... material.Auxiliary equipment in ore dressing line: 1, Trough Feeder or Vibrating Feeder: feeding raw material to jaw crusher. 2, ... fit the feeding size of ball mill. 3, Pendulum Feeder or Electric Magnetic Vibrating Feeder: feeding for ball mill. 4, Spiral Classifier ... separating process):mixing gringed raw material with addit 6, Filter or Filter Press 7, Concentrator(optional) 8, Rotary Dryer: drying ...