Community Research and Development Information Service - CORDIS


Development of techniques to minimise ladle/slag interaction and prevent uncontrolled inclusion modification

Funded under: FP5-GROWTH


The main goals of this collaborative multinational project involving BSC (UK), IRSID (France) and CRDM (France) are:3

a) To identify detailed mechanisms of mass transfer from refractory lining of ladles towards steel in the two situations:
-Carbon pick-up by ultra-low carbon steels from C-bearing refractories at slag line.
-Contamination of metal by glazed ladle lining from previous casts.

b) To improve process practices in ladle that minimise both aspects.
c) To contribute to casting higher quality steels by better control of steel inclusion
populations and of steel composition (carbon in ultra-low carbon steel) at ladle stage of the elaboration.

The main results are the following:
-C pick-up by ULC steel occurs after vacuum treatment and is mainly controlled slag wear. Improvements should be done on the process before seeing a real decrease in C pick-up when using low-C developed MgO-C bricks.

-Fluid flow dynamics model associated with thermo-chemical can predict velocities,
temperature, element distribution and inclusion compositions in steel and the composition of glaze at ladle walls. Pilot plant trials showed that liquid steel/glaze reactions predominate in glaze formation and heat transfer is a major mechanism in the removal of ladle glaze from refractory walls. actory walls.

Additional information

Authors: SOULARD H, IRSID, Maizieres-Ies-Metz (FR);KAERLE M.C, IRSID, Maizieres-Ies-Metz (FR);BOHER M, IRSID, Maizieres-Ies-Metz (FR);HASSALL G, British Steel, Middlesbrough (UK);BAIN K.G, British Steel, Middlesbrough (UK);JONES N, British Steel, Middlesbrough (UK);BLUMENFELD P, Sollac/CRDM, Dunkerque (FR)
Bibliographic Reference: EUR 19485 EN (2001), pp.91. Euro: 14.50
Availability: Available by EUR-OP sales agent
ISBN: ISBN: 92-894-1225-9
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