Hyppää sisältöön
    • FI
    • ENG
  • FI
  • /
  • EN
OuluREPO – Oulun yliopiston julkaisuarkisto / University of Oulu repository
Näytä viite 
  •   OuluREPO etusivu
  • Oulun yliopisto
  • Avoin saatavuus
  • Näytä viite
  •   OuluREPO etusivu
  • Oulun yliopisto
  • Avoin saatavuus
  • Näytä viite
JavaScript is disabled for your browser. Some features of this site may not work without it.

On-line analysis of Cr₂O₃ content of the slag in pilot scale EAF by measuring optical emission spectrum of electric arc

Aula, Matti; Demus, Thorsten; Echterhof, Thomas; Huttula, Marko; Pfeifer, Herbert; Fabritius, Timo (2017-03-23)

 
Avaa tiedosto
nbnfi-fe201804056340.pdf (549.8Kt)
nbnfi-fe201804056340_meta.xml (37.50Kt)
nbnfi-fe201804056340_solr.xml (33.91Kt)
Lataukset: 

URL:
https://doi.org/10.2355/isijinternational.ISIJINT-2015-677

Aula, Matti
Demus, Thorsten
Echterhof, Thomas
Huttula, Marko
Pfeifer, Herbert
Fabritius, Timo
Iron and Steel Institute of Japan
23.03.2017

Matti Aula, Thorsten Demus, Thomas Echterhof, Marko Huttula, Herbert Pfeifer, Timo Fabritius, On-line Analysis of Cr2O3 Content of the Slag in Pilot Scale EAF by Measuring Optical Emission Spectrum of Electric Arc, ISIJ International, Released March 23, 2017, Online ISSN 1347-5460, Print ISSN 0915-1559, https://doi.org/10.2355/isijinternational.ISIJINT-2015-677, https://www.jstage.jst.go.jp/article/isijinternational/57/3/57_ISIJINT-2015-677/_article/-char/en

https://rightsstatements.org/vocab/InC/1.0/
© 2017 ISIJ. Published in this repository with the kind permission of the publisher.
https://rightsstatements.org/vocab/InC/1.0/
doi:https://doi.org/10.2355/isijinternational.ISIJINT-2015-677
Näytä kaikki kuvailutiedot
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe201804056340
Tiivistelmä

Abstract

Control of slag Cr₂O₃ content is essential in stainless steelmaking electric arc furnace (EAF). Excessive Cr₂O₃ content of slag lead to high Cr₂O₃ content after the EAF tapping, since the solid precipitates forming in high Cr₂O₃ contents are not reduced significantly during the tapping procedure. In this work the slag Cr₂O3 content during the EAF process was analysed by measuring the optical emission spectrum of the electric arc. The measurements were conducted in a pilot EAF situated in Aachen, Germany. Cr₂O₃ content of the slag was increased with periodical additions of Cr₂O₃ powder. The line ratios calculated from the optical emission spectra were compared to the results of the X-ray fluorescence (XRF) analysis of the slag samples taken from the furnace. The results indicate that best accuracy in a pilot scale can be obtained by using Ca I, Fe I or Mn I lines as reference for Cr I lines. By combining the most accurate line ratios of these three components, the Cr₂O₃ composition of the slag could be measured with an average absolute error of 0.62%-points and a standard deviation of 0.49%-points. The results suggest that Fe I and Mn I lines are the most promising reference lines for analysing Cr₂O₃ content of industrial EAF slag.

Kokoelmat
  • Avoin saatavuus [37887]
oulurepo@oulu.fiOulun yliopiston kirjastoOuluCRISLaturiMuuntaja
SaavutettavuusselosteTietosuojailmoitusYlläpidon kirjautuminen
 

Selaa kokoelmaa

NimekkeetTekijätJulkaisuajatAsiasanatUusimmatSivukartta

Omat tiedot

Kirjaudu sisäänRekisteröidy
oulurepo@oulu.fiOulun yliopiston kirjastoOuluCRISLaturiMuuntaja
SaavutettavuusselosteTietosuojailmoitusYlläpidon kirjautuminen