Top slag optimization in an ASEA-SKF ladle furnace
2011 (English)In: Proceeding of the Richard J. Fruehan Symposium: Physical Chemistry of Sustainable Metals, USA: AIST (Association for Iron & Steel Technology) , 2011, 311-320 p.Conference paper (Refereed)
The aim of this study was to increase the sulphur distribution ratio between slag and steel of the synthetic top slag that was used in the ASEA-SKF treatment plant of Ovako Hofors AB. In this paper the synthetic top slag of the ASEA-SKF ladle furnace was studied by means of thermodynamic calculations using the TC-LiMeS software. It was thus concluded that if fluorite was added to the synthetic top slag (%S)/[%S] ratio would be enhanced. By considering this, four plant test charges with addition of fluorite to the top slag were performed and compared with 24 reference charges that had already been produced in the same plant. The final results showed that by adding 200 kg fluorite to a top slag of 1200 kg, it was possible to achieve a steel sulphur content of less than 10 ppm and a (%S)/[%S] ratio of 1570.
Place, publisher, year, edition, pages
USA: AIST (Association for Iron & Steel Technology) , 2011. 311-320 p.
Ladle furnace, Desulphurization, Fluorite, Steel, Slag, TC-LiMeS, Thermo-Calc
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-101469OAI: oai:DiVA.org:kth-101469DiVA: diva2:548203
Richard J. Fruehan Symposium: Physical Chemistry of Sustainable Metals
QC 201209172012-08-302012-08-292012-09-17Bibliographically approved