Modification of Inclusions in Liquid Iron by Mg Treatment
Modification of Inclusions in Liquid Iron by Mg Treatment作者机构：Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education) Northeastern University Laiwu Steel Company Ltd.Shandong Iron & Steel Group Co. Ltd.
出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)
年 卷 期：2014年第21卷第S1期
页 面：99-103页
核心收录：
学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程]
基 金：Item Sponsored by National Natural Science Foundation of China(50904017) Fundamental Research Funds for the Central Universities of China(N120502004,N120602005)
主 题：magnesium inclusion deoxidation desulfuration thermodynamic
摘 要：Effect of Mg addition on the compositions of inclusions were studied. The results show that Mg can minimize the inclusions of steel obviously. Under the present condition, Mg deoxidation products of low-S content experimental steel would be changed in the order of Al2O3→MgAl2O4→Mg–Al–O–S→Mg–O–S. Mg deoxidation products of high-S content experimental steel generate Mg–S(–O)+MnS type inclusions, except for usual oxysulfide. And it is consistent with the results of thermodynamics calculation. Mg is preferred to react with oxide, compared with sulfide. The reaction reaches the equilibrium after 1 min or 5 min. It shows that the number and diameter of inclusions in all experimental steel samples are well under control, helping to improve the properties of steel.
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