Cement creation and cementitious material, in which calcium carbonate reacts with silica-bearing materials to generate a mixture of calcium silicates, is generally carried out in a rotary kiln or cement kiln. Cement kilns are essential for the cement manufacturing process. Cement is an essential element that helps to construct buildings, organizations, and hospitals. Every year, tonnes of cement are used in the manufacturing process.
A standard industrial process involves three steps:
A preheater rotary kiln for cement was made to modify the kiln system to reduce fuel waste. This resulted in two important developments:
A rotary kiln is a long, cylindrical-shaped pipe that is approximately 85 to 90 m long, and its diameter is 5 to 6 m. It is slightly tilted from the horizontal and rotates about its axis at a speed of 3 - 4 r.p.m. It is covered with refractory bricks. In the preheater, the kiln feed is preheated and pre-calcined outside the rotary kiln, i.e., before it enters the rotary kiln.
In the preheater system, kiln gases are preheated and partially calcined in the kiln feed in a tower heat exchange cyclone. Precalciners with auxiliary firing are attached to the lowest level of the preheater tower. Outside the kiln, 95–97% of the calcination occurs in precalciner kilns.
Clinker manufacturing procedures in rotary kilns are divided into the following categories:
● Wet rotary kiln
A wet process kiln needs more, potentially, to produce the required amount of clinker.
● Semi-dry rotary kiln
In terms of fuel consumption, these kilns are essential for pre-heating and pre-calcining kilns.
● Dry rotary kiln
The kiln feed enters the kiln in dry powder form during this process. It works at extremely high temperatures and requires water sprays at the feed end to cool the exit gases before reaching the precipitator.
● Preheater rotary kiln
A pre-calciner is a horizontal heating element used to preheat and partially calcinate material before burning it in a rotary kiln.
In this article, we explore all the related content regarding the preheater rotary kiln for cement. Chanderpur Group offers a wide range of preheater rotary kilns for cement fully based on the latest technology. If you want to buy rotary kilns for industrial use, our comprehensive guide and detailed information will help a lot in choosing the best item for you.