man with drill
A rotary kiln is a device that provides a huge amount of heat to change the chemical composition of an object. It is made of a strong reinforced steel outer shell that is coated with a heat resistant inner liner, support rollers and a drive gear to keep the contents in continuous rotary motion, and internal heat exchangers capable of producing temperatures well above the 2732 °C. Fahrenheit (1500 degrees Celsius). Rotary kilns will be tilted slightly so that the internal contents are screened towards the heat source and allow any evaporative gas to escape at the top during the process through sealed ducts. The contents are then sorted and ejected through an opening at the bottom end of the device which automatically sorts the processed materials and waste into separate bins Incinerator or Rotary Kiln Dryer.
Perhaps one of the most common uses of this technology is the creation of a cement rotary kiln, which grinds limestone, clay, and shale into small rock chunks and turns them into a usable cement mix that is ready to be packaged or used in any way. immediate. During this process, the materials are exposed to varying temperatures that will evaporate any water present and transform the limestone and clay back to their original oxide states. As the internal heat increases to 2,642 degrees F (1,450 degrees C), the rocks that have become belite and calcium oxide coalesce to form the alite composition. Due to the extreme heat associated with this process, the resulting alite pieces are no more than 0.39 inches (10 mm) in diameter and are easily handled once the cooling process is complete.
The rotary kiln design allows many similar types of solids to be broken down into more user-friendly materials and is commonly used on alumina, titanium dioxide, and lime. Metakaolin, iron ore pellets, and many other metallic and non-metallic components can also be broken down in a rotary kiln. Refractory material, or a solid whose composition is metal-free but still suitable for construction, is also created using this method and eventually installed inside rotary and other kilns as insulation to protect the outer layers from extreme internal temperatures.