Cold briquetting
German engineering. Global impact.
Cold briquetting
Cold Briquetting -
how it works
Cold briquetting using roller presses converts fine bulk materials into dimensionally stable briquettes. Two counter-rotating rollers with specially shaped molds compress the material under high pressure—without any external heat input. The result: a product that can be stored and transported and is ready for further use.
This technology is used wherever lumpy material is required. Köppern not only offers a wide range of customizable machines, but also comprehensive expertise throughout the entire briquetting process—from binder selection to peripheral equipment.
In cold briquetting, the recipe is compiled on the basis of defined parameters such as raw material type, grain size, moisture content and binder content. The decisive factor is the optimum interaction of these factors to ensure the desired briquette quality - meaningful results from pilot plant tests form the basis for this.
If the feed material cannot be plasticized, binding agents are used. The suitable binding system is determined in tests. In addition to good briquette quality, criteria include local availability and suitability for the downstream process.
The mixer ensures homogeneous distribution of all components—especially binders, moisture, and additives—and is therefore crucial for briquette quality. Depending on the material properties, different types of mixers are used, such as batch mixers or continuously operating intensive mixers.
During briquetting, the press compacts the mixed material under high pressure to form dimensionally stable briquettes. Köppern offers various types of roller presses for this purpose, tailored to the material, throughput, and briquette shape. Thanks to precise material feeding, roll gap control, and robust roll design, our presses impress with their long service life, consistent briquette quality, and precise shaping—even with demanding and abrasive materials.
After briquetting, the screen separates undersize particles from the product fraction. The undersize particles are fed back into the press.
Storage and post-treatment ensure the stability and durability of the briquettes—e.g., through drying, hardening, or cooling—and prepare them optimally for transport and further processing. Consistent conditions are important in order to specifically control post-hardening or moisture absorption or loss. Our technologies enable gentle material handling, which has a positive effect on briquette quality.
Your advantages
Comprehensive expertise in binding agents and their application
Press forces up to 150 kN/cm
The pressing force is adapted to the task at hand. Each material has "its" pressing force, at which optimum product properties are achieved. Specific press forces of up to 150 kN/cm are required to be able to fuse metallic materials. Our presses cover the entire range.
Continuous development and process optimization
Easy maintenance for high system availability
When developing our systems, we place great emphasis on maintenance-friendly design, which reduces downtime to a minimum. Easily accessible components, well-designed assemblies, and the use of low-wear materials enable fast and easy maintenance. The result is high system availability and reliable operation without interruptions.
Residur® - Powder metallurgical tools with outstanding performance
Our powder metallurgical Residur® tools also offer outstanding performance in cold briquetting thanks to their wear resistance and dimensional stability. This ensures consistently high briquette quality over long service lives, even with abrasive or difficult-to-press materials.
Heavy-duty design for long-term use
Tests possible on a pilot plant and semi-industrial scale
Why Köppern?
Learn more about our systems and machines for cold briquetting, as well as our roller presses.
You can find everything about new developments and important dates around Köppern here.
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