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Description:

    Rotary drum dryer is widely used in building materials,metallurgy,chemicals,industrial drying slag cement limestone,coal,slag and other materials.It consists of rotary body,lifting plate,gear,support equipment and seals and other components.With a reasonable structure,well-made,high-yield,low energy consumption,easy operation and so on.

Features:

    1.The cylinder protect itself,thermal efficiency can up to 95%.The whole length of the dryer reduced to 50% approximately than mono-cylinder and reduced land investment to 50% approximately.

    2.Cylinder adopts heat-resistant and wear-resistant steel plate welding with long service life and easy maintenance.High thermal efficiency,temperature of outer cylinder is 60 or below(temperature of outer mono-cylinder is high to150℃)。

    3.Low temperature of outlet,long-service of dust removal machine.It also can be directly connected to air box pulse bag filter.

    4.Without gear and pinion drive,but wheel rotation applied,level operation of the complete machine makes system simple and reasonable.

    5.Air heater could match boiling furnace,or oil furnace can also be applied,which can dry materials with size below 20mm.

    6.Final moisture index can be adjusted according to requirements of customers.

Working Principle:

    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 down 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 end(known as counter-current flow).The gas stream 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 indirect-heated type.Often,indirect heated dryer are used when product contamination is a concern.

Specification: