【摘要】 以含活性炭的Fe₂O₃粉末为研究对象,在氩气保护下对其进行微波还原焙烧实验.研究了Fe₂O₃还原焙烧的升温特性,同时对含碳Fe₂O₃试样在微波场中升温过程进行数值模拟.基于微波加热的特点及加热过程建立数学模型,确定了模拟计算所需的边界条件,利用C语言编程,实现了微波加热含碳Fe₂O₃的数值模拟过程;同时,根据能量守恒关系计算出微波耗散功率与物料升温的关系,模拟出含碳Fe₂O₃粉末的微波加热升温曲线,与实验所测的微波加热升温曲线拟合较好,为研究物料在微波场中的升温过程提供了理论依据.更多还原

【Abstract】 The microwave reduction roasting process for Fe₂O₃ powders containing activated carbon was studied experimentally,where Argon gas was used as protective gas.The characteristic relation of rising temperature was researched and the numerical simulation of microwave heating was made for Fe₂O₃ powders containing carbon.Based on the microwave heating characteristics and microwave heating process,a mathematical mode was established and the necessary boundary conditions was determined,and a numerical simulation of the microwave heating process was achieved by using C language programming.Meanwhile,according to energy conservation,the relationship between the microwave dissipation power and the temperature rising of the heated materials was obtained,and the simulated temperature curve of the microwave heating for Fe₂O₃ powder containing carbon was made,which fitted well with the microwave heating curve obtained from the experiment,providing a theoretical basis for the study of the heating process of material in the microwave field.更多还原