| 학회 | 한국재료학회 |
| 학술대회 | 2009년 봄 (05/21 ~ 05/22, 무주리조트) |
| 권호 | 15권 1호 |
| 발표분야 | 에너지환경재료 |
| 제목 | Effect of Na2O on desulfurization for flourineless for eco-process |
| 초록 | Recently, the eco-friendly process has been a matter of primary concerns according to increase of the protection of environment such as reducing C, F and so on. In steelmaking process, especially desulfurization process, it is general to use F containing slag, CaO-SiO2-CaF2 which is well-known an effective desulfurization system. Desulfurization is very important to produce special alloys with high strength and corrosion resistance. High S removal ability from metal to slag, that is, sulfide capacity(Cs2-) could be achieved by adding Na2O into slags because it has a strong potential to offer the O2- which acts desulfurization increaser as following reaction; [S]+(O2-)=(S2-)+1/2O2. In order to study sulfide capacity, metal alloys were equilibrated with CaO-SiO2-CaF2-MgOsatd. slags including different Na2O contents at 1623~1723K under CO/CO2 gas mixtures. Contents of Na2O were generally increased desulfurization, especially in low CaO/SiO2 ratio (basicity) region. And temperature showed a small effect in low basicity region, but it was getting larger as increasing basicity. Low basicity slag means that additions of CaO decrease, and operating temperature decreases. Therefore it could be concluded that additions of Na2O lead effective reduction of CaF2 with raising the efficiency of process. |
| 저자 | Jin Cheng1, 조문경2, 민동준1 |
| 소속 | 1Department of Metallurgical Engineering, 2YONSEI Univ. |
| 키워드 | Na2O; desulfurization; flourineless; eco –process; sulfide capacity; basicity |
