Cleanness and uniformity in steel properties are important for high quality steel. Physical and/or mathematical models can be used in order to achieve optimum conditions for the clean steel during steelmaking processes. In the present study, important metallurgical transport phenomena in steelmaking ladles and tundishes have been investigated using both mathematical and physical (water) models. / Through appropriate solutions of the Navier-Stokes equations, the intermixing of fluid within gas-stirred ladles can be modelled quite satisfactorily. It is shown that off-centered bubbling gives the most consistent results in terms of minimising mixing times, since angular velocity components intermix fluid across the width of a ladle. Comparisons between mathematical and experimental data are presented. / Fluid flow, heat transfer and inclusion flotation have been modelled mathematically for testing the behaviour of several tundish designs. Computations are presented to illustrate the importance of thermal natural convection currents in mixing the upper and lower layers of steel. Particle removal rates are also experimentally studied with the aid of the novel E.S.Z. (Electric Sensing Zone) system, and compared with computational results.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.74277 |
| Date | January 1989 |
| Creators | Joo, Sanghoon |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Mining and Metallurgical Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001072542, proquestno: AAINN63467, Theses scanned by UMI/ProQuest. |
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