Netzsch has released its new PROPHI pre-grinding unit, which grinds coarse feed materials that is difficult to handle in a regular mill.
เครื่องมือที่ใช้วัดความดันโลหิต 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 up to 25 m³/h could be achieved with this machine dimension. The diameter of the grinding media used sometimes ranges from 2.0 – mm.
During development of the pre-grinding unit, a disc agitator was selected because the same net power input yields almost double the grinding chamber quantity than when utilizing a pin agitator. This gives considerably extra grinding physique contacts and a bigger cooling floor for grinding.
With a pre-grinding unit, the particle dimension distribution of a product may be adjusted so that very small grinding media can be utilized 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 more than 50% as in contrast with utilizing traditional pre-dispersion methods.