Netzsch has released its new PROPHI pre-grinding unit, which grinds coarse feed material that is difficult to deal with in a regular 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 speed range of 8–12 m/s, a product throughput of as much as 25 m³/h could be achieved with this machine size. The diameter of the grinding media used sometimes ranges from 2.zero –4.0 mm.
During development of the pre-grinding unit, a disc agitator was chosen as a outcome of the identical internet energy input yields virtually double the grinding chamber volume than when utilizing a pin agitator. This provides significantly extra grinding physique contacts and a bigger cooling floor for grinding.
With ไดอะแฟรม ซีล -grinding unit, the particle size distribution of a product could be adjusted in order that very small grinding media can be used in the subsequent fine-grinding stage. Tests have proven that process control with the Netzsch PROPHI pre-grinding unit can cut back the particular power requirement by more than 50% as in contrast with utilizing classic pre-dispersion techniques.