| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Late News Poster Session
|
| Presentation Title |
L-64: In Situ Observation Study of MgO–C Dissolution Behavior in CaO–SiO2–Al2O3 Slag at High Temperature |
| Author(s) |
Yongsug Chung, Seungwook Lee |
| On-Site Speaker (Planned) |
Yongsug Chung |
| Abstract Scope |
In situ dissolution behavior of MgO–C (0~18 wt%) in CaO–SiO2–Al2O3 slag was observed using a Single Hot Thermocouple Technique (SHTT) at 1550 C. When the slag was completely melted, MgO–C particles were added, and the dissolution behavior was observed in real time. Comparing the dissolution behavior of MgO and MgO–C revealed that the dissolution time of MgO was shorter than that of MgO–C with bubble formation. When the C content of MgO–C was 10 wt% or more, particle fragmentation was observed, and the dissolution time decreased. The main reaction of bubble formation was C(s) + SiO2(l) = CO(g) + SiO(g) based on thermodynamic analysis and weight loss measurements where the total partial pressure was PT = PCO + PSiO = 0.18 atm. The dissolution behavior of MgO–C in slag strongly depended on the effective C surface area. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Iron and Steel, Ceramics, Characterization |