UNIT I
optimum stageof harvest. Threshing - traditional methodsmechanical threshers -types-principles and operation-
moisture content -measurement -directand indirect methods
UNIT II
Drying - principles and theory of drying
Hot air drying - methods of producing hot air -
selection - construction, operation and maintenance of dryers - Design of dryers
UNIT III
Principles - air screen cleaners - adjustments
cylinder ,spiral separator - magnetic separator
inclined belt separator effectiveness of separation and performance index.
UNIT IV
maize sheller, husker sheller for maize ,groundnut decorticator
material handling belt conveyor -screw,chain conveyor
bucket elevators - pneumatic conveying.
UNIT V
parboiling of paddy - methods - merits and demerits
rice polishers -types - constructional details - polishing -layout of modern rice mill -
oil seed processing - millets processing.