Netzsch provides pre-grinding unit

Netzsch has launched its new PROPHI pre-grinding unit, which grinds coarse feed materials that is troublesome to deal with in a standard mill.
The PROPHI 20 is a disc agitator bead mill modified for coarse grinding with high throughput and a grinding chamber volume of approx. 20 litres. In the peripheral velocity range of 8–12 m/s, a product throughput of as a lot as 25 m³/h could be achieved with this machine measurement. The diameter of the grinding media used typically ranges from 2.zero –4.0 mm.
During improvement of the pre-grinding unit, a disc agitator was chosen as a end result of the identical internet power enter yields virtually double the grinding chamber quantity than when utilizing a pin agitator. Light provides considerably extra grinding physique contacts and a bigger cooling surface for grinding.
With a pre-grinding unit, the particle size distribution of a product may be adjusted so that very small grinding media can be utilized in the subsequent fine-grinding stage. Tests have proven that process management with the Netzsch PROPHI pre-grinding unit can scale back the specific power requirement by greater than 50% as in contrast with using classic pre-dispersion methods.
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