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ZnFe2O4-based inert anodes were made to conduct the aluminum electrolysis tests. The corrosion behaviors of the inert anodes were examined and discussed. Experiment results prove that: (1) ZnFe2O4-based inert anodes are good corrosion resistant to AlF3-NaF-Al2O3 melts under the conditions of anodic polarization; (2) High anodic current density ( > 1.5 A·cm-2), high alumina concentration and low ratio of NaF/AlF3 in the molten salts will be the most important conditions for using inert anode.
The results are as follows: (1) ZnFe2O4-based inert anodes were good corrosion resistant to AlF3-NaF-Al2O3 melts (2) High anodic current density (> 1.5 A · cm-2), high alumina concentration and low ratio of NaF / AlF3 in the molten salts will be the most important conditions for using inert anode.