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What Mechanical Equipment Is Used for Calcining Cement Clinker?

2018/2/4 22:09:27

Cement clinker is mainly composed of CaO, SiO2, Al2O3 and Fe2O3, usually, we can call the cement clinker consisting of these ingredients as Portland cement clinker, and Portland cement clinker is one of the most common cement clinkers in cement industries. The cement clinker is formulated in the appropriate proportion according to its main composition, and then forming into the raw material, partially calcined or fully melted, and finally the semi-finished product comes into being after the cooling. The equipment used in this important calcining stage is rotary kiln, rotary kiln refers to rotary calcining kiln (commonly known as rotary kiln). The rotary kiln is divided into cement rotary kiln, metallurgical chemical kiln and lime kiln according to different materials. Today we will talk about the rotary kiln of calcined cement clinker, also known as the cement rotary kiln.


The components of cement rotary kiln are scoop-shaped feeding hopper, smoke chamber, kiln body, coal injection pipe, cooling tube, coal powder bunker, bracket, gear, blower, motor, etc. From the device structure, we can easy to see that the cement rotary kiln belongs to the calcined mechanical equipment with high technical content. In the cement rotary kiln operation, it should be placed slantways, the slope is 30~35 degrees and its calcination temperature can be as high as 1600℃.

The process of cement rotary kiln calcining cement clinker

When the cement rotary kiln is running, the cement stone is stirred sufficiently in the rotary kiln with the help of kiln rotation, so that the cement clinker can be mixed together and interact with each other. Then the coal powder bunker constantly sends the coal powder to coal injection pipe in kiln head, and coal combustion produces a large amount of heat, next the heat is sent to cement clinker through the flame radiation, heat convection and kiln coating conduction. The cement clinker depending on the slope of kiln cylinder and the rotation of the kiln continuously moves forward in the kiln cylinder, so as to achieve the purpose of calcination. Finally the cement clinker after calcinated is discharged from the outlet of cement rotary kiln.

With the increasing demand for cement clinker in cement industry, the demand for cement rotary kiln is also going up. The cement rotary kiln as the important building materials equipment, users definitely need to choose a cement rotary kiln with excellent quality when purchasing the cement rotary kiln. Hongxing Machinery as a large building materials equipment manufacturer, has more than 30 years of manufacturing experience, continuously introduces advanced manufacture technology, under the constant effort of HXJQ R & D personnel and technical personnel, it puts out a batch of superior-quality cement rotary kilns favored by the users from different countries. If you have any problems or demand in building materials equipment, welcome your consultation.