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 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 can be achieved with this machine dimension. The diameter of the grinding media used sometimes ranges from 2.0 –4.zero mm.
During improvement of the pre-grinding unit, a disc agitator was chosen because the identical internet energy input yields virtually double the grinding chamber quantity than when using a pin agitator. This offers considerably extra grinding physique contacts and a bigger cooling floor for grinding.
With เกจแรงดัน -grinding unit, the particle size distribution of a product can be adjusted so that very small grinding media can be utilized within the subsequent fine-grinding stage. Tests have shown that process management with the Netzsch PROPHI pre-grinding unit can cut back the specific power requirement by greater than 50% as compared with utilizing traditional pre-dispersion systems.
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