Cement production line/cement rotary kiln

Rotary dryer is used widely. It can be used to dry construction sand, abandoned tailings, new energy material, ore, powder and coal. The dry selection shall consider the local fuel, place and environmental protection.

Rotary kiln

Type

Technical parameters

Reduction drive

Main motor

Support

quantity

Weight

Rotation

speed (r/min)

Obliquity

(%)

Output

(t/h)

Type

Ratio

Type

Power

(KW)

Rotation

speed

(r/min)

1.9/1.6*36

0.53-1.59

4

2.5-3

JZQ750-I

48.85

JZT-72-4

30

1200/400

3

53

2.1/1.8*36

0.5-1.51

4

4

UT2-110

163.36

JZS-81

30/10

1410/470

3

75

2.2*50

0.125-1.25

3.5

5

ZS145-11

157

YCT280-4A

30

1320/132

3

130.71

2.5*50

0.516-1.549

3.5

8

ZS165-7

99.96

YCT355-4A

55

1320/140

3

167.5

3*48

0.3309-3.309

3.5

28

ZI130-14

32.11

ZSN4-250-21B

90

1000/100

3

237

3.2*50

0.398-3.975

3.5

42

ZI130-16

40.85

ZSN4-280-11B

190

1500/150

3

263

3.3*52

0.91-3.91

3.5

50

ZSY500-28

27.707

ZSN4-315-082

190

1000/100

3

280.8

3.6*55

3.5

3.5

76

ZS117-5-II

79.2

ZSN-280-11B

125

1000/200

4

368.7

4*60

0.396-3.96

3.5

105

ZSY630-35.5

34.601

ZSN4-355-092

315

1000/100

4

487.5

4.2*60

0.4165-4.165

3.5

143

ZSY710-35.5

35.526

ZSN4-355-12

420

1000/100

4

556.1

 Structural Featuers of Rotary Kiln

 1. Supporting device apply rolling bearing ( few with sliding bearing) to simple the bearing structure to slow down the kiln power consumption and it also improve the maintenance and inspection conditions.

2. Catch wheel: including two kinds mechanical wheel and hydraulic pressure

3. Gears: single or double. Control the rotating speed by buncher, DE machine and frequency variable motor. Be reliable, energy-saving, and efficient.

4. Cylinder type bolster: lower bolster has three types: fixed, zoom and floating. The structure is simple, replacement is convenient and won’t hurt cylinder.

5. Sealing equipment: there are many kinds for choice according to kiln models, including air cylinder edge sealing, spring edge sealing, and graphite block sealing and combination for above. The feather is adaptive for cylinder rotating and swing. And sealing effect is very good.

6. Kiln head hood: including stationary type and flexible type.

7. Transmission device apply speed adjustable motor with big speed adjustable range, stable operation, easy to maintenance advantages. Our Rotary Kiln has slow disk kiln structure, which is composed by Diesel engine, gearbox, etc. It could continue to operate when electric stops, its operation is very flexible and convenient and easy for the kiln maintenance and inspection.

 Drawing of rotry kiln

Principle of Operation

The kiln is a cylindrical vessel, inclined slightly to the horizontal, which is rotated slowly about its axis. The material to be processed is fed into the upper end of the cylinder. As the kiln rotates, material gradually moves down towards the lower end, and may undergo a certain amount of stirring and mixing. Hot gases pass along the kiln, sometimes in the same direction as the process material (co-current), but usually in the opposite direction (counter-current). The hot gases may be generated in an external furnace, or may be generated by a flame inside the kiln. Such a flame is projected from a burner-pipe (or "firing pipe") which acts like a large bunsen burner. The fuel for this may be gas, oil or pulverized coal.

Flame of rotary kiln

Brick of rotary kiln

A Rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process. Materials produced using rotary kilns include:

   Cement

   Lime

   Refractories

   metakaolin

   Titanium dioxide

   Alumina

   Vermiculite

   Iron ore pellets

Using site of rotary kiln

Factory information