Expansion of Injected Gas Bubble and Its Effects on Bath Mixing under Reduced Pressure

The behavior of a single bubble was observed and the complete mixing time was measured under reduced pressure (∼1.33×102Pa (1 Torr)) using a silicon oil model. The bubble expanded greatly and changed from oval to a spherical-cup shape. The complete mixing time tended to be constant independent of th...

Full description

Saved in:
Bibliographic Details
Published inISIJ International Vol. 37; no. 6; pp. 557 - 561
Main Authors Tatsuoka, Teruhisa, Kamata, Chizuna, Ito, Kimihisa
Format Journal Article
LanguageEnglish
Published Tokyo The Iron and Steel Institute of Japan 01.01.1997
Iron and Steel Institute of Japan
Subjects
Applied sciences
complete mixing time
Exact sciences and technology
Iron and steel making
local stirring power
Metals. Metallurgy
optical fiber probe
Oxygen or pneumatic steel making
Production of metals
single bubble
steelmaking
vacuum refining
Bubble
Liquid metal
Iron steel industry
Stirring
Steelmaking
Steel refining
Gas injection
Steelmaking plant
Experimental study
Molten steel
Molten metal treatment
Online AccessGet full text

Cover

More Information
Summary:The behavior of a single bubble was observed and the complete mixing time was measured under reduced pressure (∼1.33×102Pa (1 Torr)) using a silicon oil model. The bubble expanded greatly and changed from oval to a spherical-cup shape. The complete mixing time tended to be constant independent of the stirring power of gas per unit bath volume in the low vessel pressure range (<6.66×102Pa), because most of the expansion energy was dissipated and the mixing occurred near the bath surface; this was confirmed by observation of the flow.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.37.557