About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Electrification of Iron and Steel
|
| Presentation Title |
A Volume Expansion Decarburization Kinetics of a Fe-1wt%.C Liquid Steel by Varying Ar-CO2 Ratio Used for Electric Arc Furnace |
| Author(s) |
Yongsug Chung, Joonho Lee |
| On-Site Speaker (Planned) |
Yongsug Chung |
| Abstract Scope |
To achieve the 2050 Net-ero goal, the application of CCUS (Carbon Capture Utilization and Storage) technology is increasing in the steel manufacturing process. The stored CO2 can be used as a bottom-blowing gas in electric furnaces with Ar gas. The blown CO2 reacts with the carbon in the liquid steel to produce twice as much CO, which can increase the stirring effect of the liquid steel. Studies have been conducted on decarburization behavior by the flow rate of CO2 gas. However, researches considering gas volume expansion of the decarburization reaction (C+CO2=2CO) are insufficient. The decaburization experiment was conducted using high-frequency induction furnace equipment at1873K. The decarburization reaction rate (dC/dt) linearly increased as increasing CO2 ratio. This study newly suggests a volume expansion model that considers gas volume expansion and CO/CO2 composition in gas phase. Finally, the rate-controlling step will be suggested. |