Flux Optimization During Tapping in BOF Process
An integrated Plate Mill has started its operation on July 7, 2010 in Gwangyang Steelworks, POSCO. The production capability is about 2.5 million tons per year and the main stream consists of Blast Furnace, Hot metal pretreatment (KR), Converter, Bubbling Station, RH/VTD and Continuous Casting. Particularly, it is possible to control sulfur concentration at excellent level in BOF without any further treatment in LF or VTD, which is attained by unique KR process and scrap usage strategy in BOF. In this paper, desulfiirization efficiency and steel cleanliness was introduced by optimizing flux amount during tapping in BOF process. In addition, the effect of the flux addition on the refractory of ladle was investigated based on EPMA analyses with the viewpoint of phase diagram. The cleanliness of each sample was examined using optical emission spectrometry and oxygen nitrogen determinator.
plate mill steel cleanliness flux tapping
Hyun-Seo PARK Sung-Mo SEO Ji-Tae KWON Joo CHOI
Steelmaking Research Group, POSCO Technical Research Laboratories, 699, Gumho-dong, Gwangyang-si, Je Technology development team, plate rolling department, Gwangyang Steelworks, POSCO, Gumho-dong,Gwang
国际会议
The 2nd International Symposium on Clean Steel(第二届洁净钢生产技术学术研讨会)
沈阳
英文
148-152
2011-08-23（万方平台首次上网日期，不代表论文的发表时间）