Numerical Simulations of the Kinetic Energy Transferin the Bath of a BOF Converter
2016 (English)In: Metallurgical and materials transactions. B, process metallurgy and materials processing science, ISSN 1073-5615, E-ISSN 1543-1916, Vol. 47, no 1, 434-445 p.Article in journal (Refereed) Published
The paper focuses on the fundamental aspects of the kinetic energy transfer from a top andbottom gas injection to the bath of the basic oxygen furnace (BOF) by applying a mathematicalmodel. The analyses revealed that the energy transfer is less efficient when top lance height islowered or the flowrate is increased in the top blowing operations. However, an inverse trendwas found that the kinetic energy transfer is increased when the bottom flowrate is increased forthe current bottom blowing operation conditions. The kinetic energy transfer index resultsindicated that the energy transfer for the bottom blowing is much more efficient than that of thetop blowing operations. To understand the effects of the upper buoyant phase on the energydissipation of the bulk liquid in the bath, different mass and physical properties of slag and foamwere considered in the bottom blowing simulations. The slag on top of the bath is found todissipate by 6.6, 9.4, and 11.2 pct for slag mass values of 5, 9, and 15 t compared to the casewithout slag atop the surface of the bath, respectively. The results showed that the kinetic energytransfer is not largely influenced by the viscosity of the upper slag or the foaming phases.
Place, publisher, year, edition, pages
Springer, 2016. Vol. 47, no 1, 434-445 p.
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-175465DOI: 10.1007/s11663-015-0465-0ISI: 000368692300040ScopusID: 2-s2.0-84958160131OAI: oai:DiVA.org:kth-175465DiVA: diva2:861152
QC 201602102015-10-152015-10-152016-02-23Bibliographically approved