Descriptions:Rotary drum dryer (the dryer drum) is a very wide range of drying equipment in the chemical industry,light industry,coal,building materials and mining and metallurgy industry occupies an important position.In recent years,rotary drum dryer has developed rapidly,many new forms. Its comprehensive features,mainly in three aspects,namely:large-scale equipment specification,structure type diversification and energy efficiency and automation.
Principle:When the damp raw material is fed from one terminal,it is turned over through blades that are distributed inside the cylinder and will be distributed uniformly in the drier and contact fully with the countercurrent hot air.In this way, the process of heat conduction is increased.During the period of dry,under the effect of incine blades and hot air stream,raw material can be moved to the star section of drier and discharged from discharged form discharging valve .
Feature:1.High in the etent of merchanization and strong in production capacity;
2.The resistance for fluid passing through the cylinder is small.The consumption of power and energy is low;
3.It has strong adaptability to the properties of raw material.The operation is stable.The cost of operation is cheap;
4.The uniformity of dried substance is good .
Applications: It is suitable for drying the following raw material.They are granules with heavy specific gravity in chenmical industry,mine industry,metallury industry such as ore,slag,coal,metallicpowder,phosphorus fertilizer,ammonia sulfate.Moreover for raw materials that are granules with special requirements, such as HP vesicant,less,light calcium carbonate,active white earth,magnetic powderm,graphite,lag of medicine and raw materials that need low temperature and in batch continuously .
Technical parameters
Item(m) |
Productive capacity(t/h) |
Revolution(r/min) |
Motor power(kw) |
Install angle(°) |
Temp.of final |
Dia1.0x5.0 |
0.5~1.2 |
0.6~6 |
4 |
3~5 |
≤1.5% |
Dia1.2x6~10 |
1.5~3 |
0.6~6 |
5.5 |
3~5 |
≤1.5% |
Dia1.5x12~18 |
3~5.5 |
0.6~6 |
15 |
3~5 |
≤1.5% |
Dia1.8x12~18 |
5~6.5 |
0.6~6 |
18.5 |
3~5 |
≤1.5% |
Dia2.2x12~22 |
7~12 |
0.6~6 |
22 |
3~5 |
≤1.5% |
Dia2.4x15~20 |
9~15 |
0.6~6 |
30 |
3~5 |
≤1.5% |
Dia3.0x25 |
16 |
0.6~6 |
55 |
3~5 |
≤1.5% |
Applications
Model |
Direct heating clockwise way |
Direct heating clockwise way |
Direct heating counter clockwise way |
Direct heating counter clockwise way |
Compound heating |
Compound heating |
Kinds of raw material |
Ore |
HP vesicant |
Slag of blast furnace |
Ammounium sulphate |
Phosphorus fertilizer |
Coal |
Amount to be treated(kg/h) |
1000 |
466 |
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 diameter(mm) |
6.5 |
0.05 |
4.7 |
0.5-1.7 |
0.5 |
5 |
Bulk density of raw material(kg/m³) |
770 |
800 |
1890 |
1100 |
1500 |
750 |
Amount of hot air(kg/h) |
39000 |
5400 |
10750 |
9800 |
6500 |
16000 |
Temperature of air inlet(ºC) |
600 |
165 |
500 |
180 |
650 |
570 |
Temperature of raw material air outlet(ºC) |
|
42 |
100 |
70 |
80 |
75 |
Way of heating |
Gas |
Steam,electric heating |
Heavy oil |
Coal fuel hot air furnace |
Heavy oil |
Heavy oil |
Loading effciency(%) |
|
6.3 |
7 |
7.5 |
7.8 |
18 |
Revolution(rpm) |
4 |
4 |
3.5 |
3 |
4 |
2 |
Gradient(m/m) |
0.04 |
0.005 |
0.03 |
0.05 |
0.05 |
0.043 |
Quantity of stirring-up rake |
12 |
24 |
12 |
22 |
8 16 |
6 12 |
Diameters of drier(m) |
2.0 |
1.5 |
2 |
2.3 |
0.84 2 |
0.95 2.4 |
Length of drier(m) |
20 |
12 |
17 |
15 |
10 |
16 |
Driving power(kw) |
22 |
7.5 |
15 |
11 |
11 |
15 |