Combines drying, de-agglomeration / milling and classifying in one piece of equipment
Dry temperature-sensitive products, safely, even under increased temperatures, in a matter of seconds!
Produce ultra-fine powders in one step
Process bulk solids with a moisture content varying from a few % to more than 80%, from suspensions, slurries, pastes and dough, filter cakes or wet powders
High evaporation capacity
Compact design
Multi-purpose
Easy access for inspection and cleaning
Uses about 30-40% less energy per kilogram of evaporated water, compared to other direct drying technologies.
Principle of Operation
In the DMR flash dryer, the wet material is fed through customized feeding systems into the milling and drying section of the dryer's main body. The milling rotor disperses the wet material into very fine particles and the fine particles are fluidized in the milling chamber by temperature-controlled, hot gas coming in from the air heater.
The hot air (or inert gas) can be heated up to 650°C and as the wet product is dispersed, it is reduced in size in the bottom section of the DMR flash dryer. The drying system is kept under a negative pressure by the exhaust fan and the surface area of the product is increased enormously so that water (or other solvents) is evaporated instantaneously.
The dry and fine particles are conveyed with the gas stream to the top section of the DMR flash dryer where a separator classifies the particles by size. Then the particles pass the classifier at the set cut point and are conveyed with the exhaust air to a powder-air separating system like a cyclone, cyclone filter or cyclone scrubbers.
The DMR flash dryer retains a fluidized bed of product in the drying chamber to ensure a low level of adhesion of wet material on the inside wall of the drying chamber. Moreover, process parameters like classifier speed and outlet temperature can be adapted to control moisture content and particle size of the end product.
Key Benefits
Ultra fine regular end product Thanks to its specially designed dispersion rotor, our flash dryers can produce ultra-fine powders in one step, from suspensions, slurries, pastes and dough, filter cakes or wet powders.
High evaporation capacity Thanks to the combination of high ΔT with a good dispersion of the wet product in the air, our flash dryers can evaporate large quantities of liquids.
Compact design Compared to other direct drying technologies, the flash dryer requires up to 50% less space.
Multi-purpose Filter cake or slurry, in the same machine. Therefore, with the DMR, unlimited mechanical dewatering is possible before the final drying stage.
Easy access Either for cleaning, inspection or maintenance inside the dryer, our flash dryers offer the best accessibility from the market, regardless of what size.
Various systems available Open, closed- and recycle system concepts.
Models
Our flash dryer range includes three specialized types: the MDV type is intended for dispersion and soft grinding, using a vertically-driven rotor that effectively disperses wet agglomerates and solids. The MDH type is optimized for intensive grinding, featuring a horizontally-driven rotor with swing hammers for efficient milling and dispersion. The DMR type is built for strong dispersion, equipped with a high-speed, multi-blade rotor that generates intense impact and air turbulence, reaching a typical tip speed of 110 m/s. Each model employs a unique rotor mechanism tailored to specific particle sizes and material properties. These differences in geometry, dispersion principles, and energy input enable optimal handling of various materials.
The DMR is available in several models. Our expert design and engineering team can help you specify the ideal configuration for your specific requirements. Below are some typical characteristics for a number of models—for reference only. Detailed information on all models is available upon request.
Model
[-]
DMR-1H
DMR-2H
DMR-3H
DMR-4H
DMR-5H
DMR-6H
DMR-7H
Heigth
[cm]
194
300
330
360
450
500
550
Length
[cm]
140
170
230
240
360
450
500
Width
[cm]
70
120
150
160
160
260
320
Max. power grinding motor
[kW]
11
22
45
90
200
280
355
Min./max. power separator motor
[kW]
0.75/4
1.5/11
2.2/15
5.5/30
11/45
22/55
30/75
Continuous Drying Systems
As a global developer, manufacturer and 'one-stop shop' supplier of powder processing systems and plants, Hosokawa Micron provides a wide range of both batch and continuous drying technologies. We carefully select, configure and integrate all components and processes in order to ensure the optimal functionality, quality and efficiency of your drying system.
Thanks to our long-standing experience, we are the ideal partner to transform your drying operation into a bespoke powder processing system, from incoming base ingredients to final products.
Hosokawa Micron is an expert in developing advanced solids processing systems and we put a lot of our own energy into developing drying systems that will save you energy. The DMR flash mill dryer, for example, uses about 30-40% less energy per kilogram of evaporated water, compared to other direct drying technologies.
Testing & Process Development
Our Test and Process Development Centre in the Netherlands offers unique possibilities for testing your product to determine the most efficient process, system or plant prior to final design. We can provide laboratory-level as well as production-sized trials.
Whether you wish to test a single machine or a complete powder processing system, the same skilled and experienced staff are here to help ensure that your requirements are met, and that you are entirely satisfied with the results.
We offer process equipment and technologies from individual units to large scale bespoke system solutions. Our principle is to deliver high performance yet affordable solutions that meet our customers' demands and long term challenges.
Talk to Our Experts
Let our process specialists help you develop the optimal solution for your powder and bulk solids processing – from the first trial in our test centre to a full-scale industrial production system.
Hosokawa Micron B.V. is committed to sustainable and responsible process technology. Our ISO 14001 certification covers key environmental aspects such as air, soil, energy, waste, water, noise and hazardous substances. With an EcoVadis Silver Medal, we rank among the top 15% of EcoVadis-rated companies in the special machinery industry.
As a global developer, manufacturer and 'one-stop shop' supplier of powder processing systems and plants, Hosokawa Micron provides a wide range of both batch and continuous drying technologies. We carefully select, configure and integrate all components and processes in order to ensure the optimal functionality, quality and efficiency of your drying system.
Thanks to our long-standing experience, we are the ideal partner to transform your drying operation into a bespoke powder processing system, from incoming base ingredients to final products.
