| Application: | Construction |
|---|---|
| Certification: | CE, ISO |
| Customized: | Customized |
| Automatic Grade: | Semiautomatic |
| Experience: | More Than 50 Years |
| Design: | by Professional Engineer |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier PLC active lime production line
The quick/active lime system of this project, the daily output of high active lime around 50-1500T.
The pre-heating system, rotary kiln, cooler,smoke process system, raw material transport system, finished product delivery system, coal gas generate system constitute one complete production line of this project.
The whole line adopt the advanced technology and reliable performance DCS central control system, and operated and managed in central control room.
Process of the active lime production
Step One : Raw Material Preparation
1. Limestone: The particle size of limestone should be between 10~40mm. The proportion of limestone size above 40mm or below 10mm should not be more than 5%. The maximum size should be less than 40mm.
2. Fuel:Furnace gas, gas, coalbed methane, pulverized coal could be used as fuel.
Furnace gas as following conditions
|
Name |
Calorie value kJ/m3 |
CO2+H2S % |
CO % |
H2 % |
N2 % |
|
Furnace gas |
5900 |
3~7 |
25~30 |
11~15 |
47~54 |
Gas as following conditions
|
Name |
Calorie value kJ/m3 |
CO2+H2S % |
CH4 % |
CO % |
N2 % |
|
Gas |
33490 |
0.1~6 |
98 |
0.1~4 |
1~5 |
Chemical indicators of coal
|
Volatile% |
Ash% |
Coke |
Adhesion index |
Sulfur content % |
Calorie value (kCal/kg) |
Ash melting point ºC |
|
|
Coal |
Raw Coal |
||||||
|
>14 |
15 |
20 |
<6 |
20 |
1.8 |
>6000 |
>1200 |
Step Two: Raw Material Feeding
Limestone in the plant yard will be carried by tractor shovel and fed to hopper, it will be discharged from hopper to vibrating feeder and sent to vibrating screen for screening through belt conveyor. The size ≥20mm will be sent to pre-heater by conveyor. And size less < 20mm will be carried away.
Step Three: Limestone Calcination
Limestone in the pre-heater will be preheated by the hot air, then it will be discharged to rotary kiln through chute that connecting pre-heater and kiln, it will stay in the kiln for 1.5-2 hours for calcination, during the process, it will be calcinated with temperature around 1300 ºC, after which comes limestone decomposition and release of co2,then the for mation of quick lime qill be completed.
Step Four: Finished Products Conveying
Lime will be discharged to a chain conveyor by vibrating feeders in the bottom of vertical cooler, it will be lifted to lime in the storage hopper can be used for dispatch or transported to the hydration workshop.
Step Five: Dust Filtering System
There are two dust filtering systems, one is in the kiln inlet, dust will be filtered by bag filter then the clean gas will be released to air. The other is dust from lime storage hopper and the feeding part of bucket elevator, dust will be filtered by bags and then released to air.
The Technical Parameter of Lime Rotary Kiln
| Specifications (mm) |
The size of the kiln | Capacity (t/h) |
Speed (r/min) |
Power (kw) | Weight (t) |
||
| Diameter (mm) | Length (mm) | Gradient (%) | |||||
| φ1.4×33 | 1.4 | 33 | 3 | 0.9-1.3 | 0.39-3.96 | 18.5 | 47.5 |
| φ1.6×36 | 1.6 | 36 | 4 | 1.2-1.9 | 0.26-2.63 | 22 | 52 |
| φ1.8×45 | 1.8 | 45 | 4 | 1.9-2.4 | 0.16-1.62 | 30 | 78.2 |
| φ1.9×39 | 1.9 | 39 | 4 | 1.65-3 | 0.29-2.93 | 30 | 77.59 |
| φ2.0×40 | 2 | 40 | 3 | 2.5-4 | 0.23-2.26 | 37 | 119.1 |
| φ2.2×45 | 2.2 | 45 | 3.5 | 3.4-5.4 | 0.21-2.44 | 45 | 128.3 |
| φ2.5×40 | 2.5 | 40 | 3.5 | 9.0-10.5 | 0.44-2.44 | 55 | 149.61 |
| φ2.5×50 | 2.5 | 50 | 3 | 6.25-7.4 | 0.62-1.86 | 55 | 187.37 |
| φ2.5×54 | 2.5 | 54 | 3.5 | 6.9-8.5 | 0.48-1.45 | 55 | 196.29 |
| φ2.7×42 | 2.7 | 42 | 3.5 | 10.0-11.0 | 0.10-1.52 | 55 | 198.5 |
| φ2.8×44 | 2.8 | 44 | 3.5 | 12.5-13.5 | 0.437-2.18 | 55 | 201.58 |
| φ3.0×45 | 3 | 45 | 3.5 | 12.8-14.5 | 0.5-2.47 | 75 | 210.94 |
| φ3.0×48 | 3 | 48 | 3.5 | 25.6-29.3 | 0.6-3.48 | 100 | 237 |
| φ3.0×60 | 3 | 60 | 3.5 | 12.3-14.1 | 0.3-2 | 100 | 310 |
| φ3.2×50 | 3.2 | 50 | 4 | 40.5-42 | 0.6-3 | 125 | 278 |
For more information about our rotary lime kiln production line plant equipment, please contact: [email protected]
Suppliers with verified business licenses
Audited Supplier 
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