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

1. Lower bolster has three types: fixed, zoom and floating.

2. The structure is simple, replacement is convenient and won’t hurt cylinder.

3. 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