... ,drum dryer,dryer 1.divide Drum or Bent-tube type 2.dry sawdust,straw,oil palm fiber 3. ... ,drum dryer,dryer 1.divide Drum or Bent-tube type 2.dry sawdust,straw,oil palm fiber 3. ... soybean residue, such as drying.Third ,from drum-type drier of the bodies ,It can be divided into ... direct, indirect heating, ventilation tube heating, indirect heating steam pipe, composite structures and ...