Milling & Grinding
Dinnissen helps you to quickly and efficiently grind and break ingredients to exactly the right composition and grain size. Key concepts here are uptime, hygiene, energy savings, minimal waste and the prevention of contamination.
Our solutions:
Minimizing Downtime
The Hamex® Fast Screen Exchange Hammer Mill allows sifter changes to be made while the rotor is still spinning. This results in ten minutes saved sifter change. In addition, the Hamex® Fast Screen Exchange Hammer Mill is equipped with large inspection hatches that provide quick and easy access for inspection, cleaning, and maintenance.
Hamex® Hammer Mills are the result of years of innovation and continuous development to make them even more efficient, productive, reliable, energy-efficient, safe and quiet. All Hamex® Hammer mills are designed as follows:
- Long service life thanks to its proven robust construction
- Good accessibility: wear parts can be replaced quickly
- Variable direction of rotation to spread wear
- Production, quality control, and testing are all carried out in-house
- Optimized over decades for efficiency, capacity, and uptime
Key features, options, and models
Depending on the characteristics of the product to be sifted, single hammers, double hammers or T-hammers are used. Normally the rotor in the hammer mill must come to a standstill before the sifter can be changed. It takes an average of ten minutes to do so. To save this time, Dinnissen has developed a semi-automatic sifting system. In the Hamex® Fast Screen Exchange Hammer Mill, the sifter in its sifter holder is automatically driven out of the machine, after which the operator can quickly exchange or inspect the sifter manually. During this operation, the rotor can keep rotating as usual. With regular product changes, this system provides significant time savings.
How does a Hamex® Fast Screen Exchange Hammer Mill work?
In the hammer mill, freely suspended hammers swing around at high speed. This creates centrifugal force which crushes the grinding material against the crushing plates inside the grinding chamber. These shredders have been specially developed to crush the material as efficiently as possible. The crushed product then leaves the hammer mill through the replaceable sifter. Depending on the properties of the product to be ground, single hammers, double hammers or T-hammers are used.
Would you like to know more about the Hamex® Fast Screen Exchange Hammer Mill?
Download our brochure or the datasheet with all options, models and measurements or freely contact one of our experts.
MORE SOLUTIONS FOR MILLING & GRINDING
Besides hammer mills, we can achieve the desired grain or product size with various grinding and crushing solutions. From shredders and breakers to grinders and grinding mills: together we look at which solution is most suitable for your product and production process.
Fully automatic sifter changing system and frequency control
The Hamex® Automatic Screen Exchange Hammer Mill makes it possible to change sifters without the intervention of an operator, while the rotor continues to run. This results in saving ten minutes as well as a reduction in the need for manpower. In addition, the Hamex® Automatic Screen Exchange Hammer Mill can be equipped with frequency control, which allows the rotor speed to be precisely tuned to the desired result.
Hamex® Hammer Mills are the result of years of innovation and continuous development to make them even more efficient, productive, reliable, energy-efficient, (explosion) safe and quiet.
All Hamex® Hammer Mills are designed as follows:
- Long service life thanks to tried and tested robust construction
- Good accessibility: worn parts can be replaced quickly
- Variable direction of rotation to spread wear
- Production, quality control, and testing are all carried out in-house
- Decades of optimization for efficiency, capacity, and uptime
Key features, options, and models
The Hamex® Automatic Screen Exchange Hammer Mill rotates at a speed of up to 1800 rpm. However, the tip speed of the hammers has remained the same, allowing you to achieve a similar grind at lower energy consumption. The Hamex® Automatic Screen Exchange Hammer Mill can be equipped with frequency control, which allows the rotor speed to be tuned to the desired result. This allows easy switching between a fine grind and a coarser grind structure. Another option is a specially developed airflow system. This regulates the throughput of particles with the correct fineness quickly and efficiently. In addition, the machine can be equipped with a stone collector and magnet that separate iron particles and hard objects from the product to be processed. This helps to prevent contamination of the product and damage to the sifting.
How does a Hamex® Automatic Screen Exchange Hammer Mill work?
In the hammer mill, freely suspended hammers swing around at high speed. This creates centrifugal force which crushes the grinding material against the crushing plates inside the grinding chamber. These shredders have been specially developed to crush the material as efficiently as possible. The crushed product then leaves the hammer mill through the replaceable sifter. Depending on the properties of the product to be ground, single hammers, double hammers, or T-hammers are used.
