Effects Exerted by Slag Carried over From Converter in the Ladle on the Aluminum Assimilation

In the present paper are shown aspects of the influence exerted by the some less controlled parameters of BOF steelmaking, mainly of slag characteristics at tapping. Following the necessities to control the steel deoxidization by aluminum assimilation evaluated by soluble aluminum and its behavior,...

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Main Author: Petre Stelian NIȚĂ
Format: Article
Language:English
Published: Galati University Press 2014-03-01
Series:The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science
Subjects:
Online Access:https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/2649
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author Petre Stelian NIȚĂ
author_facet Petre Stelian NIȚĂ
author_sort Petre Stelian NIȚĂ
collection DOAJ
description In the present paper are shown aspects of the influence exerted by the some less controlled parameters of BOF steelmaking, mainly of slag characteristics at tapping. Following the necessities to control the steel deoxidization by aluminum assimilation evaluated by soluble aluminum and its behavior, the presented data are evaluated based upon direct measurements of dissolved oxygen in steel before tapping, steel temperature before tapping, argon bubbling in tapping ladle under slag at various contents of (FeO), including its final content. The presented data are obtained in full scale plant conditions on standard weight of heats and applying an established steel making technology. It is concluded that steel temperature in final stage of steel making and (FeO) content of slag carried over from BOF to the ladle exert a strong influence on the aluminum assimilation in steel and further on the other quality characteristics of steel. A strong variability of the parameters taken into account is present and this is due to the insufficient control of the amount of slag carried over to the ladle at tapping.
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spelling doaj.art-9174dc5069d04935833aafa0a36bc0b32022-12-21T17:24:04ZengGalati University PressThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science2668-47482668-47562014-03-013712649Effects Exerted by Slag Carried over From Converter in the Ladle on the Aluminum AssimilationPetre Stelian NIȚĂ0"Dunarea de Jos" University of Galati, RomaniaIn the present paper are shown aspects of the influence exerted by the some less controlled parameters of BOF steelmaking, mainly of slag characteristics at tapping. Following the necessities to control the steel deoxidization by aluminum assimilation evaluated by soluble aluminum and its behavior, the presented data are evaluated based upon direct measurements of dissolved oxygen in steel before tapping, steel temperature before tapping, argon bubbling in tapping ladle under slag at various contents of (FeO), including its final content. The presented data are obtained in full scale plant conditions on standard weight of heats and applying an established steel making technology. It is concluded that steel temperature in final stage of steel making and (FeO) content of slag carried over from BOF to the ladle exert a strong influence on the aluminum assimilation in steel and further on the other quality characteristics of steel. A strong variability of the parameters taken into account is present and this is due to the insufficient control of the amount of slag carried over to the ladle at tapping.https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/2649steelslagtapping temperatureFeO in slagaluminum assimilation
spellingShingle Petre Stelian NIȚĂ
Effects Exerted by Slag Carried over From Converter in the Ladle on the Aluminum Assimilation
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science
steel
slag
tapping temperature
FeO in slag
aluminum assimilation
title Effects Exerted by Slag Carried over From Converter in the Ladle on the Aluminum Assimilation
title_full Effects Exerted by Slag Carried over From Converter in the Ladle on the Aluminum Assimilation
title_fullStr Effects Exerted by Slag Carried over From Converter in the Ladle on the Aluminum Assimilation
title_full_unstemmed Effects Exerted by Slag Carried over From Converter in the Ladle on the Aluminum Assimilation
title_short Effects Exerted by Slag Carried over From Converter in the Ladle on the Aluminum Assimilation
title_sort effects exerted by slag carried over from converter in the ladle on the aluminum assimilation
topic steel
slag
tapping temperature
FeO in slag
aluminum assimilation
url https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/2649
work_keys_str_mv AT petresteliannita effectsexertedbyslagcarriedoverfromconverterintheladleonthealuminumassimilation