What Is Primary, Secondary, and Tertiary Crushing?

Jul 10, 2020

Recent Posts

Which Screening Setup Can Optimize Your Crushing Operation?

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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

Which Screening Setup Can Optimize Your Crushing Operation?

Portable plants and other crushing equipment can come in many shapes and sizes depending on the needs of a producer. Just as integral to a crushing operation as an impactor or jaw crusher are the screens being utilized to sort product. With so many options and...

Eagle Crusher Company Updates – April 2021

Eagle Crusher Names New Del. and MD. Crushing and Screening Plant Distributor Eagle Crusher Co., Inc. is proud to announce GT Mid Atlantic as the new Eagle Crusher distributor for the states of Delaware and Maryland. The company will represent Eagle Crusher’s full...

Following Lockout-Tagout Procedure to Protect Crushing Personnel

In order to protect team members who are performing maintenance on crushing equipment like portable plants, energy must be completely removed and disconnected from relevant components to make maintenance safe through a process known as an isolation procedure or more...

Optimize Your Crushing with Eagle Crusher’s Configurable Designs

Working in the crushing industry can lead to some unique challenges on the job site. How to best lay out equipment to optimize production? What type of crushers are needed to reduce the material efficiently? Will one crusher be enough for the job? Eagle Crusher is...

Properly Feeding Material for Crushing

On a crushing site, there are many moving pieces and parts that work together to ensure that production is optimized and remains issue-free, like the loaders, the crushers, screening plants, conveyors, etc. Loaders transporting material to the crusher have the...

Reselling Portable Plants & Buying Preowned Crushing Equipment

Portable crushing plants like those that Eagle Crusher manufactures are engineered to be high quality and heavy-duty products in order to withstand the extreme amounts of wear and tear associated with crushing and screening materials like aggregate, concrete, and...

Eagle Crusher Company Updates – March 2021

Eagle Crusher Exhibits at C&D World 2021 The Eagle Crusher sales team exhibited our comprehensive line of crushing equipment and services at the C&D World 2021 Conference & Exhibition, hosted at the AT&T Hotel and Conference Center on March 21...

Wearing PPE and Crushing Safely

Heavy material like aggregate and concrete blocks can move around a crushing site quickly, from the loader, into an impactor, and out across conveyor belts. All of this moving material, paired with the site’s heavy machinery, can present job hazards. Crushing teams...

Powerful Portable Crushing Plants for C&D Recycling

Recycling materials like concrete and asphalt collected from construction and demolition waste through the use of crushing equipment like portable plants is an industry that has seen tremendous success for its positive environmental impact and cost-saving results....

Sorting Rebar and Metal Contaminants When Crushing Concrete

In the crushing industry, C&D recycling has grown in popularity in recent years for its significant waste-saving results; millions of tons of concrete and asphalt are able to be diverted from landfills every year which results in big savings for companies and...

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