Netzsch has released its new PROPHI pre-grinding unit, which grinds coarse feed material that’s troublesome to handle in a regular 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 speed range of 8–12 m/s, a product throughput of as much as 25 m³/h may be achieved with this machine measurement. The diameter of the grinding media used usually ranges from 2.0 –4.zero mm.
During improvement of the pre-grinding unit, a disc agitator was selected because the identical net energy input yields almost double the grinding chamber volume than when utilizing a pin agitator. เกจวัดแรงดันแก๊สco2 provides significantly extra grinding body contacts and a larger cooling surface for grinding.
With a pre-grinding unit, the particle dimension distribution of a product can be adjusted in order that very small grinding media can be used in the subsequent fine-grinding stage. Tests have shown that course of control with the Netzsch PROPHI pre-grinding unit can reduce the precise energy requirement by greater than 50% as in contrast with using traditional pre-dispersion techniques.
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