Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Modeling of reactions between gas bubble and molten metal bath-experimental validation in the case of decarburization of Fe-Cr-C melts
Division of Materials Process Science, Royal Institute of Technology (KTH).
Department of Metallurgical Engineering, Indian Institute of Technology, Bombay.
Division of Materials Process Science, Royal Institute of Technology (KTH).
2009 (English)In: High Temperature Materials and Processes, ISSN 0334-6455, E-ISSN 2191-0324, Vol. 28, no 6, p. 407-419Article in journal (Refereed) Published
Abstract [en]

A theoretical generic model describing the mass transfer phenomena between rising gas bubbles and a metal bath has earlier been developed by the present authors, to predict the composition change in the melt as •. consequence of blowing different oxidant gases. In order to verify the model predictions, a series of experiments involving reactions between Fe-Cr-C melts and different O2-CO2 gas mixtures were carried out. The results showed that the decarburization deviates significantly from thermodynamic paths predicted on the basis of bulk compositions and that the model was able to make reasonably reliable predictions of the changes of chromium and carbon contents in the melt as a function of time. According to the model, the compositions at the vicinity of injection point as well as at the gas-melt interface in the bubble are likely to be far from that in the bulk. The results of the present set of experiments showed, with CO2 injection, the utilization of the available oxygen for decarburization was higher as compared to O2 injection in the case of melts containing higher carbon levels (>lmass%). Reverse is the case in low carbon melts. The results also indicate relatively less Cr-losses from the metal bath when CO2 is used as the oxidant. As the model predictions are found to be reasonably reliable, the model predictions are extended to predict the impact of the variation of different process parameters.

Place, publisher, year, edition, pages
2009. Vol. 28, no 6, p. 407-419
Identifiers
URN: urn:nbn:se:ltu:diva-4563Local ID: 2879682f-65f6-40c3-ad53-0676fe302f78OAI: oai:DiVA.org:ltu-4563DiVA: diva2:977437
Note
Upprättat; 2012; 20121024 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

Open Access in DiVA

No full text in DiVA

Search in DiVA

By author/editor
Nurni, Viswanathan
In the same journal
High Temperature Materials and Processes

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 18 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf