With a Dinnissen roller mill it is possible to reduce product, without grinding it to powder. The product is reduced by two counter-rotating rolls. Depending on the desired fineness, Dinnissen supplies roller mills with different profiles and adjustable space between the rollers.
Process:
Milling & GrindingIn a roller mill, the product is compressed between two counter-rotating rollers and reduced. A major advantage of this process is that the fines content (powders) remains limited compared to other grinding principles. A nice homogeneous grain size distribution can be achieved. It is possible to feed the product through one, two, or three roller pairs. The space between the rollers is hereby steplessly adjustable to an accuracy of 0.2 mm, as a result of which the product is continually downsized.
Minimum finesse, maximum capacity
The roller mill is ideally suited for products that need to be downsized, but do not need to be ground into powder. Because we do everything in-house - from design and development to testing and improvement - we have been able to develop a roller mill that achieves a nice homogeneous grain size distribution time after time. The degree of product refinement can be determined by the distance between the two rollers, the profiles on the rollers, and the number of rollers used to downsize a product.
Roller mills from Dinnissen are used successfully in different countries and various industries. Thanks to the low energy consumption and high capacity, large quantities of product can be processed in an environment-friendly and safe way.
With a roller mill, various products can be crushed and ground. Product refinement occurs through a combination of compressive and shear forces. This principle is especially very suitable for products with a fibrous structure, such as cereals, oilseeds, and biomass. Because the heat generation is very low, it does not affect the products to be processed. The grain size of the product is determined by the profile of the roller and the space between the rollers. For ultrafine product pulverization, several pairs of rolls can be placed one above the other.
When using multiple pairs of rolls, the top two rolls are furthest apart, and the bottom two rolls are closest together. The further the product is in the production process, the finer it gets. A roller mill can reduce the product from medium-fine grains to ultra-fine grains, depending on the product and the desired result.
A roller mill uses two rollers that rotate against each other. The principle of the roller mill is that the rollers are close enough to each other so that no 'whole products' pass through, but far enough apart to ensure the product is not completely crushed. The distance between the two rollers can be determined per product and desired result. One of the two rollers is attached to the housing of the machine and the other is fixed by a suspension. By moving the roller on the suspension, the distance between the two rollers can be adjusted. Due to the low heat generation, it is also possible to grind moist and greasy products (e.g. raw materials for the food industry) without any problems.
Download our brochure or the datasheet with all options, models, and measurements, or freely contact one of our experts.
From hammer mills and shredders to grinders and breakers. In addition to roller mills, we can achieve your desired grain or product size with various grinding and crushing solutions, together.
System integrator Dinnissen optimizes and innovates your production process with tailored solutions: developed, manufactured and tested in-house. From product intake, transport, dosing and weighing, mixing, grinding, sieving and packaging to full automation and control. We maximize the performance and efficiency of your entire process.
Process specialists unafraid to push boundaries
Dinnissen possesses expertise distinct from our in-house capabilities. They are process specialists unafraid to push boundaries and set limits.
Raymond Nolet- Founder - MiFood
Quadrupled production capacity
In collaboration with Dinnissen, we have quadrupled our production capacity from 3 to 12 tons per hour.
Harald Schmalwieser- Managing Director - Solan
Collaboration based on mutual respect
Our collaboration with Dinnissen is based on mutual respect and trust. We challenge each other to continuously innovate and improve
Stefan Kuijpers- Director - Vitelia
Service on weekends
One day there was an important issue and one of Dinnissen's engineers immediately took action during the weekend. I have never seen other foreign partners do this.
Mr. Kimio Aono- Founder - APTe Japan
Six-fold increase of total production
Production has gone from 3-5 tons per day to 30 tons per day. That's a six-fold increase in total production.
Michiel de Boer- CEO - Nöll & Co.
Easily and safely changing sieve basket
The ease and safety with which the sieve basket can be changed were decisive factors in our choice for a Dinnissen sifting machine.
