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Rotary Kiln

Rotary kiln is also known as a calcining kiln. According to the difference of processing material, rotary kiln can be classified into cement rotary kiln, metallurgy chemical kiln, and lime rotary kiln.

Rotary kiln is also known as calcining kiln, belonging to the building material equipment. According to the difference of processing material, rotary kiln can be classified into cement rotary kiln, metallurgy chemical kiln, and lime rotary kiln.

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What is rotary kiln?

The rotary cylinder that can process the raw materials in mechanical, physical or chemical ways can be called rotary kiln. It is also known as calcining kiln, belonging to the building material equipment.

The parts of rotary kiln are cylinder, support device, support device with hydraulic stop wheel, transmission device, lubrication device, kiln seal device, etc.

Henan FTM Machinery Company supplies the rotary kiln with simple structure, less wearing parts, and high operating rate. Its technical performance and operation determine the quality, output and cost of the company’s products.

To a large extent, its technical performance and operation situation determines the quality, output, and cost of the company’s products,which means this the model of the kiln machines depending on many factors like above.


FTM manufacturers cement rotary kiln, metallurgy chemical kiln, and lime rotary kiln according to different raw materials for customers.

The cement rotary kiln is mainly used to calcine cement clinker. There are two methods of calcining cement clinker, dry-type cement kiln, and wet-type cement kiln respectively

Metallurgical chemical kiln is mainly used for magnetization roasting of lean iron ore in the steel industry; oxidizing roasting of chromium and ilmenite; roasting of high-metallurgical mine in refractory plant and roasting clinker and aluminum hydroxide in the aluminum plant. Chemical plants roast minerals such as chrome ore and chrome ore.

Lime rotary kiln incinerator is mainly applied to roast active lime used in the steel and ferroalloy plant, and burn the white lime lightly.

It also usually used in the production line of cement. This type of rotary kiln can combine with vertical preheater and cooler to form the energy-saving rotary kiln incineration systems

Three types of rotary kiln


1.Advanced technology. Vertical cylinder design accelerates the process of preheating directly. The decomposition rate of lime in the kiln can reach to 20%-25% and can use the ultra-fine lime.

2.The rotary kiln is sealed at both ends, which make sure the index of waste gases from a rotary kiln less than 10%. Besides, Fote machinery, rotary kiln manufacturer, adapts the composite refractory to produce the rotary kiln, which can reduce the radiation.

3.Round or square vertical cooler with filling can make the temperature of lime to 800 degrees.

Features of rotary kiln

Application in different fields

1.In the building materials industry, in addition to calcine cement clinker, the rotary kiln is also used for calcining clay, limestone and slag drying. In the production of refractory, the raw materials calcined by the rotary kiln have a standard size, high strength, and are recyclable.

2.Using the rotary kiln to roast lean iron ore magnetically will increase its magnetism so that the iron ore can be separated from the stone in the process of benefication.

3.In the chemical industry, using the rotary kiln to produce soda, calcined phosphate fertilizer, strontium sulfide, etc. In the 1960s, LapPle invented a new process for producing phosphoric acid from rotary kiln. This method has the advantages of low energy and power consumption.

4.The whole production of cement is summarized as “two mills and one burning”, of which “one burning” is the process of burning the raw material prepared by grinding into clinker under the high temperature of the rotary kiln. Thus, rotary kiln is regarded as the “heart” of cement production.

5.The developed countries have used the rotary kiln to burnt dangerous wastes for a long time. This not only reduces pollution, but recycle the waste as fuel.

Rotary kiln for sale

The pulverized coal is burned in a rotary kiln burners to generate heat. The material is heated by gas conduction or radiation. Meanwhile, as the kiln body rotates according to the rotary kiln design of inclination and rotation speed, the raw materials are also periodically rolled forward in the kiln so that the raw material is transported from the inlet to the outlet. The raw materials are calcined into qualified clinker in the time of rotary kiln to achieve high yield, high quality and low consumption.

Rotary Kiln Technical Parameter

Kiln dimensions Motor 
Φ2.5×40 180 0.44-2.44 55 149.61
Φ2.5×50 200 0.62-1.86 55 187.37
Φ2.7×42 320 0.10-1.52 55 198.5
Φ2.8×44 450 0.437-2.18 55 201.58
Φ3.0×45 500 0.5-2.47 75 210.94
Φ3.0×48 700 0.6-3.48 100 237
Φ3.2×50 1000 0.6-3 125 278
Φ3.3×52 1300 0.266-2.66 125 283
Φ3.6×70 1800 0.25-1.25 125 419
Φ4.0×56 2300 0.41-4.07 315 456
Φ4.0×60 2500 0.396-3.96 315 510
Φ4.3×60 3200 0.396-3.96 375 583
Φ4.5×66 4000 0.41-4.1 560 710.4
Φ4.7×74 4500 0.35-4 630 849
Φ5.0×74 6000 0.35-4 710 944
Φ5.6×87 8000 Max4.23 800 1265
Φ6.0×95 10000 Max5 950×2 1659
Kiln dimensions
Φ2.5×40 180 0.44-2.44
Φ2.5×50 200 0.62-1.86
Φ2.7×42 320 0.10-1.52
Φ2.8×44 450 0.437-2.18
Φ3.0×45 500 0.5-2.47
Φ3.0×48 700 0.6-3.48
Φ3.2×50 1000 0.6-3
Φ3.3×52 1300 0.266-2.66
Φ3.6×70 1800 0.25-1.25
Φ4.0×56 2300 0.41-4.07
Φ4.0×60 2500 0.396-3.96
Φ4.3×60 3200 0.396-3.96
Φ4.5×66 4000 0.41-4.1
Φ4.7×74 4500 0.35-4
Φ5.0×74 6000 0.35-4
Φ5.6×87 8000 Max4.23
Φ6.0×95 10000 Max5


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