The oxidation resistance study of a novel quasi-molten coating for the prebaked anode

Abstract

Air oxidation is the main cause of the excessive consumption of prebaked anodes, which not only wastes carbon resources but also increases carbon emissions. In this study, a quasi-molten coating with self-healing for prebaked anode by using the slurry method was proposed. This coating utilizes the viscous molten liquid phases to bond the carbon anode, absorbs thermal stress, insulates the carbon anode from the air, and provides self-healing capabilities at elevated temperatures, while the solid phase provides toughening properties. A series of oxidation experiments have shown that the coating has superior oxidation resistance than coatings reported in the literature.