Vertical lime kiln

Vertical lime kiln

  • Output
    100~300 t/h
     
  • Limestone grain size
    40-80mm
     
  • Applications
    Metallurgy, construction, agriculture, calcium carbide, environmental protection and chemical industries
     

Features

Production process:

Limestone and coal are respectively fed into the storage bins by forklift. The lower parts of the bins have automatic weighing hoppers. After weighing according to the amount set by the computer, the limestone and coal are mixed. The mixed material is lifted by the skip car through the inclined bridge to the top of the kiln, and then is evenly sprinkled into the kiln through the loading equipment and the feeding equipment.

The raw material descends under the action of its own gravity in the lime kiln. At the bottom of the kiln, a roots blower cools the lime at the bottom of the kiln. The wind from the bottom exchanges heat with the lime and enters the calcining zone as fuel after its temperature reaches 600 degrees.

vertical lime kiln

The Limestone from the kiln top passes the preheating zone, the calcining zone, and the cooling zone, and complete chemical reaction under the action of high temperature to decompose into calcium oxide (lime). After that, it is discharged from the kiln bottom by the disc ashing machine and the ash discharging device with the function of sealed discharge, to realize the non-stop wind unloading.

(1) computer control interface

chaeng lime kiln

(2) Process flow chart:

process of vertical kiln

(3) Indicator parameters of production line

Limestone grain size: 40-80mm (The raw material >80mm can not exceed 5%, <40mm can not exceed 5%)

Fuel: available solid fuels such as coke, bituminous coal, anthracite, briquette. Grain size: 20-40mm for the best

Finished products can be used in metallurgy, construction, agriculture, calcium carbide, environmental protection and chemical industries.

Indicator parameters of production line
No. Index Unit Value Remarks
1 Effective volume of the kiln m3 100-300  
2 Effective height of the kiln m 15-26  
3 Effective inner diameter of the kiln m 2.5-4.5  
4 Utilization factor of the kiln t/d*m3 0.7-1.1  
5 Calendar work rate % <97  
6 Daily output t/d 100-300  
7 Overburning rate of lime % 5-12%  
8 Limestone consumption t*limestone/t*lime 1.78  
9 Fuel consumption KJ*kg lime <4600  
10 Power consumption KWH/t*lime <15  
11 Exhaust gas temperature <180  
12 Finished lime temperature <80  
13 Exhaust gas concentration Mg/Nm3 <50  
14 Co2 concentration in exhaust gas % 30-42%  

Specifications

Technical parameters of production line

Capacity(t/d)

Effective volume(m³)

Effective height(m)

Effective section Diameter (m) 

Limestone grain size (mm)

Heat consumption (kJ/kg)

100

120

15

φ2.5

40-80

<4600

150

200

18

φ3.5

40-80

<4500

200

300

24

φ4.0

40-80

<4500

300

380

26

φ4.5

40-80

<4400

 

Technical parameters of metallurgical active lime kiln

Model

120m3

200m3

300m3

380m3

Capacity

60-80tpd

110-135tpd

150-180tpd

200-240tpd

 

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