Optimization of Combined Blown Converter Process
2014 (English)In: ISIJ International, ISSN 0915-1559, E-ISSN 1347-5460, Vol. 54, no 10, 2255-2262 p.Article in journal (Refereed) Published
A 1/6th scaled down physical model was used to study and optimize the stirring condition of a 30 t converter. A number of parameters were studied and their effects on the mixing time were recorded. A new bottom tuyere scheme with an asymmetrical configuration was found to be one of the best cases with respect to a decreased mixing time in the bath. Mathematical modeling was employed to study the flow field characteristics caused by the new tuyere scheme. In the mathematical model, a comparison between the existing and the new tuyere setups was made with regards to the mixing time and turbulence in the bath. In addition, a new volumetric method for calculating the mixing time was applied. The results showed that, on average, a 23.1% longer mixing time resulted from the volumetric method compared to the standard method where discrete point are used to track the mixing time. Furthermore, an industrial investigation was performed to check the effects of the new tuyere scheme in a converter by analyzing the [O], [C] and [P] contents in the bath. The results showed that the application effects of the new tuyere scheme yield a better stirring condition in the bath compared to the original case.
Place, publisher, year, edition, pages
2014. Vol. 54, no 10, 2255-2262 p.
Combined blown, Converter, Industrial experiment, Mixing time, Optimized scheme
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-150640DOI: 10.2355/isijinternational.54.2255ISI: 000343741200016ScopusID: 2-s2.0-84908473652OAI: oai:DiVA.org:kth-150640DiVA: diva2:744335
QC 20141121. Updated from manuscript to article in journal. Previous title: "Optimization of the Combined Blown Converter Process".2014-09-082014-09-082015-10-15Bibliographically approved