• Active Lime Production Line
  • Active Lime Production Line
  • Active Lime Production Line
  • Active Lime Production Line
  • Active Lime Production Line
  • Active Lime Production Line
  • Active Lime Production Line
  • Active Lime Production Line

Active Lime Production Line

Capacity:50-800(t/d)

Main Materials:Limestone

Main Equipment:vertical preheater,lime kiln,bag filter

Lime Activity:≥360mL

Active lime is produced from limestone, dolomite, chalk and other minerals with high calcium carbonate content by the calcination process under the temperature of 1000-1100 ° C. There are various processes for the active lime production, mainly including: Advanced 'Preheater-Rotary kiln-Vertical cooler' energy-saving process, Traditional 'long rotary lime kiln' process, Mixed buring vertical kiln process, Gas-fired or oil-fired vertical kiln process. The selection of the active lime process is effected by many factors, such as : the activity requirement, the fuel, the limestone sizes, production capacity, environmental-protection requirement. 

Our Advantage

1

  Saving energy

  Vertical preheater is equipped at the kiln inlet. It will use the hot air from rotary kiln to preheat the raw material which also can partially decomposed inside the preheater. This will increase the 40% of output capacity and 30% of thermal efficiency. Vertical cooler is equipped at the kiln outlet. It will use the high temperature from the calcined material to heating the secondary air to 600℃. Kiln outlet adopts integration design for vertical cooler and kiln outlet hood, and it needs less construction land and good sealing.

2

  Environmental protection

 Good dust collecting treatment at kiln inlet. The cyclone dust collector and pulse bag filter can control the dust emission is lower than China standard. High level of automation requires less workers, the adjusting of production system operation, control and alarm are controlled at control room by PLC.

Production Technology

We will select the most workable and efficient and economical solution based o the clients' specific requirement and conditions.
 
Energy Saving Rotary Lime Kiln Process
Rotary kiln is one kind of furnace which is widely used for calcined active lime production in the world. It is also widely used in many industries such as construction materials, metallurgy, chemical and environmental protection. The energy-saving rotary lime kiln has the advanced structure and stable operation. It adopts the vertical preheater with low pressure loss  which can  effectively improve  the  preheating effects. The raw materials’  decomposition rate in the  vertical preheater can reach to 30% before entering into the rotary kiln. It is also suitable for different fuels including pulverized solid fuel, liquid fuel and gas fuel. The final lime products have high activity. This kind of rotary kiln already have been widely used in the steel industry and chemical industry.
 
Traditional Rotary Lime Kiln Process
The long rotary lime kiln has the characteristics of simple structure and stable operation. It increases the length of the rotary kiln cylinder to improve the preheating effect, and after preheating, the limestone is entering into the calcination zone for decomposition; The limestone feeding size can be 10 ~20 mm, 20~40 mm. It can use various fuels including pulverized solid fuel, liquid fuel and gas fuel. The final lime or dolime product has relatively higher activity. This kind of rotary kiln is suitable for middle & small production lines, and is suitable for the lime production with limestone with small sizes or lower heat strength.
 
Mixed Burning Vertical Lime Kiln Process
The qualified raw materials and solid fuels are mixed uniformly according to a certain proportion and then sent to the vertical kiln through a single bucket elevator for calcination. After calcination, the final lime products are discharged from the bottom of the vertical kiln through a discharge device to the conveyor, and the conveyor sends the final lime products to the storage silo. The hot flue gas generated by calcination will firstly go into the dust collecting system, and then the clean flue gas will be emitted through chimney to the atmosphere.
 
 
PROCESS FLOW CHART 

Configuration

Capacity

200t/d

225t/d

250t/d

300t/d

400t/d

500t/d

600t/d

800t/d

Preheater

Shape

Hexagon

Hexagon

Octagon

Octagon

Octagon

Decagon

Dodecagon

Dodecagon

Qty. Of

 Top Silo

6

6

8

8

8

10

12

12

Qty. Of Hydraulic Pusher

6

6

8

8

8

10

12

12

Preheating Capacity (t)

600

600

800

800

800

1000

1600

1600

Rotary Kiln

Size

Φ2.8×42m

Φ3.0×50m

Φ3.2×50m

Φ3.3×55m

Φ3.6×55m

Φ3.8×58m

Φ4×60m

Φ4.3×56m

Slope

3.50%

3.50%

3.50%

3.50%

3.50%

3.50%

3.50%

3.50%

Rotating 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

0.3-1.8

0.3-1.8

Calcination Temperature

(℃)

1350

1350

1350

1350

1350

1350

1350

1350

Cooler

Type

Vertical

Vertical

Vertical

Vertical

Vertical

Vertical

Vertical

Vertical

Qty Of Temperature Control Area

3

3

3

3

3

3

3

3

Qty. Of

Wind Tower

4+1

4+1

4+1

4+1

4+1

4+1

4+1

4+1

Size(m)

3.6×3.6

3.6×3.6

3.6×3.6

3.6×3.6

4.1×4.1

4.1×4.1

4.1×4.1

4.7×4.7

Output Temperature

(℃)

≤120

≤120

≤120

≤120

≤120

≤120

≤120

≤120

Product Thermal Loss(kcal/kg)

5500

5400

5400

5400

5400

5400

5400

5000

Available Fuel

Coke oven gas, mixed gas, natural gas, coal powder, low heating value coal gas

Message

InquiryYou can get the price list and we will contact you within one business day!

Name:*
Tel:
E-mail:*
Country:
Message:*

Get Quote

Please fill in your info and we will contact you soon.

  • *Your name:
  • Telephone:
  • *Email:
  • *Message:
WhatsApp
+86 18037866379
WeChat
+86 18037866379