In addition, in the environmental protection, the use of cement rotary kiln incineration of hazardous waste, garbage, which not only reduce the waste, harmless, and waste as fuel use, saving coal, so that the waste of resources.
The preheating and partial decomposition of the raw material is completed by the preheater, instead of the rotary kiln part of the function, to shorten the length of the rotary kiln, while the rotary kiln to the accumulation of gas heat transfer process, moved to the preheater suspended The raw material can be mixed with the hot gas discharged from the rotary kiln to increase the contact area of the gas, the heat transfer speed is high, the heat exchange efficiency is high, and the production efficiency of the cement rotary kiln system is improved and the clinker Into the purpose of heat. 80% of the heat transfer is carried out in the inlet pipe. Feeding the raw material in the preheater pipe, under the impact of the high-speed riser, the material is turned upwards with the airflow and is dispersed. When the airflow carries the powder into the whirlwind cylinder, it is forced to rotate in the annular space between the cyclone cylinder and the inner cylinder (exhaust pipe), and is moved downward while moving, , Can always extend to the end of the cone, and then turn up and up, by the exhaust pipe.
The emergence of pre-decomposition technology is a technological leap in the cement calcination process. It is in the preheater and rotary kiln between the addition of decomposition furnace and the use of kiln rise flue, set the fuel injection device, so that the combustion process of combustion and raw material decomposition of the carbonate decomposition of the endothermic process, The furnace in the suspended state or fluidized state quickly, so that into the rotary kiln raw material decomposition rate increased to 90% or more. The majority of the fuel from the decomposition furnace to join, a small part of the kiln by adding to reduce the kiln calcined belt heat load, extending the lining of the furnace, the furnace is carried out in the rotary kiln, Material life, is conducive to the production of large-scale; because the fuel and raw materials mixed evenly, fuel combustion heat in time to the material, so that combustion, heat transfer and carbonate decomposition process is optimized. Which has a high quality, high efficiency, low consumption and a series of excellent performance and characteristics.
Raw material in the cyclone preheater to complete the preheating and pre-decomposition, the next process is to enter the rotary kiln for clinker firing. In the rotary kiln, the carbonate is rapidly decomposed and a series of solid-phase reactions take place to produce minerals such as cement clinker. As the material temperature rises near, the minerals will become liquid, dissolved in the liquid phase and react to produce large amounts (clinker). After the clinker is fired, the temperature begins to decrease. Finally, the high-temperature clinker discharged from the rotary kiln is cooled by the cement clinker cooler to the temperatures that can be tolerated by the downstream transport, storage and cement mill, and the sensible heat of the high temperature clinker is recovered to improve the thermal efficiency and clinker quality of the system. Then enter the cement grinding this road will be cement clinker powder.
More information of the Cement Plant Rotary Kiln PLS contact me:
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