for the mixer (both vertical and horizontal), and to do a careful analysis of the upstream and downstream processes. Full-site analysis will allow you to make a better buying decision.
  3. Sanitation. Keeping it clean relates both to the inside of the mixer and to the surrounding area. Choose equipment that meets all the sanitation requirements for your materials, and don’t get confused between 3-A Authorized and any other type of terminology. Only 3-A Authorized machines have passed the 3-A requirements.


Making it through: Batch mixers and continuous mixers


Typically, manufacturers are concerned about the speed of throughput for their mixers, so we get a lot of requests for continuous mixers, but the truth is that continuous mixing is appropriate for mixes that don’t require a high level of consistency and have fewer than three items in the mix. In fact, for foods and nutraceuticals, batch mixers allow the control that’s absolutely necessary. If someone will be smelling or tasting the final product, there’s no room for variation in the final product.

That’s why Marion has developed expertise in continuous process batch control mixing. Using continuous process batch control mixing is the ideal way to maximize throughput without compromising on quality and precision of the mix.

In continuous process batch control, the hoppers are filled while the previous mix is in the mixer, and then as soon as the mixer is emptied, the next batch is immediately fed into the batch mixer. This process combines the precision of batch with some of the speed of continuous mixing. Manufacturers who want high throughput and high accuracy should consider this option. Continuous process ensures the equipment is at maximum throughput, while providing precision control through batch loading.

Up, down and all around: Loading and unloading the mixer

Loading the mixers can end up as the limiting factor when it comes to determining cycle time. If a mixer is being hand loaded, it should be configured for easy loading to reduce the chance of injury. Bulk bag unloaders or feeders require headspace or conveyer space, so it’s important to do a site survey and account for those needs.

Downstream, slow output may also be a choke point when it comes to the throughput of the mixer. Configurations for rapid discharge can choose options such as a knife gate or roller side gate. However, if the unloading is onto a conveyer, the system needs to leverage a controlled valve that meters out the mix at a rate dictated by the conveyer. A variety of metered valves are available, including slide valves, ball valves and iris valves.

Finally, when considering the right discharge valve, some applications require removable valves for pristine sanitation. When working with degradable materials, pharmaceuticals or foods, manufacturers will want to be able to remove and thoroughly clean the valves as required or when switching from one mix recipe to another.

Food industry: keeping it clean


Consumers and regulators have upped the game when it comes to sanitary design and processing of foods. Manufacturers simply cannot afford the blow to their reputation associated with product recall or litigation. Choosing 3-A Authorized sanitary mixers is the right way to go. If it says “compliant” or “certified” you can be pretty sure it’s not authorized. Marion has the only 3-A Authorized horizontal mixer on the market today.

Going deeper into sanitation, the underlying questions are:

People who do the cleaning shouldn’t need mechanical or technical backgrounds to be competent to clean and inspect a machine. That means sanitary mixers shouldn’t have any hidden niches or points where residue can accumulate and remain unseen.

TAP INTO THE MARION ADVANTAGE: Whether you are in the early planning stages, or prepping for an immediate project, we can help. Connect with us.