Study on Bubble Behavior on Anode in Aluminum Electrolysis-Part Ⅰ

摘要

A taylor made data recorder was used to continuously measure cell voltage fluctuation status during electrolysis in lab scale. Anode gas bubbles generation and departure process that causes cell voltage fluctuation was analyzed. Average values of the voltage peaks were calculated. The effects of anode current densities and anode sizes on bubble size and bubble departure rate were discussed. It was found that bubble size changed largely at different anode current density and also affected by anode sizes. The bubble departure rate was also affected by anode current densities and anode sizes. The bubble-releasing rate became stable at a specific current density for certain anode size.