Mr. Kreuzer- Company Manager - Südstärke
Didn't consider any other option than Dinnissen
When the mixers needed replacement and Dinnissen could do a one-on-one replacement, we really didn't consider any other option than Dinnissen.
Elmar Flach- Technical Specialist - Voergroep Zuid
Mixers have been running 30 years
Dinnissen machines may not be the cheapest in terms of purchase price, but in terms of value for money, there are none better. Our Dinnissen mixer has been running extremely reliably for 30 years.
Adwin van der Vorst- Directeur - VDV Group
World player in process technology
To realize production processes of the best quality, we work closely with Dinnissen: One of the strongest players in the world in process technology and hygienic design.
Gerben Koopmans- Project Engineering Manager - Nestlé
Tailor-made solution for every problem
What charmed us most about Dinnissen was that they responded perfectly to our questions each time: they jumped right in and quickly came up with a tailor-made solution to each problem.
Jos Falvay- Project manager - Perstorp
Unique in preliminary work
What really makes Dinnissen unique, is the preliminary work. You can literally count every bolt and nut in the drawing.
Kenneth Gijzen- Maintenance & Engineering Manager - AAK Rotterdam
Technicians, not salespeople
Dinnissen's representatives strive for the best solutions. They are engineers first and salespeople second.
Frans van Zutven- Founder and Director - Van Zutven
High-quality vacuum coaters
We chose to work with Dinnissen because they supply high-quality vacuum coaters that fit exactly within our production lines.
Arnold Balledux- Global Technical Head Animal Feeds & Vice-president Animal Feed & Protein - Olam Agri
Flexibility, cleaning, short mixing time, and a homogeneous end product
We also considered other options but on the points we considered most important - flexibility, cleaning, short mixing time, and a homogeneous end product - Dinnissen scored best.
Sam Dimassi- Owner - Nutri-Dynamics
Drastically improved feed-quality
90% of our customers with laying hens have already switched to the new feed produced using the Pegasus® mixer and the Thermidor® system.
Kurt Egli- Former manager - Egli Mühlen
Filled three complete factories
Dinnissen has filled an entire factory for us with a complete production line, on three different occasions. They just get it right: from mixers and sifters to sampling and automation.
Erik Schut- Managing Director - Jonker & Schut
Mixing time of 60 seconds per batch
Previously, we had standard times in the mixing process of 14 - 15 minutes. With the Pegasus® mixer we achieve a mixing time of 60 seconds per batch.
Lothar Pixa- Director - Planta
No challenge is too big
At Dinnissen, they think in terms of challenges, not problems. They don't give up and keep going until there is a solution that satisfies all parties.
Martin Sonneveld- Production Director - United Petfood Waalwijk
Choice based on trust, feeling, and price
We made a choice based on trust, feeling, and price. In this total package, Dinnissen came out best.
Marcel van den Oetelaar- Proces Technologist - Vobra
Supplied entire installation
Dinnissen is the first company we've worked with that delivers a total package. Because Dinnissen supplied the entire installation, including platforms and safety installations, the entire line is CE-certified.
Michel Kliphuis- Manager - Steinweg Amsterdam
Fully automated sampling
We considered several machine developers, but the high quality of the Dinnissen machines and the competence and commitment of the employees were decisive for us.
Arjan van Dijk- Project Manager - Ausnutria
Customized mixers
Dinnissen thought along with us from start to finish. For example, they used existing drawings for these new mixers to save us costs in the engineering phase.
Pieter Gorter- Project Manager - ForFarmers
Increased capacity despite using 17 fewer mixers
The amazing part is that we managed to increase the capacity, despite using 17 fewer mixers.
Edward Depre- Project Manager - Group Depre
The importance of hygiene and safety requirements
Dinnissen fully understood the importance of hygiene and safety requirements in our industry. They went the extra mile by providing us with all the necessary documentation, all ATEX drawings, and full traceability.
Anton Vleeshouwers- Project Director - DSM
