|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||8th International Symposium on High Temperature Metallurgical Processing
||Evaluation of High Temperature Refractory Corrosion by Liquid Al2O3-Fe2O3-MgO-SiO2
||Christoph Sagadin, Stefan Luidold, Christine Wenzl, Christoph Wagner
|On-Site Speaker (Planned)
Corrosion mechanism have been investigated between MgO refractory substrates and FeNi slags. The slags taken into consideration comprised a simple synthetically mixed slag with specific oxides and a real slag from a ferroalloy producer. The MgO refractory substrates with the slag specimens on it were heated in a hot stage microscope to three different characteristic temperatures. The experiments proceeded under a controlled gas atmosphere that simulates the relevant process conditions. The corrosion mechanisms of each system were determined by SEM analyses. The obtained results showed that slag corrosion is dominating with a pronounced partial dissolution of refractory. It was also observed that iron oxide present in the slag diffused into the coarse refractory grains forming the relative low melting magnesia wuestite. Finally, the comparison of these findings with those predicted by thermodynamic calculation (FactSage) indicated the corrosion mechanisms and draw implications for improving the refractory performance and lifetime.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)