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Rotary kiln

Rotary Kiln belongs to building material equipment, according to different materials, which can be divided into cement kiln, metallurgy chemical kiln and lime kiln. Cement kiln is used for making cement clinker and there are dry and wet methods to make cement clinker. Metallurgy chemical kiln is widely used for magnetic roasting of poor iron ore and oxidizing roasting of chrome and nickel in the steel factory; backing high-alumina mine in the refractory material factory; baking chamotte and alumina in the aluminum factory and baking chrome ore and chrome powder in the chemical plant. The Lime Kiln is used for roasting active lime in steel works and ferroalloy plants and light roasting dolomite.


The rotary kiln from china professional manufacture Hongji Group Machinery is a cylindrical vessel, inclined slightly to the horizontal, which is rotated slowly around its axis. The material to be processed is fed into the upper end of the cylinder. As the kiln rotates, the materials gradually move down towards the lower end, and may undergo a certain amount of stirring and mixing. Hot gases pass along the kiln sometimes in the same direction as the process material (co-current), but usually in the opposite direction (counter-current). The hot gases may be generated in an external furnace, or may be generated by a flame inside the kiln. Such a flame is projected from a burner-pipe (or 'firing pipe') which acts like a large burner. The fuel may be gas, oil or pulverized coal.

Introduction and application of Rotary Kiln 

The rotary kiln refers to the rotation calcining kiln (known as rotary kiln), belonging to the building material equipment, which can be divided into cement kiln, metallurgy chemical kiln and lime kiln according to different materials.

Cement kiln is mainly used for calcining cement clinker, including dry and wet process cement kiln. 

Metallurgy chemical kiln is mainly used for lean iron ore magnetized roasting in steel plants of metallurgical industry; chromium and nickel iron ore oxidizing roasting; bauxite roasting in refractory plants and chamotte and aluminum hydroxide roasting in aluminium factory; chrome ore roasting in chemical plant.

Lime kiln (i.e. active lime kiln) is used for roasting active lime and light burned dolomite for steel plants and ferroalloy works. 

Working principle of Rotary Kiln:

The rotary kiln is made up of gas flow, fuel burning, heat transfer, and material movement etc process. The rotary kiln is to make the fuel fully burning, the heat from which can be effectively pass to materials, so that material can produce series of physical and chemical changes after receiving the heat, finally forming finished product chamotte.

Technology and features of Rotary Kiln:

Rotary kiln adopts:
1. the most advanced hydraulic catch wheel
2. high precision of measurement piston pump
3. flow speed control valve
4. contact graphite block sealing device
In order to improve automation performance, kiln head adopts:
1. industrial monitor watching fire
2. analog fluorescent screen for process flow
3. calcination zone adopts the infrared scanner, directly reflecting the calcination situation in computer .
All these new technology has a strong intuitive sense in use, easy to operate. Reliable and stable thermal condition improves the operation rate of the equipment.
Compared with the same specification of equipment, the operation rate increases by 10%, the yield increases by 5%-10%, and the heat consumption decreases by 15%.


Product type

2018 Machine Price of Activated Carbon calciner Small Vertical Shaft Cement Lime Rotary Kiln Dryer 

maximum feeding size (mm)




eccentric shaft rotate speed (r/min)

0.25-2.18 RPM


as your requirement

spare parts

supply at favorable price


under our engineer's guide


factory price, negotiable

factory visit

invitation letter, round trip car picking up


we supply the whole cement production line

Product Keywords

rotary kiln, lime rotary kiln, lime rotary kiln dryer


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