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Other agricultural residues suitable for the briquetting process

There are many suitable agricultural residues for the briquetting process, so if you did not spot your specific residues in our overview, you can read more about what other types of agricultural raw materials that are suitable for briquetting here.

We here at C.F. Nielsen have vast experience in briquetting agricultural waste. Waste such as Cocoa shells, Coffee husks, and Pineapple waste, just to name a few. These were once only considered byproducts but can now be viewed as valuable resources.

Talk to a briquetting expert

Agri Briquettes in the briquetting process

Cocoa shells, known for their resilience and hardness, can be transformed into high-calorific briquettes suitable for various heating applications. Coffee husks, often discarded in vast quantities by the coffee industry, can now find new life as an efficient fuel with the nice aroma of roasted coffee through briquetting. Even pineapple waste, typically a challenge to dispose of due to its fibrous nature, can now with the help of the briquetting process be converted into compact and energy-dense briquettes, offering a sustainable solution for waste management.

You can find an overview of all the different kinds of agricultural materials we have tested here.

Agricultural briquettes and raw material.

At C.F. Nielsen we offer three different types of briquetting processes, Mechanical, Extruder, and Hydraulic. Each of the technologies can make valuable briquettes from agricultural waste.

The Mechanical briquetting process

Mechanical presses are used for larger installations, ranging from approximately 200 kg/h up to about 3500 kg/h, unlike the hydraulic press where the output is much smaller.
Briquetting is a process where the material is compressed under high pressure. The raw material is introduced in front of the piston which pushes the material forward. With the help of friction and heat, it is added to the main die, compressing the material and transforming it into a briquette.
The piston's compression of the raw material produces high temperatures, causing the release of various binding agents such as lignin. For this to happen, the raw material's humidity must, as a rule of thumb, be below 16%. The machine can handle drier and wetter material; however, we recommend, for optimal briquetting process, that the raw material is between 6-16% moisture.

A mechanical press is built like an eccentric press, with a constantly rotating eccentric connected to a piston that presses the raw material through a conical die. On a mechanical press, the desired counter-pressure can be adjusted by fitting a die with different conicity if the customer has a specific demand for the shape of the finished projects.

C.F. Nielsen A/S markets a wide range of different die systems designed for the briquettes' various materials and quality requirements.

The mechanical press is driven by electrical motors, minimizing energy loss in the machine. Therefore, the relationship between production and energy consumption is optimal.

The presses come with one or two compression screws, depending on the size of the press. This is one of several differences between C. F. Nielsen and our competitors in the field of mechanical presses.
Only the larger models have two compression screws. Normally, the limitation of a briquetting press is the ability to feed enough raw material to the press, especially for low-weight raw material.
The extra compression screws on the larger models give CFN additional capacity compared to competitors.

The Extrusion process

Is the latest addition to the C.F. Nielsen briquetting process. Here at C.F. Nielsen, we call the Extrusion process a Shimada press.

Unlike on the Mechanical press where the material is fed in front of a piston, then with an Extrusion press, the raw material is fed into the compression Screw via the feed screw. The compression screw then compresses the raw material through the conical fluted guide die and compression die, and this will form the briquette.

The Hydraulic process

A machine and technology that is robust and well suited to briquette Agri waste and turn it into valuable resources in the form of briquettes.
Manufactured by our sister company RUF in Germany and with over 6000+ installations worldwide combined between RUF and C.F. Nielsen there is no doubt that one of our machines can be at your assistance.

Want to know how to get started with your Agri waste and would you like to see if you could turn your waste into briquettes then fill out the form in this link and one of our sales representatives will get back to you.

A Danish Collaboration Providing Global Inspiration

As a furniture manufacturer, Carl Hansen & Søn produces 4-5 tons of wood residues daily.
This was a strenuous task on both Carl Hansen & Søn and the environment, costing both money and unnecessary carbon emissions from the trucks.

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