Effect of Inert Gas Flow Rate on Homogenization and Inclusion Removal in a Gas Stirred Ladle
2010 (English)In: STEEL RES INT, ISSN 1611-3683, Vol. 81, no 12, 1056-1063 p.Article in journal (Refereed) Published
In the present study, the effect of gas flow rate on homogenization and inclusion removal in a gas stirred ladle was investigated. Both industrial trials and cold model experiments were conducted. CFD calculation was also carried out as an auxiliary tool. The mixing times predicted by CFD simulation agreed well with both the model experiments and industrial data. 99% mixing could be achieved in about 2-3 minutes. The increase of flow rate of inert gas would not improve the mixing substantially, while the mixing time decreased somewhat with the increase of gas flow rate. The water model study showed also that the gas flow rate had a negligible effect on the rate of inclusion removal. Both the experiments and CFD calculation strongly suggested that a low gas flow rate should be applied in the ladle treatment.
Place, publisher, year, edition, pages
2010. Vol. 81, no 12, 1056-1063 p.
MIXING PHENOMENA, NONMETALLIC INCLUSIONS, NUMERICAL-SIMULATION, LIQUID REACTIONS, FLUID-FLOW, OPEN-EYE
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-30250DOI: 10.1002/srin.201000102ISI: 000285896000003ScopusID: 2-s2.0-78649813495OAI: oai:DiVA.org:kth-30250DiVA: diva2:399386
FunderEU, European Research Council
QC 201102222011-02-222011-02-212012-08-29Bibliographically approved