Rotary Drum

Rotary drums are used separately:

• for Scalping 
  removing oversized rejects (rubble separation), 
  for intake precleaning at high capacity.

• for Grading
  removing small kernels (seconds),
  for malting barley
  for separation by grades of seed, coffee or other grains, at a lower throughput.

                     grading process                                                        pre cleaning process

                                                                                                                                   (Scalping only)