SpeedMill® - Grind Or Mill Inside A Sealed Container 
Using A Hauschild SpeedMixer®

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How to test the particle size?

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Expect a visible reduction in volume after grinding or milling your products. This occurs as the particle sizes reduce and 
compact. under the extreme sheering force generated by any Hauschild SpeedMixer®.

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Traditional use of an industrial sizing gauge / fineness guage / or hegman guage will yield differing / inconsistent results,
even from trained operators. These are finely calibrated metal blocks with a diminishing scale on them like the one in
the photo above. You can measure the particle size against the embossed scale to see what you've acheived.
Doing this over and over will establish how effective you've been. We can visit to demonstrate this and to train your operators. 

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Beyond this, in order to determine a measured particle size, use of an SEM (scanning electron microscope) is required
which also relies upon operator accuracy and strict process control.

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When looking at particle size more often than not they will vary. What you should be analysing is the 'standard deviation'.
If you target is 5 microns, a satndard deviation may look at 3-7microns so here the standard deviation would be two microns.
As 3 and 7 are two away from the 5micron target.

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For accurate, automated and reliable scientific data we fully recommend the use of a TIDAS instrument from Labman Automation. The TIDAS system will automate the product spreading process, then it digitally scans, measures and records the product surface offering consistent and repeatable process control. Find out more by clicking the image or text below.

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Compare the measured results to the original sample. Repeat if necessary until the correct processing speed and time is determined.

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By achieving this you can program any Hauschild SpeedMixer® to achieve a fully repeatable and reproducible process.

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Grinding and Milling Tips

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When dry or wet grinding / milling - Attrician begins immediately. As the Hauschild SpeedMixer begins to rotate,
colissions occur within the material mass. Materials will rub together under extreme sheer force and thus wear down over
time but the friction may cause heat. The higher the speed the higher the sheering force.

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If you choose to use the Hauschild pulverising ring set or SpeedMill® ceramics further energy is used to assist the grinding
or milling process. Kinetic energy will create heat so our tip is to pierce a central small hole in the lid to allow pressure
to escape. If you have sub micron particles then use an inner lid seal with an offset hole in it so the path of the
escaping pressurised gas flows through a physical valve. This will reduce particle escape but not eliminate it.
Using a cup in cup methos will eliminate this but the better option is to use a VAC-P Hauschild SpeedMixer
with a sealable vacuum chammber. When the process is finished purge the air and use the exhaust
manifold on the rear to couple up to your internal fume extraction facilites.      

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Also monitor and regulate temperature change during processing so take the temperature of the materials before and after processing. Reduce the speed if needed and extend the time to strike a blance.

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SpeedMill® starter kits & our ceramic grinding media are
NOW available to purchase from our online store.