Would you like to know more about the Hamex® Automatic Screen Exchange Hammer Mill?
Download our brochure or the datasheet with all options, models, and measurements or freely contact one of our experts.
MORE SOLUTIONS FOR MILLING & GRINDING
Besides hammer mills, we can achieve the desired grain or product size with various grinding and crushing solutions. From shredders and breakers to grinders and grinding mills: together, we decide which solution is most suitable for your product and production process.
Compact and reliable hammer mill
The grinding principle of the stainless steel Dinnox® Hammer Mill is based on years of experience in the hammer mill industry. The Dinnox® Hammer Mill is characterized by a very compact design, a variable rotor speed and a one-sided bearing. The capacity of the Dinnox® Hammer Mill is between 30 and 6000 kg per hour, depending on the product and the desired final fineness. The Dinnox® Hammer Mill complies with the EHEDG guidelines and because of its stainless-steel design it is ideally suited as a grinding step in the food industry or in a grinding process where wet cleaning is involved.
Dinnissen offers you a great deal of expertise in the field of product grinding with a wide range of final finishes. We continue to develop our mills to make them ever more efficient, productive, hygienic, and reliable. The Dinnox® Hammer Mill was developed with a view to the strict hygiene requirements that mills in, for example, the food industry must meet. All Dinnox® Hammer Mills are designed as follows:
- Hygienic grinding due to stainless-steel and one-sided bearings
- Variable rotor speed
- Validated milling principle
- Good accessibility: wear parts can be replaced quickly
- Designed, developed, and tested in-house
Key features, options, and models
The Dinnox® Hammer Mill is designed for industries with strict hygiene requirements. The one-sided bearing makes it possible to drive the rotor completely out of the housing. This makes cleaning, inspection, change of stroke bars and adjustment of the hammer assignment very easy. The rotor speed is variable, and the final fineness can be set between 150 microns and 3 mm. The capacity of the Dinnox® Hammer Mill is between 30 and 6000 kg per hour, depending on the product and the desired final fineness. The stainless-steel design makes the Dinnox® Hammer Mill very suitable for food processing and wet cleaning processes. The Dinnox® Hammer Mill can be tested with your product in our test room.
How does a Dinnox® Hammer Mill work?
In the hammer mill, freely suspended percussion hammers swing around at high speed. The resulting centrifugal force crushes the grinding material against the special crushing plates inside the grinding chamber. The crushed product then leaves the hammer mill through the replaceable sifter. Depending on the properties of the product to be ground, single hammers, double hammers, or T-hammers are used.
Would you like to know more about the Dinnox® Hammer Mill?
Download our brochure or the datasheet with all options, models, and measurements or freely contact one of our experts.
MORE SOLUTIONS FOR MILLING & GRINDING
Besides hammer mills, we can achieve the desired grain or product size with various grinding and crushing solutions. From shredders and breakers to grinders and grinding mills: together we look at which solution is most suitable for your product and production process.
Optimum product refinement with a centrifugal mill from Dinnissen
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.
- Suitable for very fine product grinding
- Simple cleaning due to one-sided bearing
- Proven robust construction
- Good accessibility: wear parts can be quickly replaced
- You can test your products in advance for the desired result in our Dinnissen D-Innocenter.
Key features, options, and models
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.
How does a centrifugal mill work?
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.
More information about our centrifugal mills?
Download our brochure or the datasheet with all options, models, and measurements. Or freely contact one of our experts.
MORE SOLUTIONS FOR MILLING & GRINDING
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.
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.
- Always homogeneous grain size distribution
- Minimal energy consumption, maximum capacity
- Robust construction ensures a long service life and low maintenance requirements
- Safe and reliable: in-house production, quality control, and testing
- You can test your products in advance for the desired result in our Dinnissen D-Innocenter.
Key features, options, and models
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.
How does a roller mill work?
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.
More information about our roller mills?
Download our brochure or the datasheet with all options, models, and measurements, or freely contact one of our experts.
MORE SOLUTIONS FOR MILLING & GRINDING
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.
Uniform and efficient product downsizing
To achieve exactly the desired grind fineness, the clearance between the directly driven rotor and the housing is accurately adjustable. Thanks to the modular configuration and the frequency-controlled variable rotor speed, Dinnissen shredders ensure accurate and uniform product reduction over and over again. The shredders can be used for such purposes as the reduction of leafy herbs, chili peppers, gelatin, and cellulose sheets, as well as plastic and rubber reduction.
