Premium
The Effect of CaF 2 in the Slag in Ladle Refining
Author(s) -
Andersson Emma,
Sichen Du
Publication year - 2009
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.2374/sri09sp017
Subject(s) - ladle , slag (welding) , refining (metallurgy) , metallurgy , materials science , component (thermodynamics) , thermodynamics , physics
Industrial experiments were conducted in ladle treatment at SSAB Oxelösund aiming at a reduction and even elimination of CaF 2 as a component in synthetic slag formers. The effects of the presence of CaF 2 on sulphur refining, lining wear as well as types and amount of inclusions were examined. The results of the plant trials indicated that the new slag without CaF 2 had enough capacity for sulphur removal. On the other hand, the presence of CaF 2 as a flux in the slag resulted in profound lining wear. It was also found that both the number and the types of non‐metallic inclusions were not affected by the elimination of CaF 2 from synthetic slag. The origins of different types of inclusions were also analysed on the basis of the experimental results. The analysis supported the finding that the presence of CaF 2 had little effect on inclusions.