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Rotary kiln Dryer is used in the pre-burning of hard ferrite powder, it can also be applied in cement, metallurgy, chemical industry and so on. The equipment consists of main kiln and its supporting transmission device, cooling pipe, fuel system, electrical control, two times inlet air device, exhaust dust removal device and preheating kiln body. With over-temperature alarm, overload alarm, operating temperature control, kiln oxygen can be adjusted and other functions.
Principle
Wet material from one end of the dryer, the inside of the tube is cloth copy of the plate, the material in the dryer evenly distributed and dispersed, and with the flow (countercurrent) hot air full contact, speed up the drying heat transfer, mass transfer drive. In the drying process, the material with the inclination of the copy plate and the role of hot air, can be controlled to move to the dryer another part of the star-shaped discharge valve discharged finished products.
Application
Applicable to chemical, mining, metallurgy and other industries large particles, than major materials drying.
such as: Ore, blast furnace slag, coal, metal powder, phosphorus, ammonium sulfide.
Drying of powdered, granular materials with special requirements. Such as: Foaming agent, Lees Slag, light calcium carbonate, activated clay, magnetic powder, graphite, dregs.
Features
Requires low-temperature drying, and requires a large number of continuous drying materials.
The drum dryer is of high mechanization degree and large production capacity.
the fluid through the cylinder body resistance is small, the function consumes low.
The adaptability of the material characteristics is strong.
stable operation, low cost of operation, good uniformity of product drying.
Technical Specifications
| Form |
Direct heating |
Direct heating |
Direct- |
Direct- |
Composite heating |
Composite heating |
|
Item Type |
Ore |
HP Foaming Agent |
Blast furnace Slag |
Ammonium sulfide |
Phosphate fertilizer |
Coal |
|
Processing Capacity (kg/h) |
1000 |
466 |
15000 |
20000 |
12000 |
5000 |
|
Initial water content (%) |
30 |
13 |
6 |
1.5 |
5 |
6.5 |
|
Final water content (%) |
15 |
0.3 |
1 |
0.1 |
0.1 |
0.1 |
|
Average particle size (mm) |
6.5 |
0.05 |
4.7 |
0.5-1.7 |
0.5 |
5 |
|
Material stacking weight (KG/M3) |
770 |
800 |
1890 |
1100 |
1500 |
750 |
|
Hot air Volume (kg/h) |
39000 |
5400 |
10750 |
9800 |
6500 |
16000 |
|
Inlet gas temperature (℃) |
600 |
165 |
500 |
180 |
650 |
570 |
|
Material outlet temperature (℃) |
|
42 |
100 |
70 |
80 |
75 |
|
Heating method |
Gas |
Steam Type Electric Heating |
Heavy |
Coal stove |
Heavy |
Heavy |
|
Loading coefficient |
|
6.3 |
7 |
7.5 |
7.8 |
18 |
|
Rotational speed (RPM) |
4 |
4 |
3.5 |
3 |
4 |
2 |
|
Inclination |
0.04 |
0.005 |
0.03 |
0.05 |
0.05 |
0.043 |
|
Number of copy Plates |
12 |
24 |
12 |
22 |
Inner cylinder outside 8 |
6 12 |
|
Dryer diameter (m) |
2.0 |
1.5 |
2 |
2.3 |
Outer cylinder 2 |
Outer cylinder 2.4 |
|
Dryer Length (m) |
20 |
12 |
17 |
15 |
10 |
16 |
|
Drive power (kw) |
22 |
7.5 |
15 |
11 |
11 |
15 |
CN