First-class and high productivity rotary dryer for coal,limestone,sand

Hot sale rotary dryer:
1.Easy structure;
2.Top-grade raw material;
3.OEM service offered;
4.20 years practice in this line..
Rotary Dryer
Rotary dryer is widely used for drying materials in industries like cement, mine, building materials, chemistry, food and fertilizer, etc.
This rotary drying machine comes with thermocouples on the feeding and discharging device to control the temperature.
Thermometers are also adopted so as to better control the working temperature (generally 350-380°) of the rotary drier.

Components:
Rotary dryer is mainly composed of cylinder, under frame, feeding and discharging devices, transmission device, gear cover, etc.
(Optional auxiliary equipment includes combustion chamber, feeder and discharging device, and dust collection equipment).
Rotary drier manufactured by u s adopts new lifting plate, which is of functions like guiding, current-sharing, and material raising.
The materials are raised and evenly drop so that they are in full contact with heat for better drying efficiency.
Our rotary drier is designed with the best working conditions, which enables it to save 10-15% of energy and increase 10-15% of productivity compared with common dryers.

Working Principle:
The auto-combustion device provides heat resource for our rotary drier, which adopts down-flow heating method.
When the mineral materials are fed into the cylinder, it flows down as a result of gravity. Meanwhile, they are repetitively scattered in the air so that they are in full contact with the hot air. The material is thus dried gradually.


Tecnical parameters:

model
heat direct and sequence
heat direct and retrograde
compound heating
type of material
mineral
HP

ammonium sulphate
phosphorus fertilizer
coal
capacity kg/h
1000
-66
15000
20000
12000
5000
primary moisture %
30
13
6
1.5
5
6.5
final moisture %
15
0.3
1
0.1
0.1
0.1
average dim. mm
6.5
0.05
4.7
0.5-0.7
0.5
5
thickness of material mm
770
800
1890
1100
1500
750
capacity of hot air kg/h
39000
5400
10750
9800
6500
16000
temp. of air in
600
165
500
180
650
570
temp. of material out

42
100
70
80
75
heating style
gas
steam electric+heating
heavy oil
coal fuel furnace
heavy oil
heavy oil
ratio of feed

6.3
7
7.5
7.8
18
rotation speed rpm
4
4
3.5
3
4
2
angel
.
0.04
0.005
0.03
0.05
0.05
0.043
quatity of oar
12
24
12
22
8
16
6
12
dim. of drier m
2.0
1.5
2
2.3
2
0.84
24
0.95
length of drier m
20
12
17< br>15
10
16
driving power kw
22
7.5
15
11
1


Pictures for your reference: