Rotary kiln
Introduction
Rotary kiln is suitable to dry metallic and nonmetallic mineral, clay in cement industrial and coal slime in coal mine, etc. Rotary kiln can be widely used to dry various materials.
Features
Lower bolster has three types: fixed, zoom and floating.
The structure is simple, replacement is convenient and won’t hurt cylinder.
Control the rotating speed by buncher, DE machine and frequency variable motor.
Application
Materials produced using rotary kilns include: cement, lime, refractories, metakaolin, titanium dioxide, alumina, vermiculite, iron ore pellets. They are also used for roasting a wide variety of sulfide ores prior to metal extraction.
Working principle
The kiln is a cylindrical vessel, inclined slightly to the horizontal, which is rotated slowly about its axis. The material to be processed is fed into the upper end of the cylinder. As the kiln rotates, material gradually moves down towards the lower end, and may undergo a certain amount of stirring and mixing.
Technical parameters
Model Straight cylinder /dry Dry process Expanded hot end/dry process Dry process Dry process
Specification φ1.9/φ1.6×36 φ2.4×40 φ2.4/φ2×40 φ2.8/φ2.4×50 φ3.5×70
Slope of kiln shell 4% 4% 3.50% 4% 4%
Output (t/h) 2.5～3 6～7 4.5～5.5 7.5～8.5 20～22
Rotation speed (r.p.m) 0.53～1.59 0.173～1.73 0.42～1.25 0.11～1.07 0.5～1.27
Number of supports 3 3 3 3 4
Model of motor JZT2-72-4 JZS2-8-2 JZT382－4 JZS2-9-2 JR126-6
Power of motor(kw) 30 4～40 4～40 6～60 155
Scope of rotation speed(r.p.m) 400～1200 160～1600 400～1200 120～1200 350～980
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