Rotary Dryer/ Drum Dryer Widely Used For Mining, Building Materials, Metallurgy and Chemical Industry.

                                                                                                         Rotary Dryer

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Rotary Dryer Introduce: 

Rotary Dryer is also called drum dryer, which is handling by bringing it into direct contact with 

a heated gas.The dryer is made up of a large, rotating cylindrical tube, The dryer slopes slightly 

so that the discharge end is lower than the material feed end in order to convey the material through t

he dryer under.

Application of Rotary Dryer:
The Rotary Dryer is applicable for particle materials, and is also applicable for paste and viscous materials which are mingled with particle materials, or materials whose water content is high, Such as coal, coal slurry, slag, sand, silica sand, fly ash, ore powder, sludge, industrial waste, and clay stone. Rotary dryer are widely used in building materials, metallurgy, and chemical industry.

Working Principle of Rotarty Dryer:

Material to be dried enters the dryer, and as the dryer rotates, the material is lifted up by a series

of internal fins lining theinner 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 feed end (known

as cocurrent flow), or toward the feed end from the discharge end (known as countercurrent flow).

The gas streamcan be made up of a mixture of air and combustion gases from a burner, in which 

case the dryer is calleda 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 asan indirectheated type.

Often, indirect heated dryers are used when product contamination is a concern.

Main Technical Parameters: