Numerical and Physical Simulations of a Combined Top-Bottom-Side Blown Converter
2015 (English)In: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344X, Vol. 86, no 11, 1328-1338 p.Article in journal (Refereed) Published
In this study, a side tuyere was introduced to investigate how it is possible to lower the mixing time and to avoid problems of a reduced stirring when using the application of slag splashing process in the combined top and bottom blown converter. Both physical and mathematical models were applied to study the flow in the bath. Specifically, the effects of a side-blowing gas jet on the bath stirring intensity was studied. The results indicate that the mixing time for a side blown converter is decreased profoundly compared to a conventional combined top and bottom blown converter. Overall, the mathematical model showed similar trends and a good agreement with that of the physical modeling data. Furthermore, the shear stress at the wall in the top-bottom-side (TBS) converter was considered, since the furnace lining is important when side blowing is used in the converter. It was found that the side wall shear stress is increased by introducing side blowing, especially in the region near the side blowing plume. Three side tuyeres with different locations in the same level did not show any obvious effects on the mixing of the bath, but showed apparent differences in the shear stress and the oscillation of the bath. Overall, the results showed that the mathematical model can be used to design the configuration of the metallurgical vessels when it is necessary to consider the oscillation and the shear stress of the bath.
Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2015. Vol. 86, no 11, 1328-1338 p.
side tuyere, converter, mathematical model, mixing time, shear stress
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-175464DOI: 10.1002/srin.201400376ISI: 000363679600011ScopusID: 2-s2.0-84945469118OAI: oai:DiVA.org:kth-175464DiVA: diva2:861149
QC 201511202015-10-152015-10-152016-02-09Bibliographically approved