Desulphurisation ability of blast furnace slag containing high Al2O3 and 5 mass% TiO2 at 1773 K. (27th May 2016)

• Record Type: Journal Article
• Authors: Zhang, Jie; Lv, Xuewei; Yan, Zhiming; Qin, Yuelin; Bai, Chenguang
• Is Part Of: Ironmaking & steelmaking. Volume 43:Number 5(2016)
• Page Start: 378
• Page End: 384
• Publication Date: 2016-05-27
• Subjects: Sulphide capacity -- Sulphur distribution ratio -- Molecular dynamics -- Free oxygen -- Alumina; Iron industry and trade -- Periodicals; Steel industry and trade -- Periodicals; 669.1
• DOI: 10.1080/03019233.2015.1104070
• Languages: English
• ISSNs: 0301-9233

Abstract

Abstract : The sulphide capacities ( C S ) of CaO–SiO2 –Al2 O3 –MgO–TiO2 blast furnace slags were experimentally measured at 1773 K, and the percentages of free oxygen ions (O 2− ) and bridge oxygen (O 0 ) of molten slag were calculated using molecular dynamics at 1773 K. The measured and calculated results were closely correlated with the change in CaO/SiO2, MgO, and Al2 O3 contents in the slag. The results show that C S increases with increasing CaO/SiO2 and MgO contents in the slag, but decreases with increasing Al2 O3 content. The effects of O 2− and O 0 on C S were analysed using multiple linear regression, and results show that sulphide increases with the increase in the mass percentage of free oxygen and decreases with the increase in the mass percentage of bridge oxygen.