Dissolution of Scrap in Hot Metal under Linz–Donawitz (LD) Steelmaking Conditions
One of the main charging materials of the Linz⁻Donawitz oxygen steelmaking process (LD) is scrap. Scrap acts as a coolant for the exothermic reactions inside the LD vessel and as an iron source in addition to hot metal. The optimization of the LD process is focused, amongst other factors,...
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doaj-8997ea005da64983ba5d05a4651d1ee92020-11-25T01:28:28ZengMDPI AGMetals2075-47012018-12-01812107810.3390/met8121078met8121078Dissolution of Scrap in Hot Metal under Linz–Donawitz (LD) Steelmaking ConditionsFlorian Markus Penz0Johannes Schenk1Rainer Ammer2Gerald Klösch3Krzysztof Pastucha4K1-MET GmbH, Stahlstraße 14, A-4020 Linz, AustriaK1-MET GmbH, Stahlstraße 14, A-4020 Linz, Austriavoestalpine Stahl GmbH, voestalpine Straße 3, A-4020 Linz, Austriavoestalpine Stahl Donawitz GmbH, Kerpelystraße 199, A-8700 Leoben, AustriaPrimetals Technologies Austria GmbH, Turmstraße 44, A-4020 Linz, AustriaOne of the main charging materials of the Linz⁻Donawitz oxygen steelmaking process (LD) is scrap. Scrap acts as a coolant for the exothermic reactions inside the LD vessel and as an iron source in addition to hot metal. The optimization of the LD process is focused, amongst other factors, on thermodynamic and kinetic modelling. The results of simulations have to be validated in close to reality laboratory-scale experiments. A study was made on the dissolution behavior of common steel scrap in carbon-saturated hot metal which is charged into LD converters. In order to examine the effect of several parameters on diffusive scrap melting, the difference between stagnant and dynamic dissolution as well as the influence of the hot metal temperature were investigated. Using a literature-based equation the mass transfer coefficient of carbon between the solid scrap and the liquid hot metal was evaluated. The ranges of values of the ablation rate and the mass transfer coefficient for the appropriate systems are pointed out, resulting in a significant dependence of the investigated parameters.https://www.mdpi.com/2075-4701/8/12/1078basic oxygen furnace steelmakingmass transfer coefficientscrap dissolutionthermodynamicsprocess modelling |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Florian Markus Penz Johannes Schenk Rainer Ammer Gerald Klösch Krzysztof Pastucha |
spellingShingle |
Florian Markus Penz Johannes Schenk Rainer Ammer Gerald Klösch Krzysztof Pastucha Dissolution of Scrap in Hot Metal under Linz–Donawitz (LD) Steelmaking Conditions Metals basic oxygen furnace steelmaking mass transfer coefficient scrap dissolution thermodynamics process modelling |
author_facet |
Florian Markus Penz Johannes Schenk Rainer Ammer Gerald Klösch Krzysztof Pastucha |
author_sort |
Florian Markus Penz |
title |
Dissolution of Scrap in Hot Metal under Linz–Donawitz (LD) Steelmaking Conditions |
title_short |
Dissolution of Scrap in Hot Metal under Linz–Donawitz (LD) Steelmaking Conditions |
title_full |
Dissolution of Scrap in Hot Metal under Linz–Donawitz (LD) Steelmaking Conditions |
title_fullStr |
Dissolution of Scrap in Hot Metal under Linz–Donawitz (LD) Steelmaking Conditions |
title_full_unstemmed |
Dissolution of Scrap in Hot Metal under Linz–Donawitz (LD) Steelmaking Conditions |
title_sort |
dissolution of scrap in hot metal under linz–donawitz (ld) steelmaking conditions |
publisher |
MDPI AG |
series |
Metals |
issn |
2075-4701 |
publishDate |
2018-12-01 |
description |
One of the main charging materials of the Linz⁻Donawitz oxygen steelmaking process (LD) is scrap. Scrap acts as a coolant for the exothermic reactions inside the LD vessel and as an iron source in addition to hot metal. The optimization of the LD process is focused, amongst other factors, on thermodynamic and kinetic modelling. The results of simulations have to be validated in close to reality laboratory-scale experiments. A study was made on the dissolution behavior of common steel scrap in carbon-saturated hot metal which is charged into LD converters. In order to examine the effect of several parameters on diffusive scrap melting, the difference between stagnant and dynamic dissolution as well as the influence of the hot metal temperature were investigated. Using a literature-based equation the mass transfer coefficient of carbon between the solid scrap and the liquid hot metal was evaluated. The ranges of values of the ablation rate and the mass transfer coefficient for the appropriate systems are pointed out, resulting in a significant dependence of the investigated parameters. |
topic |
basic oxygen furnace steelmaking mass transfer coefficient scrap dissolution thermodynamics process modelling |
url |
https://www.mdpi.com/2075-4701/8/12/1078 |
work_keys_str_mv |
AT florianmarkuspenz dissolutionofscrapinhotmetalunderlinzdonawitzldsteelmakingconditions AT johannesschenk dissolutionofscrapinhotmetalunderlinzdonawitzldsteelmakingconditions AT rainerammer dissolutionofscrapinhotmetalunderlinzdonawitzldsteelmakingconditions AT geraldklosch dissolutionofscrapinhotmetalunderlinzdonawitzldsteelmakingconditions AT krzysztofpastucha dissolutionofscrapinhotmetalunderlinzdonawitzldsteelmakingconditions |
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1725101457573675008 |