Digital characterization and mathematic model of sodium penetration into cathode material for aluminum electrolysis
来源期刊:中南大学学报(英文版)2009年第1期
论文作者:吕晓军 李庆余 赖延清 李劼
文章页码:96 - 100
Key words:aluminum electrolysis; cathode; sodium expansion; modeling; characterization
Abstract: The sodium expansion curves of semi-graphitic cathode and TiB2/C composite cathode with different TiB2 contents were measured with the improved Rapoport-Samoilenko apparatus. The mathematic model of the sodium expansion was deduced on the basis of the experimental results. The sodium expansion parameter (a) and penetration rate factor (Q), were introduced into the model. The model was validated with the experimental sodium expansion curves self-measured and reported. The results show that the variation tendency of the sodium expansion parameter (a) and penetration rate factor (Q) is consistent with that of the experimental curves. The model is capable of not only conveniently judging the cathode quality, but also favorably establishing a unified standard of the resistance to sodium penetration of cathode.
基金信息:the Major State Basic Research and Development Program of China
the National High-Tech Research and Development Program of China
the Science Fund Project of Guangxi Province, China