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Structure of Rotary Kiln

Published:2016-02-19

Simply speaking, the structure of rotary kiln is composed of kiln head, kiln body, conveyor belt and other parts. The transportation and calcination in the whole kiln body are mainly completed by these parts. To better complete its work, we need to understand the main functions of its components. Next, please see the details below.

1、 Kiln head

The kiln head is the discharge part of rotary kiln, and its diameter is larger than that of rotary kiln. The sealing is realized by stainless steel fish scale and kiln body. The main components include inspection port, coal injection nozzle, trolley, observation hole, etc.

2、 Kiln body

It is the main body of rotary kiln (rotary kiln), usually 30-150 meters long, cylindrical, with 3-5 rolling rings in the middle. The cylinder body is mostly processed into 3-10 segments by the factory, and welded after being transported to the destination by large trucks. The rolling ring part, also known as (mould ring), is made of molten steel. The kiln body of the rolling ring part is slightly thicker than the steel plate of other parts due to its load-bearing. The supporting tugboat is also a part of the kiln body and the rolling ring is connected with the foundation, which is the bearing pillar of the whole rotary kiln. A group of idlers is usually composed of two idlers and two stop wheels. When the rotary kiln is in normal operation, refractory bricks should be laid inside.

3、 Kiln tail

The kiln tail part is also an important part of rotary kiln. The shape of the feed end is similar to the cover of a rotary kiln, mainly responsible for feeding and sealing.

4、 Supporting frame of rotary kiln

1. The support frame of rotary kiln can make our rotary kiln equipment more solid, so that it will not shake when working and stabilize production.

2. It is mainly used to fix our equipment and prevent the deformation of our rotary kiln equipment when it is used. We all know that the rotary kiln equipment will get out of shape if it is not operated properly, so it has such a function.

3. It is convenient for the hoisting and transportation of rotary kiln equipment.

5、 Preheating tower

It is also called preheater. It is a kind of equipment which uses the waste heat of tail gas discharged from rotary kiln to heat the material before entering the rotary kiln. It is mostly vertical structure. The principle is that the waste heat discharged from the kiln tail will pass through the preheating tower filled with raw materials to realize the raw material heating process. In addition, preheating tower can effectively reduce energy consumption and improve the quality level of finished products.

6、 Cooler

The cooler and preheater, on the contrary, are the devices for rapid cooling after the materials are fired in the rotary kiln. It looks like a small rotary kiln, but its diameter is smaller and shorter. It does not need to lay refractory bricks, but is replaced by a lifting plate inside. The main function is to cool the finished product rapidly.

7、 Conveyor belt

Conveyor belt is the material conveying device of rotary kiln. In the process of use, there are many forms of damage, such as edge delamination, ulceration, defect and cracking; long-distance longitudinal tearing, deep scratch, holes, large area wear, covering rubber bulge or peeling, defects in joints, etc. Among them, longitudinal tearing is the most urgent, edge damage is the most common, the internal defects of joints are difficult to avoid, and the service life after repair is the most concerned.

It can be seen from the above that the structure of the rotary kiln is mainly composed of the above components. At the same time, its performance mainly depends on the operation of the components. Therefore, we must select the products with high quality when selecting products.


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