In addition to the space between the directly driven rotor and the housing, the clearance between the blades is also very important for the desired product fineness. This is usually below 0.3 mm. Because the blades are mounted diagonally, the shredded product does not accumulate behind the knives and the product can be shredded continuously and efficiently.
- Variable rotor speeds
- Divergently mounted cutting plates
- Suitable for many different products and industries
- Safe and reliable
- In-house production, quality control, and testing
Key features, options, and models
Our shredders are available in various types of material. The blades mounted on the rotors are hardened and wear-resistant, but also easily replaceable. Additional stator blades are present in the grinding chamber. The blades move through the product at a high speed, causing product reduction. Over time, the blades become less sharp, as a result of cutting. For this reason, all Dinnissen shredders contain a simple and fast blade change system.
The effectiveness of reducing a given product depends on the product properties, the geometry of the blades and the cutting speed. The cutting speed can be diversified because the speed of the rotors is adjustable. The built-in air circulation system ensures low energy consumption at low capacities. If desired, the shredder can be designed to be completely gas-tight. This makes the shredder excellently integrable in closed-loop process lines, which must be completely inert.
How does a shredder work?
A shredder works because of shear forces. The material is divided into pieces when the maximum shear stress in a material is exceeded. This happens because the sharp blades in the shredder exceed the maximum shear stress in the material. The shredder works based on the blades moving through the product at high speeds.
The product is in a grinding chamber and usually, two rotating rotors in opposite directions are present, to which the blades are attached. In this process, product reduction occurs through the rotation of the blades attached to the rotors.
There is also another way in which a shredder can operate. In fact, in other types of shredders, the product passes through a stationary ring of sharp blades in a rotating grinding chamber. The blades cut off some of the product particles passing by at a high speed. With this principle, the blades do not move and cut through the material, but the material itself moves against the blades.
More information about our shredders?
Download our brochure or the datasheet with all options, models, and measurements, or freely contact one of our experts.
MORE SOLUTIONS FOR MILLING & GRINDING
From hammer mills and shredders to grinders and breakers. In addition to shredders, we can achieve your desired grain or product size with various grinding and crushing solutions, together.
Very fine product due to fast, hygienic pulping
Nowadays, pulpers are mainly used for industrial blending in the food and feed industries. Therefore, it is designed in such a way that this machine can be filled, emptied, and cleaned quickly and thoroughly. In this way, the pulper complies with the strictest hygiene requirements. The design is aimed at making the main function of pulverizing raw materials as efficiently as possible. The rotating blades create a vortex in the pulp, which results in a very fine product. By working together with research centers to find the most efficient and hygienic industrial blender possible, Dinnissen has developed a pulper that is highly suitable for the food and feed industry, where hygiene is of crucial importance.
- Easy to clean, complies with the strictest hygiene requirements
- Suitable for the realization of a very fine product
- Long service life due to the proven robust construction
- Suitable for the food and feed industry
- Production, quality control and testing are all carried out in-house
Key features, options, and models
Dinnissen pulpers are mainly used in the food and feed industry. Here, it is important that not too much heat is generated, to prevent the products from losing their taste and nutrients. Thanks to the pulper’s special blade construction, hardly any heat is brought into the product, thus preserving taste and nutrients to the maximum. Furthermore, with the help of the required vortex, a very fine product can be obtained.
How does a pulper work?
Originally, a pulper is a machine for making pulp: the basic ingredient for making paper. The product to be processed is placed in a large reservoir. Then, an agitator in the middle of the reservoir causes sharp blades to cut through the material at high speed in a rotating motion. The cutting of the blades turns the product into so-called pulp, which is then discharged through a sieve.
The operating principle of the pulper is based on pressure forces and shear forces. Pulpers are mainly suitable for processing materials with fibrous structures. The fineness that a pulper can impart to the product mix can vary from medium to ultrafine.
More information about our pulpers?
Download our brochure or the datasheet with all options, models, and measurements, or freely contact one of our experts.
MORE SOLUTIONS FOR MILLING & GRINDING
From hammer mills and shredders to grinders and breakers. In addition to pulpers, we can achieve your desired grain or product size with various grinding and crushing solutions, together.
Optimized for capacity and reliability
Hamex® Hammer Mills have been successfully used for decades by producers in various industries. It is a reliable solution for grinding soft to medium-hard products, such as grains, sugars, and minerals with a fineness from 150 microns to about 3 mm.
