What are the rotary dryers?

Answer 1

The rotary dryer is a type of industrial dryer employed to reduce or minimize the liquid moisture content of the material. it is handling by bringing it into direct contact with a heated gas.The dryer is made up of a large,rotating cylindrical tube,usually supported by concrete columns or steel beams.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.Material to be dried enters the dryer,and as the dryer rotates,the material is lifted up by a series of internal fins lining the inner wall of the dryer.When the material gets high enough to roll back off the fins,it falls back dowm to the bottom of the dryer,passing through the hot gas stream as it falls.This gas stream can either be moving toward the discharge end from the feed end(know as co-current flow),or toward the feed end from the discharge end (known as counter-current flow).The gas steram can be made up of a mixture of air and combustion gases from a burner,in which case the dryer is called a direct heated dryer.Alternatively,the gas stream,may consist of air or another(sometimes inert)gas that is preheated.When the gas stream is preheated by some means where burner combustion gases do not enter the dryer,the dryer known as an indirec-heated type.

Answer 2

Rotary dryers are industrial drying systems that use a rotating drum to efficiently dry materials such as grains, minerals, or chemicals through direct contact with hot air. The rotation helps to evenly distribute heat and moisture for thorough drying, making them commonly used in industries like agriculture, mining, and manufacturing.