How does a rotary calciner work?
As the material is fed into the calciner, a rotating cylinder gently pushes the material along the chamber. This rotation promotes even material distribution and processing. Rotation speed and temperature are tightly controlled according to the desired process or material application.
What is a calciner kiln?
Industrial Calciner Rotary Kiln Application The calciner rotary kiln, or indirect kiln, is a rotating drum inside an externally-heated furnace that can reach temperatures as high as 3000°F that must be tightly controlled to remain even across the surface of the drum.
What is a rotary kiln used for?
A rotary kiln is a physically large process unit used in cement production where limestone is decomposed into calcium oxide which forms the basis of cement clinker particles under high temperatures.
How are rotary kilns heated?
Rather than applying heat directly to the material – as direct rotary kilns do – the Indirect Rotary Kiln is heated from the outside, where the material is heated via contact with the outer kiln shell.
What is calciner concrete plant?
Precalciner, also known as cement calciner, is a kind of high-efficiency direct combustion solid-gas heat exchange cement equipment. It disperses and suspends cement raw meal powder in airflow, making fuel combustion and calcium carbonate decomposition happen in a short time (generally 1.5 ~ 3 seconds).
What is the length of rotary kiln?
Rotary kiln is basically a cylinder of length 50 – 120 m (modern kilns) and 3.5 to 6.5 feet in diameter. During kiln mainly on how long it takes until the temperature of the raw material clinker temperature of about 1370˚C is, it depends.
What is flash calcination?
Flash calcination is a process whereby a solid, usually. in finely divided form, is heated rapidly, held at tem- perature for a short time, and then cooled rapidly. Heating and cooling rates on the order of 103-10 s de- grees per second and times of exposure at temperature.
What happens in a calciner?
What is the advantage of using pre calciner?
8. What is the advantage of using precalciner? Explanation: Almost 95% of calcination is completely over in the precalciner, if 50-60% of fuel is added to this chamber. Hence fuel in the kiln required is less.
Why flash calciner is installed?
Our FCB Flash Calciner can be used with a wide range of clay materials. Its advanced technology prevents the raw materials from overheating. This is essential for producing highly amorphous pozzolan (an alternative cementing material) through calcination of kaolin or of clays containing kaolinite.