Rotary Kiln

Rotary Kiln
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Rotary Kiln

Rotary Kiln

Cement experts can not be too familiar with the rotary kiln, which is merely a rotating drum that isset at a slight angle to the horizontal. This seemingly simple set-up, however,is often thought of as the heart of cement plant.

A rotary kiln is commonly used to produce cement clinker. It plays a criticalrole in the dry process of cement manufacture. The process taking place in a cement kiln is raterstraightforward, that is, to bring the fine powdered limestone and clay to hightemperatures for calcination.

We have been supplyingcement professionals with high-quality rotary kiln for more than 5 decades.With a production ability of 1000 to 5000 tons per day, our cement kiln canmeet your daily needs on the cement production line while consuming littlepower and delivering high stability.

Where to Use
Cement plant, steel plant, chemical plant, waste incineration plant

Rotary Kiln Dimension
φ3.2×48m-φ4.8×74m

φ4.8×74m().jpg

Advantages
1. High Energy Efficiency
To control the kiln’s axial motion, the hydraulic thrust device isused. High-precision metering pump, flow control valve, and graphite seal arealso utilized to ensure high energy efficiency.
2. Widespread Applications

This cement kiln is widely used in building material, metallurgy, environmentalprotection, and chemical applications.

Working Principle
Cement raw material is fed into the upper end of the kiln. As the kiln isrotated, the material moves slowly down the kiln through a calcining zone and then a clinkering zone, and isthereafter discharged through the discharge end of the kiln into a cooler.

Fuel is injected into the drum from its lower end. As the fuel is burned in thedrum chamber, a large amount of heat is produced to sinter the cement rawmaterials. As hot air keeps rising along the drum chamber, it ends up beingemitted to the atmosphere via the chimney.

Structure
The rotary kiln is made of drum, support bearing, hydraulic thrust device, transmission,movable kiln head, kiln end seal, and pulverized coal injection device. Thekiln body is slightly inclined to the horizontal, and is supported by hydraulicthrust roller and roller bearing.

To ensure proper functioning of the kiln even when the main power supply is cutoff, we add auxiliary drive to the kiln that prevents kiln deformation.Advanced technologies ensure reliable seal at both lower and upper ends of thekiln.

Technical Specifications

Specification(m)

φ3.2×48

φ3.2×50

3.3×52

φ4×60

φ4.2×60

φ4.3×62

φ4.3×64

φ4.5×66

φ4.7×72

φ4.8×70

φ4.8×72

φ4.8×74

Production Capacity (t/d)

1000

1200

1200

2500

2800

3000

3200

4000

5000

5000~5500

5000

5000

Kiln Inclination (%)

3.5

3.5

3.5

3.5

3.5

3.5

4

3.5

4

3.5

4

4

Number of Supports (pcs)

3

3

3

3

3

3

3

3

3

3

3

3

Kiln Rotational Speed

Thrust Roller

Mechanical

Hydraulic

Hydraulic

Hydraulic

Hydraulic

Hydraulic

Hydraulic

Hydraulic

Hydraulic

Hydraulic

Hydraulic

Hydraulic

Kiln Rotary Speed Main Drive (r/min)

0.375-3.75

0.398-3.975

0.391-3.91

0.396-3.96

0.4165-4.165

0.398-3.98

0.449~4.49

0.41~4.1

0.45-4.5

0.4~4.0

0.403~4.03

0.35-4

Slow Drive(r/min)

16.6

11.585

8.82

8.56

10.35

9.9

8.86

11.65

12.6

11.45

11.47

8.52

Main Drive

Electric Motor

Type

ZSN4-280-21B

ZSN4-280-11B

ZSN4-315-082

ZSN4-355-092

ZSN4-355-12

ZSN4-355-12

ZSN4-355-12

ZSN4-400-22

ZSN4-450-092

ZSN4-400-22

ZSN4-400-22

ZSN4-400-092

Rated Power(kw)

160

190

190

315

420

420

450

560

710

630

630

630

Speed Range(r/min)

100-1000

150-1500

100-1000

100-1000

100-1000

100-1000

100-1000

100~1000

100-1000

100~1000

100~1000

150-1500

Rated Voltage(v)

440

440

440

440

440

440

440

660

660

660

660

660

Reducer

Type

NZS1240-28

ZL130-16

ZSY500-28

ZSY630-35.5

ZSY710-35.5

ZSY710-35.5

JH630C-SW305-25

JH800C-SW306-35.5

ZSY710-28

JH800C-SW306-31.5

YNS1760-31.5VDR

JH710C-SW305-40

Velocity Ratio

27.469

40.85

27.707

34.601

35.526

35.714

24.365

34.069

28

30.876

30.365

42.226

Auxiliary Drive

Electric Motor 

Type

Y180L-4

Y180L-4

Y180L-4

Y200L-4

Y225S-4

Y225S-4

Y225S-4

Y250M-4

Y250S-4

Y250S-4

Y280S-4

Y250M-4

Rated Power(kw)

22

22

22

30

37

37

37

55

75

75

75

55

Rated Rotational Speed (r/min)

1470

1470

1470

1470

1480

1480

1480

1480

1480

1480

1480

1480

Rated Voltage(v)

380

380

380

380

380