Premium
Investigations on the non‐steady operating behaviour of molten metal in the ladle and its emulsified liquid slag content
Author(s) -
Drögemeier Peter,
Neifer Martin,
Rödl Sigurd
Publication year - 1995
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199501111
Subject(s) - ladle , metallurgy , context (archaeology) , molten metal , liquid metal , slag (welding) , flow (mathematics) , chemistry , materials science , mechanical engineering , thermodynamics , engineering , physics , mechanics , paleontology , biology
The separating behaviour of emulsified slag is greatly influenced by the flow conditions prevailing in the ladle. Especially non‐steady flow conditions characterized by a time‐related decrease in flow velocity (decaying flow condition) play an important role in this context. In order to clarify these phenomena, a number of numerical computations and model trials were performed. The computed and measured results obtained show a high degree of coincidence. Specific process engineering recommendations aimed at an improvement in the separation of emulsified slag droplets are presented. A new equation has been developed to calculate the holding time required for the separation of emulsified slag droplets between the ladle filling and casting steps. The results obtained with this equation coincide accurately with the computed and measured data. In addition, model trials and numerical computations of this type may contribute to a quick and economically efficient solution of similar problems in the design and improvement of other metallurgy and process technology systems.