... speed jet strem form strong rotational flow in the grinding chamber, from this, the centrifugal force make powder particles do high ... sensitivity and lower melting point because the temperature fell with the adiabatic expansion of the compressed-air.• No dust leakage ... 9. Bag Collector 10. Draught Fan Usage: Widely used in the grind in chemical, pesticide, light, food, medicine, nonmetal mine, cosmetic ...