Industry Reports

Calcium Carbonate Rotary Kiln Manufacture

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  • Apr 09, 2015  UTC+8
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  • Tags: Rotary Kiln Limestone Kiln Calcium Carbonate Kiln

The limestone is be warmed to 900℃ in 1500℃ preheater by the exhaust gas. They are pushed to the rotary kiln by hydraulic push rods. CaO and CO2 are generated in the calcining zone. The decomposed limestone fed to the cooling machine, in which they are cool down to 100℃. Then they are discharged to the vibration feeders, taken to the limestone silos via conveyor, bucket elevator and belt conveyor.

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Features of the Calcium Carbonate Production Line:

1.Effective preheating function that 20-25% limestone is decomposed in the preheater.

2.Scaling seal makes sure the air leakage factor is less than 10%.

3.The round vertical cooling machine can make the limestone discharged at 800℃+environment temperature.

Rotary Kiln Specification

Main Equipment

NO.

Equipment name

Specification

Type

Qty

1

rotary kiln

Ф4.0×60m


1

2

vertical   preheater

Ф10.5×8.5m


1

3

vertical   cooler

105m3

4.2*9m

1

4

multi   pipe cooling machine

dealing   air260000m3/h


1

5

High temperature exhaust fan

900kw10KV


1

6

coal   mill system

8-10t/h

PDM1250

1

7

gas&coal   burning system


four way burner

1

8

dust collector equipment

8.1

kiln   tail flue dust collector

dealing air 260000m3/h

LCMD-3660

1

8.2

coal   grinding dust collector

dealing air45000m3/h

FGM128-6(M)

1

8.3

cooling   dust collector

dealing air18600m3/h

PPc64-4

1

8.4

finished   product screening dust collector

dealing air18600m3/h

PPc64-4

1

9

accessory equipment

9.1

bucket   elevator


NE100

1

9.2

Circular   vibrating screen


YA1536

1

9.2

Circular   vibrating screen


YA1236

1

9.4

chain   scraper conveyor


DS500

1

9.5

belt   conveyor



6

10

fan

10.1

axial   flow fan



4

10.2

centrifugal   fan



2

10.3

coal   mill fan



1

10.4

roots   fan



3

 

Performance


300t/d

600t/d

800t/d

1000t/d

1200t/d

1500t/d

Preater

Type

Lossless   Partitioned Vertical

Lossless   Partitioned Vertical

Lossless   Partitioned Vertical

Lossless   Partitioned Vertical

Lossless   Partitioned Vertical

Lossless   Partitioned Vertical

Shape

Hexagon

Dodecagon

Dodecagon

Octadecagon

Icosagon

22

Preheat Silo

6

12

12

18

20

22

Hydralic Push Rod

6

12

12

18

20

22

Preheat (t)

1200

1200

1600

2000

2400

3000

Rotary Kiln

Specification

Φ3.2×50m

Φ4×60m

Φ4.8×56m

Φ5.0×58m

Φ5.2×64m

Φ5.6×76m

Inclination

0.035

0.035

0.035

0.035

0.035

0.035

Speed (r/min)

0.3-1.8

0.3-1.8

0.3-1.8

0.3-1.8

0.3-1.8

0.3-1.8

Burning T (℃)

1350

1350

1350

1350

1350

1350

Cooling Machine

Type

Partitioned   Vertical

Partitioned   Vertical

Partitioned   Vertical

Partitioned   Vertical

Partitioned   Vertical

Partitioned   Vertical

Tempertuare Control Zone Number

3

3

4

4

4

4

Wind Tower

2+1

4+1

4+1

4+1

4+1

4+1

Specification(m)

3.6×3.6

4.1×4.1

4.7×4.7

5.2×5.2

5.4×5.4

5.8×5.8

Discharged T(℃)

≤80

≤80

≤80

≤80

≤80

≤80

Heat Consumption


5400

5400

5000

4750

4600

4500

Fuel

Coke oven gas,Mixed gas,Natural gas,Pulverized coal, Low heat vaule gas