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Product details
summary
The rotary kiln dryer is used for pre firing hard ferrite powder and can also be applied in industries such as cement, metallurgy, and chemical engineering. The equipment consists of a main kiln and its supporting transmission device, cooling pipes, fuel system, electrical control, secondary air inlet device, exhaust and dust removal device, and preheating kiln body. It has functions such as over temperature alarm, overload alarm, automatic control of working temperature, and adjustable oxygen in the kiln.
principle
After the wet material is fed into one end of the dryer, it is evenly distributed and dispersed inside the dryer under the flipping of the evenly distributed plate reader in the inner cylinder, and fully contacts with the hot air flowing in parallel (counter current), accelerating the heat and mass transfer driving force of drying. During the drying process, the material can be controlled to move to the star shaped discharge valve in the other section of the dryer under the action of the inclined plate reader and hot air flow, and the finished product is discharged.
application
Suitable for drying large particles and heavy materials in industries such as chemical, mining, and metallurgy.
For example: ore, blast furnace slag, coal, metal powder, phosphate fertilizer, ammonium sulfate.
Drying of powdered and granular materials with special requirements. Such as foaming agent, distiller's residue, light calcium carbonate, activated clay, magnetic powder, graphite, and medicinal residue.
characteristic
Materials that require low-temperature drying and require continuous drying in large quantities.
The rotary dryer has a high degree of mechanization and a large production capacity.
The fluid has low resistance and low functional consumption when passing through the cylinder.
Has strong adaptability to material characteristics.
Stable operation, low operating costs, and good uniformity of product drying.
Technical specifications
| form |
Direct heating |
Direct heating |
Direct heating |
Direct heating |
Composite heating |
Composite heating |
|
Type of Material |
mineral |
HP foaming agent |
Blast furnace slag |
Ammonium sulfate |
phosphate fertilizer |
coal |
|
Processing capacity (kg/h) |
1000 |
466 |
15000 |
20000 |
12000 |
5000 |
|
Initial moisture 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 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 |
coal gas |
Steam electric heating |
heavy oil |
Coal fired hot blast stove |
heavy oil |
heavy oil |
|
Loading coefficient |
|
6.3 |
7 |
7.5 |
7.8 |
18 |
|
Rotational speed (rpm) |
4 |
4 |
3.5 |
3 |
4 |
2 |
|
Tilt angle |
0.04 |
0.005 |
0.03 |
0.05 |
0.05 |
0.043 |
|
Number of copied boards |
12 |
24 |
12 |
22 |
Outer side of inner cylinder 8 |
6 12 |
|
Drier diameter (m) |
2.0 |
1.5 |
2 |
2.3 |
Outer tube 2 |
Outer tube 2.4 |
|
Drying machine length (m) |
20 |
12 |
17 |
15 |
10 |
16 |
|
Drive power (kw) |
22 |
7.5 |
15 |
11 |
11 |
15 |
|
|
|
|
|
|
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