High Efficient Rotary Drum Dryer for Drying Lignite Coal Powder

High efficient Rotary drum dryer for drying lignite coal powder
Introduction of rotary dryer:
The rotary dryer is atype of industrial dryer employed to reduce or minimize the liquid moisture content of the material.
The dryer is made up of alarge, 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 aseries 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 feed end (known as co-current flow), or toward the feed end from the discharge end (known as counter-current flow). The gas stream can be made up of amixture of air and combustion gases from aburner, in which case the dryer is called adirect 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 dryers are used when product contamination is aconcern. In some cases, acombination of direct-indirect heated rotary dryers are also available to improve the overall efficiency.Working principle:
The sleeve column structure of the rotary drying machine or rotary dryer shortens the dryer length in multiple times. As the heat delivery area is greatly reduced, so is the heat consumption. However, the multiplication heat exchange area increases the heat performance. For those untouchable materials, the multi-drum rotary dryer provides inner smoke tube and annular smoke tube relevantly in the inner drum and external drum. These smoke tubes connect each other through radial tubes to increase high efficiency. It's obvious that hot materials and cold medium, the rotary dryer is also known as sleeve type rotary cooler and kiln dryer.Features:
1. The rotary drying machine or rotary dryer is with high mechanization, strong production capability and continuous operation
2. Excellent and simple structure, steady operating process under resistance of the drum, easy operation
3.Little malfunction, low maintenance cost and power consumption
4. Wide application range and good drying effect.
Technical parameters:Model (mm)Inclination (%)Rotate speed (r/min)Air inlet temperature (°C)Power (kw)Production capacity(t/h)Weight (t)Φ600x60003-53-8≤70030.5-1.52.9Φ800x80003-53-8≤70040.8-2.03.5Φ800x100003-53-8≤70040.8-2.54.5Φ1000x100003-53-8≤7005.51.0-3.55.6Φ1200x100003-53-8≤7007.51.8-514.5Φ1200x120003-53-8≤700112-614.8Φ1500x120003-52-6≤800153.5-917.8Φ1800x120003-52-6≤800185-1225Φ2200x120003-51.5-6≤80018.56-1533Φ2200x180003-51.5-6≤8002210-1853.8Φ2200x200003-51.5-6≤8003012-2056Φ2400x200003-51.5-5≤8003718-3060Φ3000x200003-51.5-5≤8005525-3578Φ3000x250003-51.5-5≤8007532-40104.9
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