Cathodic Performance of Typical Sacrificial Anodes in Sulfur Recovery Catalyst Solution

By galvanostatic experiment, the electrochemical performances of six kinds of common sacrificial anodes in sulfur recovery catalyst solutions of different temperatures were tested. The results showed that the high-silicon cast iron sacrificial anode had the best overall performance. The open circuit potential and working potential of the high-silicon cast iron were stable, its surface dissolved evenly, and the current efficiency was the highest at relatively high temperature, with 89.7% at 60 ℃. What's more, the dissolved production Fe²⁺ had no negative effect on the performance of the catalyst. Therefore, the high-silicon cast iron is an ideal sacrificial protection anode material for sulfur recovery unit.