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Limonite Rotary Kiln

Limonite Rotary Kiln

Specifications:

Limonite calcination rotary kiln is applied to calcination of limonite and hematite. It belongs to building material equipment kind. According to types of materials, rotary kiln can be divided into three types, cement rotary kiln, metallurgy chemical rotary kiln and limestone kiln.

Application Range:widely applied to chemical, building, mining and metallurgy industry;

Applicable Materials:Sponge iron and reduced iron, iron ore, chromite, nickel ore, reduced iron, magnesium.

Advantages

The production process of iron oxide red takes advantage of natural rich brown iron. 
After crushing, classification, beneficiation, filtering, drying and calcining process, iron oxide red can be got. 
This production process is short and only needs natural limonite as raw material. 
There is no chemical reaction process in the whole production process. 
Compared with present production process, it costs less and can save a great amount of expense for customers. 
Therefore, using rotary kiln to produce iron oxide red is characterized by large production scale and high efficiency. 
Proper control is a key point. In the calcining process of rotary kiln, temperature control process is a very important step. 
Temperature control is closely relevant to the stability, quality, energy consumption and production safety of products.

Working Principle

rotary kiln working principle

1.     After storage, raw ore will be directly fed to tail of rotary kiln after passing by belt weigher, belt conveyor, silo and air-lock valve. In order to save investment, there is only a stability bunker at the end of kiln.
2.     After entering limonite rotary kiln, ore will be heated first. Raw ore and hot air will move forward reversely. At heating part, raw ore will be heated to reduction temperature and enter reduction zone.
3.     The temperature of flame center in reduction zone should be controlled at 1000 degree. The hot air’s temperature at reduction zone should be controlled at 700 degrees and reverted to magnetite after reacting with reducing gas.
4.    Then, ore will enter cooling area and meet with coal gas. Coal gas will be preheated. Ore will be discharged out after being cooled. After being water-cooled by continuous bucket conveyor, ore will be sent to storage.

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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