Critical Assessment of the Applicability of the Foaming Index to the Industrial Basic Oxygen Steelmaking Process. Issue 1 (28th July 2020)

• Record Type: Journal Article
• Authors: De Vos, Lotte; Cnockaert, Vincent; Bellemans, Inge; Vercruyssen, Carina; Verbeken, Kim
• Is Part Of: Steel research international. Volume 92:Issue 1(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-07-28
• Subjects: basic oxygen steelmaking -- foaming -- slag -- steelmaking; Steel -- Periodicals; Steel -- Metallurgy -- Periodicals; 669.142
• DOI: 10.1002/srin.202000282
• Languages: English
• ISSNs: 1611-3683

Abstract

Abstract : The goal of this work is to assess the applicability of the concept of a "slag foaming index" on industrial data. For this purpose, process data from the steel plant of ArcelorMittal Ghent are used. An acoustic measurement is used to identify the heats with high levels of slag foaming. A model based on process data is developed to estimate the slag's composition during the converter process. The results of this model, together with industrial data on the slag's end composition, are used as input to calculate the slag's viscosity, density, and surface tension. Subsequently, the calculated foaming indices are compared with the acoustic measurements from industry. No distinct link between the calculated foaming index and the slopping behavior of the industrial slag is observed. Furthermore, it is observed that the slag's viscosity is the dominant parameter in the foaming index for the industrial slags. In conclusion, it seems that the calculated foaming index cannot be used as a tool to identify foamy slags within the considered industrial context. Abstract : This work assesses the applicability of a "foaming index" on industrial data from the ArcelorMittal Ghent steel shop. No distinct link between the calculated foaming index and the measured foaming behavior of the industrial slag is observed. Furthermore, it is observed that the slag's viscosity is the dominant parameter in the foaming index for the industrial slags.