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You want grinding processes that are gentle on the product and pulverize your bulk materials to optimum powder finenesses at maximum throughput rates? No matter what you are grinding – limestone, gypsum or other organic or inorganic materials – the whirlwind mill offers you the right grinding technology for all soft to medium-hard bulk materials.
We at Grenzebach understand that bulk materials are as individual as you are, we deliver our whirlwind mill in different sizes, with grinding tools configured for the product you want to grind. Our tailor-made mill concept combines ideal powder finenesses with excellent upper limits for grain size and narrow particle size distribution in a low-vibration, maintenance-friendly mill. We achieve this through a grinding principle that is gentle on the product with additional autogenous comminution of the particles themselves.
Thanks to our many years of experience with our whirlwind mill, we also have solutions available for special applications such as the defibration of paper or combined grinding and drying.
Adjustable final finenesses:
The easy adjustment of the grinding upper housingp and the change of rotational speed mean you can flexibly adjust the grinding results, even when the raw material quality fluctuates.
Space-saving:
With its small dimensions and lack of specific foundation requirements, the whirlwind mill can be optimally integrated into your existing plant complex.
Maintenance-friendly:
Due to the screenless design of the whirlwind mill, users benefit from minimal cleaning effort.
Maximum service life:
With its integrated right-left run, the whirlwind mill lets you make optimal use of the service life of grinding tools and wear protection segments.
“From planning to commissioning, we are your all-round partner. Whether you are planning a new plant complex or integrating new equipment into your existing production, with our many years of experience, we can offer you complete solutions from one source!"
Patrick Barthel, Sales Manager Process Technology
From grinding soft to medium-hard bulk materials to defibration of paper, the whirlwind mill covers a wide range of applications.
Discover some selected applications:
If your bulk material is not mentioned here, please contact us! We can respond to your individual wishes and handle different materials under defined process conditions. We also have solutions for special applications, such as aroma-conserving cold grinding or combined grinding and drying.
When designing your mills, we consistently focus on your bulk materials to be processed and your desired final finenesses. We leave nothing to chance: bulk materials have different natural properties and therefore require different grinding processes. In a holistic approach, we at Grenzebach research your bulk materials in our own building materials laboratory in Bad Hersfeld. Following additional realistic tests in our technical center, we then design your customized whirlwind mill.
At Grenzebach, we understand that different bulk materials require different grinding processes. So our additional mill program also covers the grinding of medium-hard to hard bulk materials.
We would be happy to be your process engineering contact for upstream and downstream process stages too.
Grenzebach's vibrating tube mills are the solution for grinding medium-hard to hard, abrasive products such as slag, ashes, fire clay etc.
They are based on the principle of vibration milling with three milling tubes aligned at 60° to each other. The mill achieves high and constant throughputs with low energy consumption. It can be operated continuously as well as intermittently. Throughput rates of up to 20 tons per hour can be achieved. Product temperatures up to 350°C are possible. For feed particle sizes < 10 mm, final grinding of d90 = 50 µm can be achieved depending on the product quality.
With Grenzebach's jet airstream sifter, powder can be separated into three fractions (fine, medium and coarse material) in one step. This is efficient for sifting bulk goods, as well as for the separation of fine material without over-sized grains in all the areas of solid material process engineering. Depending on the application and sifter type, throughputs between 3,000 to 50,000 kg/h can be achieved with product temperatures of up to about 130°C.
The jet airstream sifter can be used for particle sizes up to 3 mm. It is suitable for classifying or extracting dust from powders in the range of 20 - 150 µm.
