Netzsch has launched its new PROPHI pre-grinding unit, which grinds coarse feed materials that’s difficult 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 much as 25 m³/h could be achieved with this machine dimension. The diameter of the grinding media used sometimes ranges from 2.0 – mm.
During improvement of the pre-grinding unit, a disc agitator was chosen because the same web energy input yields almost double the grinding chamber volume than when utilizing a pin agitator. This provides significantly extra grinding body contacts and a larger cooling floor for grinding.
With pressure gauge ไฮ ด รอ ลิ ค -grinding unit, the particle dimension distribution of a product could be adjusted in order that very small grinding media can be utilized in the subsequent fine-grinding stage. Tests have proven that process management with the Netzsch PROPHI pre-grinding unit can scale back the particular vitality requirement by more than 50% as in contrast with using classic pre-dispersion techniques.