Numerical Simulation of Temperature Field in Rotary Kiln during Limonite Magnetization Roasting
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摘要:
回转窑是一种重要的加热用工业大型设备，测定和计算其内部的热量、温度分布对于合理设计转窑以及运行过程中物料的流量、加热温度等工艺参数的设定，以期达到节省能源的目的具有重要意义。本文分析了褐铁矿在回转窑内部还原焙烧过程中热量、燃气温度、物料温度、窑壁温度随窑长的变化，计算结果与测定结果较一致，对于理解热量以及温度的分布规律，合理安排烟气燃烧和物料分布的工艺参数具有一定意义。
Abstract:Rotary kiln is an important industrial large-scale heating equipment. Measuring and calculating its internal heat and temperature distribution is of great significance for the reasonable design of rotary kiln and the setting of process parameters such as material flow rate and heating temperature in the process of operation, so as to achieve the purpose of saving energy. This paper analyzes the variation of heat, gas temperature, material temperature and kiln wall temperature with kiln length in the process of limonite reduction roasting in rotary kiln. The calculated results are in good agreement with the measured results. It is of certain significance to understand the distribution law of heat and temperature and reasonably arrange the process parameters of flue gas combustion and material distribution.
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