Wet material from the dryer is put into one end of the inner cylinder cloth copy turning plate reader, the homogeneous distribution of material in the dryer with the dispersion, and contact and full flow (countercurrent) hot air, speed up the drying mass Heat, spread to the driving force. During the drying process, the material can be regulated to move to the other star discharge valve of the dryer to discharge the product under the action of the tilting plate and the hot air flow.
◎ chemical, mining, metallurgy and other industries large particles, dry material than the major, such as: mines, blast furnace slag, coal, metal powder, phosphate fertilizer, ammonium sulfate.
◎For the drying of powder and granular materials with special requirements, such as: HP foaming agent, distiller’s grains, light calcium carbonate, activated clay, magnetic powder, graphite, and dregs.
◎Requires low-temperature drying, and large batches of continuous drying materials.
◎ Rotary dryer has a high degree of mechanization and a large production capacity.
◎ The resistance of the fluid through the cylinder is small and the function consumption is low.
◎ The adaptability to material properties is relatively strong.
◎ Stable operation, low operating cost, and good product drying uniformity.
model |
Direct heating downstream |
Direct heating downstream |
Direct heating countercurrent |
Direct heating countercurrent |
Composite heating |
Composite heating |
Material type |
ore |
HP foaming agent |
Blast furnace slag |
Thiammonium |
Phosphate fertilizer |
coal |
Processing capacity (kg/h) |
1,000 |
466 |
15000 |
20000 |
12000 |
5000 |
Water content (%) |
30 |
13 |
6 |
1.5 |
5 |
6.5 |
Final moisture 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 accumulation weight (kg/m 3 ) |
770 |
800 |
1890 |
1100 |
1500 |
750 |
Hot air volume (kg/h) |
3900 |
5400 |
10750 |
9800 |
6500 |
16000 |
Inlet gas temperature ( oC) |
600 |
165 |
500 |
180 |
650 |
570 |
Material outlet temperature ( o C) |
42 |
100 |
70 |
80 |
75 |
|
heating method |
gas |
Steam heating |
heavy oil |
Coal hot stove |
heavy oil |
heavy oil |
Loading factor |
6.3 |
7 |
7.5 |
7.8 |
18 |
|
Speed (rpm) |
4 |
4 |
3.5 |
3 |
4 |
2 |
Tilt |
0.04 |
0.005 |
0.03 |
0.05 |
0.05 |
0.043 |
Copy board number |
12 |
twenty four |
12 |
twenty two |
Inner cylinder outer 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) |
twenty two |
7.5 |
15 |
11 |
11 |
15 |