Measurement of Hot-Spot Optical Emission Spectrum from Industrial Electric Arc Furnace Used in Making of Carbon Steel

摘要：

　　Due to the need of ever higher energy efficiency,new information on process conditions inside electric arc furnace(EAF)in carbon steelmaking is required.To obtain new information,on-line in situ optical emission spectrum measurements were conducted at Ovako Imatra Oy Ab 75 ton capacity electric arc furnace(EAF).The measurement head was aimed at one of the furnace hot-spots.The measured emission spectra consisted of alkali metal transitions,thermal radiation and CCD dark current.The observed alkali transitions are related to the foaming and oxygen injection to the EAF and the results indicate that alkali transitions can be used in analysis of slag foaming.The comparison between calculated scrap melting signal and the start of the foaming shows clear correlation to the overall energy consumption per ton of the heat,which suggests that on-line in situ optical emission spectrometry can be used in optimization of slag foaming.

关键词： emission spectroscopy on-line EAF

作者: Matti AULA Ville FOMKIN Timo FABRITIUS

作者单位: Process Metallurgy Research Group,University of Oulu,Oulu,Finland Ovako Imatra Oy Ab,Imatra,Finland

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: 283-284

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）