What Is Primary, Secondary, and Tertiary Crushing?

Jul 10, 2020

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There are many ways to crush a rock—and depending on your industry, your location, and the project specifications, the equipment that you use and the layout by which it crushes that rock is often rather unique, especially when it comes to product size.

The degree to which material is reduced through stages of primary, secondary, and tertiary crushing can depend on the type of material, like aggregate, concrete, and asphalt, and can also depend on the variety of output sizes needing produced.

What Is Primary, Secondary, and Tertiary Crushing?

Primary crushing is the first stage of material reduction and can sometimes be the only stage needed to generate the desired product for a job. Depending on the setup, primary crushing will take the larger material that has been blasted, excavated, or reclaimed and process it through an impactor, jaw, or gyratory crusher to generate a range of product sizes.

For many aggregate producers, utilizing a closed-circuit portable crusher plant with scalping and screening capabilities can be all they need to create the product they need. But when a wider variety of product is desired and certain material is being processed, like concrete and asphalt, it can be valuable to rely on additional stages of crushing, like secondary and tertiary.

Secondary crushing, as you can imagine, is the second stage of material processing following its initial reduction. At this stage, material will flow through perhaps a second impactor or even a cone crusher, which is effective at breaking down these types of material.

There are also tertiary and even quaternary stages of crushing that exist to achieve the finer levels of material reduction. These stages in addition to secondary crushing can often be laid out utilizing an open-circuit portable crusher plant system where processed material is screened and conveyed from one crusher to the next.

Relying on these many stages of crushing beyond only primary can add great value to a crushing operation. Not only can multiple sizes of product be generated, but often in an open-circuit crushing layout, the flow and processing of material is streamlined and can increase output when compared to a closed-circuit crushing layout.

Eagle Crusher offers a comprehensive portfolio of closed-circuit and open-circuit portable crusher plants alike, manufacturing powerful equipment like horizontal-shaft impactors, jaw crushers, and cone crushers that are critical for any stage of crushing. When you speak with a Team Eagle representative, we can help you determine which crushing equipment will be best for your next project.

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Previous Posts

Understanding the financial programs available to you

Understanding the financial programs available to you For the past decade, interest rates have been at historical lows, however with increasing interest rates and inflation, new equipment prices might come as a shock. The use of the proper financial programs can help...

Counting Down to CONEXPO-CON/AGG 2023

Counting Down to CONEXPO-CON/AGG 2023 Eagle Crusher is excited to be exhibiting at CONEXPO-CON/AGG and to celebrate being only 4 months away from CONEXPO-CON/AGG, we’re taking a look at our last four times exhibiting at CONEXPO-CON/AGG.   2020 Exhibiting at...

Maximizing Your Crushing Equipment Layout

Maximizing Your Crushing Equipment Layout There’s no time to waste when it comes to crushing your production output goals, so you want to make sure your crushing equipment layout is right for the job. That’s why we’re taking a closer look into the layout of your...

Preparing for Cold Crushing

Preparing for Cold Crushing It’s that time of the year again, where temperatures in the northern hemisphere start to drop. You know that crushing in the cold, or shutting down your operation, isn’t too far away. The easiest way for your operation to freeze is by not...

A History of Eagle Crusher Manufacturing

A History of Eagle Crusher Manufacturing on National Manufacturing Day October 7th is National Manufacturing Day, and on this important day for American manufacturing, we wanted to share a little bit of history on our more that 100 years of manufacturing crushing,...

CONEXPO-CON/AGG Preparation

The 6-month mark to CONEXPO-CON/AGG has officially been passed, but your preparations shouldn’t be at a stand-still. Now is the time to check these items off your list to relieve you from the stress of planning and to save the most money. It’s easy to stay...

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Optimizing Hopper Feeder Safety

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The Importance of Asphalt Recycling and Crushing

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