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Lime Rotary Kiln

Lime Rotary Kiln

Specifications:

Lime Rotary Kiln is composed of cylinder, gears,support decvice, kiln liner and kiln tail sealing equiment, kiln head hood and combustion.Lime kiln as a heating device is a high-quality steel processed.

Application Range:construction, building, metallurgy, mining, industrial garbage waste disposal,chemical and other relevant industries.

Applicable Materials:mainly applied for limestone, quick lime, cement clinker, mineral ore, bauxite,aluminium hydroxide, iron ore and etc.

Advantages

Save much running cost  

New lime rotary kiln adopts international advanced combustion technology which can fully make use of cheap fuels, especially can reuse previously forbidden fuels. It can save great deal running cost for enterprises. 

Cost less expense on raw material 

It adopts space-filling and ventilated cylindrical and vertical cooler which can make sure proper discharged temperature. It brings about much convenience to transportation and storage. This system can preheat secondary air to higher than 7000 degrees, which save customers moving parts and special materials. 

Good quality of final products 

Final discharged lime produced by new type lime rotary kiln is characterized by strong chemical reaction, small bulk density and large specific surface area. It has become very important auxiliary material in sintering steel industry, coking and calcium carbide industry. 

 Environment-friendly 

New technology greatly improves fuel utilization rate and greatly reduces great deal pollution. It has reached to national standard and makes wastes into useful energy. It is not only a kind of protection to environment, but also conform to national development aim. 

High decomposition rate 

New type rotary kiln holds advanced structure. Special vertical preheater can effectively improve preheating effect. Decomposition rate of preheated limestone can reach to 20% to 25%. What’s more, it can directly utilize 10 to 15 mm fine limestone. 

Less energy consumption 

This is reliable rotary kiln is equipped with combined with seal flake, which reduce air leakage factor and thermal loss. It is characterized by simple maintenance and low energy consumption.

Working Principle

1.     Qualified lime kiln should be put into storage. After being elevated by elevator, materials will sent to top bunker in preheater. There are two level gages to control material amount added. Then, limestone will be sent to each chamber in preheater by tremie pipe.
2.     Limestone will be heated to 900 degree by 1150-degree kiln flue gas. About 30% limestone will be decomposed. After being driven hydraulic roller, limestone will be decomposed into CaO and CO2. After decomposition, limestone will enter cooler where limestone will be cooled to less than 100 degree and be discharged. After heating exchanging, 600-degree hot air will enter kiln and mix with coal gas. After mixing with cold gas, waste gas will enter bag filter and enter chimney through fan.
3.     Finally, after getting out of cooler, limestone will be sent to finished products storage through feeder, chain conveyor, bucket elevator and belt conveyor.

Technology process of lime kiln 
Limestone and fuel will be put into lime kiln furnace. After being heated to 850 degree, limestone will be decomposed. After reaching 1200 degree, calcining process will be finished. After being cooled, limestone will be discharged out. The production of limestone will be finished. Different kiln has different preheating, calcining, cooling and ash-discharging type. However, some technological processes are similar. The raw materials hold high quality. The fuel holds high thermal value. Less energy is consumed. The pellets of limestone will change along with calcining time. Activeness and calcining time will change opposite from calcining temperature.

Latest Delivery

Project Case

Technical Parameters

 
Specifications (m)
Dimension Power (kw) Total weight (t) Notes
Diameter (m) Length (m) Inclination (%) Output (t/h) Rotary speed (r/min)
Φ2.5×40 2.5 40 3.5 180 0.44-2.44 55 149.61 With vertical preheater
Φ2.5×50 2.5 50 3 200 0.62-1.86 55 187.37 ----
Φ2.5×54 2.5 54 3.5 204 0.48-1.45 55 196.29 ----
Φ2.7×42 2.7 42 3.5 320 0.10-1.52 55 198.5 ----
Φ2.8×44 2.8 44 3.5 400 0.437-2.18 55 201.58 Decomposition outside the kiln
Φ3.0×45 3 45 3.5 500 0.5-2.47 75 210.94 ---- 
Φ3.0×48 3 48 3.5 700 0.6-3.48 100 237 Decomposition outside the kiln
Φ3.0×60 3 60 3.5 300 0.3-2 100 310 Bauxite calcining kiln
Φ3.2×50 3.2 50 4 1000 0.6-3 125 278 Decomposition outside the kiln
Φ3.3×52 3.3 52 3.5 1300 0.266-2.66 125 283 preheat decomposition
Φ3.5×54 3.5 54 3.5 1500 0.55-3.4 220 363 preheat decomposition
Φ3.6×70 3.6 70 3.5 1800 0.25-1.25 125 419 Residual heat power
Φ4.0×56 4 56 4 2300 0.41-4.07 315 456 preheat decomposition
Φ4.0×60 4 60 3.5 2500 0.396-3.96 315 510 preheat decomposition
Φ4.2×60 4.2 60 4 2750 0.4-3.98 375 633 preheat decomposition
Φ4.3×60 4.3 60 3.5 3200 0.396-3.96 375 583 preheat decomposition
Φ4.5×66 4.5 66 3.5 4000 0.41-4.1 560 710.4 preheat decomposition
Φ4.7×74 4.7 74 4 4500 0.35-4 630 849 preheat decomposition
Φ4.8×74 4.8 74 4 5000 0.396-3.96 630 899 preheat decomposition
Φ5.0×74 5 74 4 6000 0.35-4 710 944 preheat decomposition
Φ5.6×87 5.6 87 4 8000 Max4.23 800 1265 preheat decomposition
Φ6.0×95 6 95 4 10000 Max5 950×2 1659 preheat decomposition

Core Equipment

Applicable Materials

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