Effect of temperature on oxygen activity during ladle treatment

Johan Björklund, Takahiro Miki, Margareta Andersson, P. Ä R. Jönsson

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The effect of temperature on oxygen activity in steel was studied in plant trials where temperature and oxygen activity were measured at two depths and at the same time during different parts of ladle refining. The results show that large temperature gradients exist towards the surface of the steel melt for the sampling occasion when no slag is present on the steel surface, as can be expected. It was also observed that the oxygen activity is higher in the lower measurement position than in the upper during the majority of the ladle refining. This is explained by the oxygen activity's temperature dependence. By using the data from this study and previously reported plant trials it was shown that Si-SiO2 or Al-Al2O3 equilibrium controls the oxygen activity.

Original languageEnglish
Pages (from-to)438-445
Number of pages8
JournalIsij International
Volume48
Issue number4
DOIs
Publication statusPublished - 2008

Keywords

  • Deoxidation
  • Equilibrium
  • Ladle
  • Oxygen activity
  • Steel
  • Temperature

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Effect of temperature on oxygen activity during ladle treatment'. Together they form a unique fingerprint.

Cite this