... .2.Agriculture, forage, fertilizer industry, such as straw, grasses, and sawdust and tree leaves, fish meal, corn, rice, wheat, corn sauce ... Rotary dryer mainly composed of shell, back and forth supporting device, driving device, feeding and discharging unit and gear cap. 3. Maize Flour Dryer ... be separated from the material by hot air-flow and changed into vapour to be discharged into the atmosphere. ...