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Instability Phenomena at Bath Surface Induced by Top Lance Gas Injection

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Title: Instability Phenomena at Bath Surface Induced by Top Lance Gas Injection
Authors: Kumagai, Takehiko Browse this author →KAKEN DB
Iguchi, Manabu Browse this author
Keywords: Refining process
gas injection
top lance
swirl motion
Froude number
Issue Date: 15-Feb-2001
Publisher: Iron and Steel Institute of Japan
Journal Title: ISIJ International
Volume: 41
Issue: Suppl
Start Page: S52
End Page: S55
Publisher DOI: 10.2355/isijinternational.41.Suppl_S52
Abstract: Top lance gas injection processes are extensively used in metallurgical engineering. When the exit of the top lance is placed near the bath surface, a downward bubbling jet is generated in the bath. The flow patterns of the downward bubbling jet are classified into seven categories mainly with gas flow rate. Instability phenomena of the bubbling jet appear when the gas flow rate is higher than a certain critical value. The phenomena are strongly dependent on the penetration depth of the bubbling jet into the bath, and hence, an empirical relation is proposed for the penetration depth as a function of the gas flow rate, nozzle diameter and vessel diameter.
Rights: 著作権は日本鉄鋼協会にある
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 熊谷 剛彦

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