Netzsch offers pre-grinding unit

Netzsch has launched its new PROPHI pre-grinding unit, which grinds coarse feed material that’s tough to handle in a standard mill.
The PROPHI 20 is a disc agitator bead mill modified for coarse grinding with excessive throughput and a grinding chamber quantity of approx. 20 litres. In the peripheral velocity vary of 8–12 m/s, a product throughput of as a lot as 25 m³/h can be achieved with this machine measurement. The diameter of the grinding media used typically ranges from – mm.
During improvement of the pre-grinding unit, a disc agitator was chosen as a result of the identical web power enter yields virtually double the grinding chamber quantity than when using a pin agitator. Feast gives significantly extra grinding physique contacts and a bigger cooling floor for grinding.
With a pre-grinding unit, the particle dimension distribution of a product may be adjusted so 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 greater than 50% as compared with using classic pre-dispersion techniques.