Jiangsu Zhongbo Heavy Machinery Co., ltd

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Three Return Dryer

1. The cost is about 1/6 compare with common type.
2. Moisture of final product is less than 0.5%. It is the first choose for sand and mining processing line.
3. Thermal self-insulation of cylinder is more than 70% (traditional type dryer is only 35%), and the thermal efficiency is 35%.
4. Fuel can adapt coal, oil and gas. Be able to bake bulk, granular and powdery materials below 20mm.

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Product Details

Product Introduction:

Applied for drying iron powder, ore powder and other mixed materials, dry mix mortar, yellow sand, chemical industry, foundry and other raw materials.


Advantages:

1. The dryer is scientific and reasonable, efficient and energy-saving. Materials in the cylinder meet with heat flow to form heat exchange. After testing, the thermal efficiency is much higher than the traditional dryer about 50% level. After putting the equipment into operation, the coal saving effect is remarkable.

2. The machine adopts material and hot air flow drying process, it is wide applied in drying of clay, coal, slag, iron powder and other raw materials, but also suitable for metallurgical, chemical and other departments of all kinds of bulk materials drying. The dryer with compact structure. In the horizontal arrangement of the whole machine, the support wheel is adopted, the size gear drive is cancelled, and the supporting wheel drive is replaced, which makes the installation more convenient, the operation simpler, the operation more reliable, and the running rate higher.

3. The external surface area of the machine is about 30% less than that of the single cylinder rotary dryer, and the outer cylinder has the function of heat preservation and insulation to the inner cylinder, the surface temperature of the outer cylinder is low, the heat loss is less, and the working environment and working conditions are greatly improved while the energy saving is high efficiency.

4. Various design of lifting boards, the organic combination of angle lifting board and ten thousand character lifting board makes the material and hot flue gas exchange more fully, and reduces the mechanism of "wind tunnel" in the dryer barrel.

5. Frequency conversion is adopted to adjust the speed of cylinder body, according to the water content and output requirement of the machine, appropriate speed is adopted to meet the requirements of the next working procedure. Automatic temperature monitoring system makes operation more convenient.


Technical Parameters:

Item

φ2.0×6m

φ2.5×6.5m

φ2.7×7m

φ3×7m

φ3.2×7m

φ3.6×8m

φ4.2×8.5m

Diameter of outer cylinder (m)

2.0

2.5

2.7

3

3.2

3.6

4.2

Length of outer cylinder (m)

6

6.5

7

7

7

8

8.5

Cylinder volume (m³)

18.84

31.89

40.5

49.46

56.26

81.38

118

Rotating speed of cylinder (rpm)

3-10

3-10

3-10

3-10

3-10

3-10

3-10

retention time of materials (min)

12-30

12-30

12-30

12-30

12-30

12-30

12-30

Initial moisture of materials (%)

6-25

6-25

6-25

6-25

6-25

6-25

6-25

Final moisture of materials (%)

≤1

≤1

≤1

≤1

≤1

≤1

≤1

Highest intake air temperature (℃)

750-900 ℃

750-900 ℃

750-900 ℃

750-900 ℃

750-900 ℃

750-900 ℃

750-900 ℃

Production capacity (T/H)

Slag

20-25

25-30

30-35

35-10

40-45

50-65

70-85

Coal ash

10-17

17-21

20-25

23-27

25-30

30-45

45-63

Yellow sand

20-27

25-40

27-45

30-45

35-50

55-75

75-99

Motor type

Yr160m-4

Yr132m-4E

Yr160m-4

Yr160m-4

Yr132m-5E

Yr160m-4E

Yr160m-4E

Motor power (kw)

7.5×2

11×2

7.5×4

7.5×4

11×4

15×4

18.5×4

Reducer type

XWD-6

XWD-6

XWD-6

XWD-6

XWD-6

XWD-8

XWD-8

Velocity ratio of reducer (I)

17-29

17-29

17-29

17-29

17-29 td>

17-29

17-29


Structures:

The three-cylinder dryer is to shorten the size of the dryer body by changing the single cylinder body of the single barrel dryer into the three cylinders that are overlapped together in order to shorten the size of the dryer body. When the machine is working, the material and the hot air flow enter the inner and outer cylinder in turn, after the Z-shape reciprocating flow of the body, the material is dried and then unloaded by fully utilizing the heat energy.

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The cylinder part of the dryer is composed of three inner, middle and outer sleeve arranged horizontally on the same axis, which makes full use of the cross section of the cylinder. The total length of the cylinder is about 30-35 of a single cylinder. As a result, greatly reduce the area and workshop floor area.

The supporting device of the machine is the wheel belt and the supporting wheel on the outer cylinder, which are driven directly by the motor. The cylinder is rotated by friction between the wheel and the belt. The overall structure of the machine is compact, reasonable and simple. In order to facilitate the maintenance and replacement of worn parts, the machine is designed as axial split type in the middle, which is fixed by bolts.


Features:

1. The cost is about 1/6 compare with common type.

2. Moisture of final product is less than 0.5%. It is the first choose for sand and mining processing line.

3. Thermal self-insulation of cylinder is more than 70% (traditional type dryer is only 35%), and the thermal efficiency is 35%.

4. Fuel can adapt coal, oil and gas. Be able to bake bulk, granular and powdery materials below 20mm.

5. Compared with the single drum dryer, the area request reduced by about 50%, the construction investment is reduced by about 50%, and the power consumption is reduced by 60%.

6. Can adjust and control the final moisture content according to the user's request.

7. Low outlet temperature and long service time of dust removal equipment.

8. No need big gear for transmission, use wheel driving.

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