The Hamex® Hammer Mill is the result of years of innovation and continuous development to make it even more efficient, productive, reliable, energy-efficient, (explosion) safe, and quiet. All Hamex® Hammer Mills are designed as follows:
- Long service life thanks to tried and tested robust construction
- Good accessibility: worn parts can be replaced quickly
- Variable direction of rotation to spread wear
- Production, quality control, and testing are all carried out in-house
- Optimized over decades for efficiency, capacity, and uptime
Key features, options, and models
Hamex® Hammer Mills can be equipped with frequency control, which allows the rotor speed to be adjusted accurately to the desired result. This makes it easy to switch between a fine or coarse grind. Another option is a specially developed airflow system. This increases the capacity and saves on energy consumption. Normally, the hammer mill rotor must come to a stop before the sifters can be changed. Especially if you want to change sifters regularly, this is time-consuming. To ensure as little downtime as possible, we have developed a full- and semi-automatic sifter changing system.
How does a Hamex® Hammer Mill work?
In the hammer mill, freely suspended hammers swing around at high speed. The resulting centrifugal force crushes the grinding material against the special crushing plates inside the grinding chamber. The crushed product then leaves the hammer mill through the replaceable sifter. Depending on the properties of the product to be ground, single hammers, double hammers or T-hammers are used.
Would you like to know more about Hamex® Hammer Mills?
Download our brochure or the datasheet with all options, models, and measurements, or freely contact one of our experts.
MORE SOLUTIONS FOR MILLING & GRINDING
Besides hammer mills, we can achieve the desired grain or product size with various grinding and crushing solutions. From shredders and breakers to grinders and grinding mills: Together, we decide which solution is most suitable for your product and production process.
Breaker
A breaker can be used for large, hard materials and is also suitable for elastic and tough materials with a fibrous structure. The product that can be delivered can vary from smaller chunks to grains of several millimeters and dust particles with a diameter of 0.3 microns. Dinnissen breakers have been used successfully for decades by producers in various sectors such as food, infant food, feed, pet food, chemicals, minerals, and recycling.
Given the wide variety of clients, countries, and applications, Dinnissen offers you a great deal of expertise in breaking to exactly the desired specifications. Our breakers are the result of many years of further development to make them even more efficient, productive, hygienic, dust-proof, reliable, and energy-efficient. All our breakers are designed as follows:
- Minimum energy consumption, maximum capacity
- Robust construction ensures long life and low maintenance
- Simple operation and good accessibility
- Safe and reliable: in-house production, quality control, and testing
- You can test your products in advance for the desired result in our Dinnissen D-Innocenter.
Key features, options, and models
The directly driven machines are extra robust and therefore extremely suitable for breaking soft to medium-hard lumps, clods, and agglomerates. Because of the low heat generation, our breakers are excellent at reducing moist and greasy products, such as cocoa cake, filter cake, and cinnamon sticks. The fineness range is between 10 mm and 150 microns. Depending on the desired final fineness, different rotor versions are available, with capacities up to 80 tons/hour. Of course, this capacity depends on the product and the desired fineness.
For applications in the fine range, the rotor is placed above a sifting section. The broken/ground material is rotated over the sifter to further reduce the product. The sifting section is optionally removable thanks to an easily accessible sliding drawer. The rotor has no hollow spaces and is mounted on one side, allowing it to be moved out of the housing via a guide rod for easy cleaning and inspection.
Dinnissen shredders are also available as EHEDG versions, optimized for hygiene and food safety. For the food industry and infant food, our shredders are made entirely of stainless steel, including a very high-quality finish.
How does a breaker work?
The operation of the crusher is based on the rotor/stator principle and impulse forces. The product is reduced by ridges on a central shaft, in combination with stator combs mounted in the housing. The low rotational speed of the crusher makes it possible to process relatively large amounts of material at low energy consumption. Due to the low heat generation, it is also possible to shred moist and greasy products (e.g. raw materials for the food industry) without any problems. For applications requiring the generation of fine powders, a sifting system consisting of several sifters is mounted under the rotor.
More information about our breakers?
Download our brochure or the datasheet with all options, models, and measurements. Or freely contact one of our experts.
MORE SOLUTIONS FOR MILLING & GRINDING
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.
We’re proud to be trusted by the best producers in the world
Our challenge?
Optimization of your entire process
At Dinnissen we will be happy to help you automate and innovate your entire process with customized solutions. Dinnissen can add value in every process step. Take a look at our solutions for each step of processing powders, pellets grain and granular materials: