SURFACE TREATING METHOD OF THE SOLID PARTICLES AND APPARATUS THERE FOR

摘要

The impactor comprises an outer casing (1) containing a high speed rotor (4) with typically ten transverse flat blades (5) with a peripheral speed of up to 150m/second revolving inside a toothed collision ring (8). A recirculating air stream is generated by the turbine effect of the blades on a tangential outlet (19) through the casing which is connected by a tube (13) to a central inlet aligned with the rotor shaft (6). A preprocessor (32) coats the mother particles with child paritcles by electrostatic or other means and feeds them to a storage hopper (17) with a metering feeder, which supplies a feed hopper (14) connected by a duct (15) to the recirculating tube (13).