... pulverizing chamber via the feeder. Under the high pressure air flow, the grains collide and impact each other. The pulverized particles ... force will be collected into the collector with the air flow while those that suffer greater centrifugal force than the traction ... , aluminum oxide, barite, graphite, magnesium powder, fire-retardant, etc. HM Series Fluidized Bed Split Air-Flow Pulverizing Grader