Abstract
Abstract Addition of iron powder is found to be a promising solution to the structure degradation of MgO–C refractory during oxidation, but it may reduce the high temperature properties. To clarify this issue, the influence of Fe addition on the refractoriness under load, creep behavior and slag corrosion resistance in oxidizing atmosphere was investigated. MgO–C refractory exhibited a high maximum working temperature (T0.5, 1720 °C). However, its creep rate at 1550 °C increased rapidly with time because of severe oxidation, causing a failure at an earlier stage. The Fe-containing refractory showed a bit lower refractoriness (T0.5, 1698 °C), while its creep resistance has been greatly improved (1.0% deformation after 50 h duration). The remarkable increase in the bonding degree during oxidation is considered as the main mechanism for the long-term structural stability. Both type of refractories showed good corrosion resistance to oxidized slag due to the presence of graphite and dense MgO layer, but the Fe-containing refractory was more difficult to be penetrated by the slag after graphite oxidation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
