Abstract
The relationship between the content of sodium in the metal in aluminium production cells and the current efficiency (CE) was analysed, using available theory and experimental data. The sodium concentration as well as the CE varies with the bath composition (the bath ratio) and the cathodic overvoltage. The mentioned parameters are all functions of the same type of ratio between the activities of sodium fluoride and aluminium fluoride, thus enabling an internally consistent and quantitative description. The “ideal” relationships between the sodium concentration in the metal, the CE, and the cathodic overvoltage are illustrated. It is suggested that the sodium content in the metal can indeed be used as an indicator of the cell performance. However, it is necessary to use adequate sampling and analysis techniques. The exact cell conditions during sampling should be taken into account as well, such as the bath composition and the overfeeding/underfeeding cycle.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
