Inclusion Modification Due to Reduction of CaO & MgO by Al

摘要：

　　As Al contents in advanced steels increase,the possibility exists that Al will reduce Ca and Mg from slag or refractory.Excessive Ca or Mg transfer would form solid inclusions that can cause nozzle clogging.This study focuses on identifying the effect of slag chemistry and time on CaO and MgO reduction.Fe-Al melts containing 2wt%Al alloys were reacted under three different slag conditions(no slag,no MgO in slag and MgO saturated slag)in dense MgO crucibles at 1600℃.Both Ca and Mg transfer were observed in all cases,forming pure MgO as a transient phase evolving to complex Mg-Ca-Al-O inclusions.The findings herein show that Mg and Ca transfer occur simultaneously and the results suggest the kinetics are determined by mass transfer control of both Ca and Mg in the metal.

关键词： slag reduction Ca transfer Mg transfer inclusion formation

作者: Haoyuan MU Bryan A. WEBLER Richard J. FRUEHAN

作者单位: Center for Iron and Steelmaking Research,Carnegie Mellon University,Pittsburgh,PA,15213,USA

会议类型: 国际会议

会议名称: the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)

会议地点: 北京

会议语种:英文

页码: 785-788

在线出版日期: 2015-05-12（万方平台首次上网日期，不代表论文的发表时间）