A centrifugal mill is used for the very fine grinding of a wide range of products. Dinnissen centrifugal mills provide a final fineness of 700 to 30 microns and reach - depending on the product - a capacity of 100 to 11,500 kg per hour.
Process:
Milling & GrindingIn a centrifugal mill, the material to be ground that is in the mill is swung against a grinding track by centrifugal force. The centrifugal mill is driven by a rotor, which causes the material to move in a circular path. Centrifugal force is also called centre fleeing force, because the objects appear to flee (escape) the center. You can see the same principle in a dryer, where the water is pressed against the drum by centrifugal force and is discharged through the holes in this drum.
Our centrifugal mills are ideally suited for very fine product grinding. The mill is suitable for various types of product. Depending on the grinding material and the desired final fineness, various rotor and stator designs are available. These include pins, a turbo motor or, for example, an additional paddle wheel that can keep the grinding path clear during the grinding of greasy and sticky products.
The relatively high rotor speeds create a lot of air movement. This has a cooling effect on the product to be ground. Since the grinding material does not heat up, the moisture content is maintained. Our milling systems are equipped with extensive filter systems and a fan to ensure air/gas displacement across the centrifugal mill.
An important advantage of our centrifugal mills is the very small final fineness that the mills can generate. These cast steel or stainless-steel mills are available in a pressure impact resistant version up to 10 bar and are extremely suitable for the grinding of various food products. The air displacement that occurs due to the relatively high rotor speeds ensures that the product remains cool. As a result, Dinnissen centrifugal mills are ideally suited to grinding moist and greasy products. Examples include cocoa cake, filter cake, and cinnamon sticks.
Various rotor and stator versions are available, such as pins, a turbo motor, or an additional paddle wheel. The capacity is - depending on the product - between 100 and 11,500 kg/hour and the desired final fineness can vary from 700 to 30 microns. Our centrifugal mills are single bearing, allowing the rotor to be moved completely out of the housing for inspection, maintenance, and cleaning.
A centrifugal mill works based on centrifugal force and the rotor-stator principle. The product to be ground lands on the rotating rotor and is thrown out by the centrifugal force. Due to the force with which the product hits the stator combs, product reduction takes place. Through our years of experience, we can advise on the right settings and designs for each product and desired final fineness. An additional impeller, for example, can ensure that the grinding path is kept free when working with fatty and sticky products. The centrifugal mill is suitable for these types of products because the air displacement released by the relatively high rotor speeds cools the product. This keeps the moisture content in the product stable.
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 centrifugal 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.
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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.
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
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
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
