Abstract: The calculation models of electric field and temperature field in the continuous graphitization furnace were established. The thermoelectric coupling calculation of the graphitization process was carried out by using the numerical calculation method. Then the distribution of electric field and temperature field in the furnace was obtained. The results show that the heating area of the graphitization furnace is mainly concentrated between the two electrodes. The distribution trends of electric field intensity and current are the same, and the high values of both are distributed near the electrode. The high temperature region is distributed in the middle and lower part of the two electrodes, and the temperature can reach above 2 400.0 ℃. However, the size of the high temperature region is directly related to the electrode parameters. With the narrowing of electrode distance, the high temperature region expands, the temperature peak increases and the temperature raising level increases. With the increase of electrode diameter, the high temperature area expands and the peak temperature increases. With the increase of electrode insertion material length, the high temperature area expands, the temperature peak increases and the temperature raising level decreases.

Key words: Continuous graphitization furnace, Electrode parameter, Temperature field, Electric field

摘要： 建立了连续式石墨化电炉电场、温度场的计算模型，利用数值计算方法对其石墨化过程进行了热电耦合计算，得到炉内电场、温度场的分布规律。结果表明，电炉的发热区域主要集中在两电极之间；电场强度、电流分布趋势相同，两者高值均分布在电极附近；高温区域主要分布在两电极间中下部，温度可达到2 400.0 ℃以上，但其高温区域分布大小、温度峰值与电极参数有直接关系；随着电极间距的缩小，高温区域扩大，温度峰值升高，且温度升高幅度随着电极间距的缩小而增加；随着电极直径的增加，高温区域扩大，温度峰值升高，温度升高幅度随着电极直径的增加而增加；随着电极深入物料长度的增加，高温区域扩大，温度峰值升高，但温度升高幅度随着电极深入物料长度的增加而降低。

关键词: 连续式石墨化电炉, 电极参数, 温度场, 电场