Chaeng (Great Wall Machinery) can undertake the EPC 200-1500 t d active lime production line, including the reach report, civil engineering, designing equipment, installation and debugging--- "turnkey " service with production capacity and standard achieved by improving the producing technology,tha capacity degrees of the lime we engineered are 30ml higher than the others Usually at 340-380ml,even 400ml
Lime Production Line Processing:
Qualified limestone (20 ~ 50 mm) are lifted by bucket elevator to top silo of preheater. There are two level indicators (up and down) controlling the feeding amount, then they are separated averagely into preheaters’ individual rooms. The limestone’s temperature rises to about 900℃ heated by kiln flue gas of 1150℃, about 30% of them are decomposed, and they come into the lime rotary kiln by hydraulic rod, where the limestone decomposed into CaO and CO2. The decomposed limestone are put into the cooler, where its temperatures drops to 100℃ and released. The hot air (600°C) will come to kiln after heat exchange, and mix with coal gas for mixture combustion. The exhaust gas is released by the blower into bag deduster through multi-pipe cooler, then into the chimney though exhaust blower.
Main structure of Active Lime Production Line:
Main structure of vertical cooler
Grate bar and discharge device for big block
Cooling chamber lower the cooler
Support Device
Main structure of rotary kiln:
1. Body
2. Riding wheel
3. Gear ring
4. Tire
5. Transmission device
Main structure of vertical preheater:
Upper feeding system: upper material bin, feeding chute
Preheater body: preheater chamber, suspension device
Stacker device: stacker part, frame, connecting rod.
Hydraulic system
Advantages of rotary kiln to calcine active lime:
1. High activity, and good quality: the activity of the finished product can reach 360ml, underfiring and overburning rate <8%,and the quality is uniform.
2. Advanced technology, energy conservation and environment protection: advanced calcination technology, low energy consumption; temperature of discharged fuel gas < 220℃, which is good for dust collection, and can fully meet the requirements of energy conservation and environment protection;
3. Large output. The maximum capacity for a single line can be 1000t/d.
4. High degree of automation, and easy operation. Adopt DCS remote control system with high degree of automation.
Configuration
|
designed capacity （T/D）
|
200 |
300 |
400 |
600 |
800 |
1000 |
|
|
product |
active lime |
active lime |
active lime |
active lime |
active lime |
active lime |
|
|
preheater
preheater |
specifications |
RS-6.5×3.4 |
RS-7.5×3.4 |
RS-8.5×3.4 |
RS-10.×3.4 |
RS-10.8×3.4 |
RS-13.5×4 |
|
Number of push rod |
6 |
8 |
10 |
12 |
16 |
18 |
|
|
kiln |
specifications |
Φ2.8×42M |
Φ3.3×50M |
Φ3.6×56M |
Φ4×60M |
Φ4.3×66M |
Φ4.8×68M |
|
Effective volume（m3） |
190 |
292 |
430 |
575 |
738 |
1005 |
|
|
speed（r/min） |
0.45-2.22 |
0.2-1.9 |
0.22-1.57 |
0.48-1.57 |
0.21-1.57 |
0.19-1.98 |
|
|
Cooler
|
specifications |
LS-3×3 |
LS-3.6×3.6 |
LS-3.8×3.8 |
LS-4.1×4.1 |
LS-4.7×4.7 |
LS-5.2×5.2 |
|
Feed temperature |
1100±50℃ |
1100±50℃ |
1100±50℃ |
1100±50℃ |
1100±50℃ |
1100±50℃ |
|
|
Discharge temperature |
＜100℃ |
＜100℃ |
＜100℃ |
＜100℃ |
＜100℃ |
＜100℃ |
|
|
Weight(T) |
35 |
|
40 |
50 |
|
|
|
|
heat rate（KJ/ Kg）
|
5200 |
5200 |
5100 |
5000 |
5000 |
5000 |
|
|
Activity（50g,4NHCL,10MIN） |
≥360ML |
≥360ML |
≥360ML |
≥360ML |
≥360ML |
≥360ML |
|
