Estimate of the surface tension and the viscosity of the slag in the magnesium injection process
Sulfur content of steel can be reduced to a lower level with a low content of hot metal, which can be implanted by employing the magnesium injection process in the blast furnace to have an efficient desulfurization of the liquid iron. However, the slag surface tension and viscosity will change with the increase of MgS content of desulfurization product, which may cause operation trouble. It is necessary to know the relationship between the surface tension and viscosity with the composition of MgS contained slag. In this paper, the melting temperature and surface tension of FetO-SiO2-CaO- MgO-Al2O3-TiO2-MnO-MgS slag with different compositions including magnesium sulfide will be first evaluated with the sessile drop contact angle method. The viscosity is then predicted by using the optical basicity ratio model. Furthermore, by applying Pelofsky equation, the surface tension could be calculated with the viscosity values. Finally, the experimental surface tension is correlated with measured values.
Viscosity Surface tension Optical Basicity Magnesium sulfide Pelofsky eq
Lian Shuang-Shii Wu Tian Cheng Zhang Guling Lu Mu Rong
Department of Material Science and Engineering National Taiwan University, Taipei, Taiwan China Steel Company, Kaohsiung, Taiwan
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-9
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）