ROTARY DRYER CONSTRUCTION

The dryer is made up of large rotating cylindrical tube, supported by two nos. riding rings(tyres) running over a set of support rollers with a stationary feed and a discharge hood, mounted over a channel frame with suitable sealing arrangement between the shell ends and hoods. The dryer slopes slightly so that the discharge end is lower than the material feed end in order to convey the material through the dryer under gravity. Fabricated in carbon, stainless steel and MS + rubber lined with flights or lifters are welded or bolted internally to produce the cascade of particles falling through hot gas stream. The mechanical lifting of the material allows drying the materials from filter cake to coarse minerals through hot gas stream, also helps in breaking-up lumps for uniform drying. The length of the drum may range from 4 to 10 times of its diameter and usually operates with 12 to 15% of their volume filled with the material. The Hot Air Generator, the feeding equipment and the dust collection equipments like cyclone and bag filter are the part of the Rotary Dryer system.