Netzsch 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 high throughput and a grinding chamber quantity of approx. 20 litres. In the peripheral speed vary of 8–12 m/s, a product throughput of up to 25 m³/h could be achieved with this machine size. The diameter of the grinding media used sometimes ranges from 2.0 – mm.
During growth of the pre-grinding unit, a disc agitator was selected as a outcome of the identical web energy input yields almost double the grinding chamber volume than when using a pin agitator. This provides significantly extra grinding body contacts and a larger cooling floor for grinding.
With a pre-grinding unit, the particle size distribution of a product could be adjusted so that very small grinding media can be utilized in the subsequent fine-grinding stage. เกจวัดแรงดัน have proven that course of control with the Netzsch PROPHI pre-grinding unit can reduce the particular vitality requirement by greater than 50% as compared with using traditional pre-dispersion techniques.