Netzsch provides pre-grinding unit

First has launched its new PROPHI pre-grinding unit, which grinds coarse feed material that’s difficult to handle in a regular mill.
The PROPHI 20 is a disc agitator bead mill modified for coarse grinding with excessive throughput and a grinding chamber volume of approx. 20 litres. In the peripheral pace vary of 8–12 m/s, a product throughput of up to 25 m³/h may be achieved with this machine dimension. The diameter of the grinding media used usually ranges from 2.0 –4.0 mm.
During development of the pre-grinding unit, a disc agitator was selected because the same web energy enter yields nearly double the grinding chamber quantity than when using a pin agitator. This provides considerably more grinding physique contacts and a bigger cooling floor for grinding.
With a pre-grinding unit, the particle size distribution of a product can be adjusted in order that very small grinding media can be utilized in the subsequent fine-grinding stage. Tests have shown that process management with the Netzsch PROPHI pre-grinding unit can scale back the particular energy requirement by more than 50% as in contrast with utilizing classic pre-dispersion techniques.

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