Netzsch has released its new PROPHI pre-grinding unit, which grinds coarse feed material that is troublesome to deal with in a normal 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 vary of 8–12 m/s, a product throughput of up to 25 m³/h can be achieved with this machine dimension. เกรดวัดแรงดัน of the grinding media used sometimes ranges from 2.zero –4.0 mm.
During เพรสเชอร์เกจน้ำ of the pre-grinding unit, a disc agitator was chosen because the identical web energy enter yields nearly double the grinding chamber quantity than when using a pin agitator. This gives considerably more grinding body contacts and a bigger cooling surface for grinding.
With a pre-grinding unit, the particle size distribution of a product may be adjusted so that very small grinding media can be utilized within the subsequent fine-grinding stage. Tests have shown that process control with the Netzsch PROPHI pre-grinding unit can reduce the specific power requirement by more than 50% as in contrast with using classic pre-dispersion systems.
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