| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Energy Technologies and CO2 Management
|
| Presentation Title |
Thermodynamic Study on CO2 Capture by Steel Slag/Molten Salt |
| Author(s) |
Yan Wang, Hongyan Yan, Bo Yuan, Yang Liu |
| On-Site Speaker (Planned) |
Hongyan Yan |
| Abstract Scope |
Climate change caused by CO2 emissions is one of the most severe challenges. Research on CO2 capture has received widespread attention. To achieve low-cost capture of CO2, an innovative path for capture of CO2 by steel slag/molten salt was proposed. The thermodynamic behavior of synergistic capture of CO2 by steel slag/molten salt was theoretically analyzed. The results showed that below 1000℃, molten salts and all phases in steel slag reacted chemically with CO2, and the reaction order from 600 to 1000℃ was Na2O>K2O>Li2O>CaO>Ca2SiO4>Ca2Fe2O5>MgO>FeO>CaAl2Si2O8. The conversion temperature of CO2 capture by each phase in steel slag was between 200 and 900℃, and the conversion temperature of CO2 capture in molten salt was higher than steel slag. With the increase of CO2 partial pressure, conversion temperature increased. Under above thermodynamic conditions, steel slag captured 33.3 grams of CO2 per 100 grams in theory, Ca2SiO4 in steel slag had the best capture effect. |
| Proceedings Inclusion? |
Planned: |