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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 6    December 2002

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Chemical reaction model of cathode failure in large prebaked anode aluminum reduction cells
ZHAO Qun(赵 群)1, XIE Yan-li(谢雁丽)1,
GAO Bing-liang(高炳亮)1, QIU Zhu-xian(邱竹贤)1
ZHAO Wu-wei(赵无畏)2

1. School of Materials and Metallurgy,
Northeastern University, Shenyang 110004, China;
2. Zhengzhou Light Metals Research Institute, Zhengzhou 450041, China

Abstract:By partial and general dissection of large prebaked alumina electrolysis cells, the macro appearance, chemical composition and phase variations were studied employing actual observations and measurements on the cells together with X-ray diffraction phase analysis and scanning electron microscopy of samples from different locations. According to the practical production, a chemical reaction model of aluminum reduction cell failure was set up in order to reduce the incidence of cell failure and extend pot service life.

 

Key words:  cathode failure, chemical reaction model, large prebaked cell, pot service life

ISSN 1672-7029
CN 43-1423/U

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