铝电解槽低散热理想状态的研究  

Research on reasonable heat distribution of aluminum reduction pots under low-voltage condition

作　　者：王俊青 李昌林 周云峰 方斌 王俊伟 Wang Junqing;Li Changlin;Zhou Yunfeng;Fang Bin;Wang Junwei(Zhengzhou Non-Ferrous Metals Research Institute Co., Ltd. of CHALCO,Zhengzhou 450041,China;China National Engineering and Technology Research Centre for Aluminium,Zhengzhou 450041,China)

机构地区：[1]中国铝业郑州有色金属研究院有限公司,河南郑州450041 [2]国家铝冶炼工程技术研究中心,河南郑州450041

出　　处：《轻金属》2019年第5期26-29,共4页Light Metals

摘　　要：将铝电解槽整个散热体系划分为阳极区散热(上部散热)和阴极区散热(下部散热),其中阳极区包括烟气、上部结构、槽罩板和槽沿板;阴极区包括阴极区侧部和槽底,而阴极区侧部还可细分为侧部熔体区、侧部阴极区和侧部耐火保温区。本文以200 kA电解槽为例,通过现场实际测量结果和分析计算,给出了低电压运行条件下铝电解槽较小且比较合理的散热分布状况,同时分析了电解温度、两水平、氧化铝单耗、阳极毛耗和阳极净耗等工艺条件对能量平衡的影响。The heat emission system of aluminum reduction pot is divided into the anode heat emission ( upper heat emission) and cathode heat emission (lower heat emission). The anode region includes the flue gas, superstructure, the pot cover plate and the edge plate;The cathode region includes a side portion and the pot bottom, while the cathode side portion can also be divided into the melt zone of the side portion, the side portion of the cathode region and the side portion of the refractory insulation zone. We took a 200 kA aluminum reduction pot as an example in this paper. The relatively smaller and more reasonable heat distribution was obtained based on the actual measurement results and calculation under the low - voltage operating condition of alu minum reduction pot. Meanwhile, the influence on the energy balance was also analyzed from perspectives of the reduction temperature, two levels, alu mina unit consumption, anode gross consumption and anode net consumption as well as other process conditions.

关 键 词：铝电解槽 低电压 散热 能量平衡 

分 类 号：TF821[冶金工程—有色金属冶金]