The aluminum spent cathode carbon block (SCCB) is defined as a hazardous material because it contains soluble fluoride and toxic cyanide compounds. To make the SCCB harmless, it has been proposed to separate the carbon and fluoride salts using a high-temperature resistance furnace. To evaluate the temperature distribution and heat transfer of the furnace, the effective thermal conductivity of SCCB was calculated by numerical simulation, and the results were compared with fundamental structural models. After considering the radiative heat transfer, the effective thermal conductivity of SCCB increased as the temperature increased. When the high-temperature resistance furnace was heated for 10 h under two conditions, considering radiation at the monitoring point, the temperature was found to be 61°C higher than that without considering radiation. Moreover, the volatilization rate of fluoride salts of the two models differed by 15.6%. This indicates that the temperature distribution in the furnace is uniform when the radiation effect is included.

中文翻译：

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废阴极炭块处理炉有效热导率和传热特性的数值研究

废铝阴极碳块 (SCCB) 被定义为危险材料，因为它含有可溶性氟化物和有毒氰化物化合物。为了使 SCCB 无害，有人建议使用耐高温炉分离碳盐和氟盐。为了评估炉膛的温度分布和传热，通过数值模拟计算了 SCCB 的有效热导率，并将结果与​​基本结构模型进行了比较。在考虑辐射传热后，SCCB 的有效热导率随着温度的升高而增加。当高温电阻炉在两种条件下加热10 h时，考虑到监测点的辐射，发现温度比不考虑辐射的温度高61℃。而且，两种型号的氟盐挥发率相差15.6%。这表明当考虑辐射效应时，炉内温度分布是均匀的。