TPQ Jet Mill

The TPQ is a spiral jet mill designed for dry grinding soft to medium-hard materials.
A number of grinding nozzles generate an air vortex that rotates at high speed in the grinding chamber. The feed material is fed
to the grinding chamber via an injector. The feed product circulates close to the nozzle ring and thus gets caught up repeatedly
in the air jets exiting the nozzles. Communition is result of inter-particle collision caused by the particles flowing at
different speeds in the nozzle jet. Because of the free vortex, a classifying effect is generated, meaning that only fine
particles can exit the mill through the center and be collected in a cyclone or filter. Coarse particles remain the grinding
chamber until such time as they have reached the desired fineness.
Shanghai Rainbow’s spiral jet mills are designed with special geometry of the mill housing in the area of the discharged, which
contributes towards a finer classification effect and a sharp top-cut.The mill settings can be adjusted by varying the grinding
air flow rate, feeding rate, nozzle angle and the grinding gas pressure.