ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Physical-modeling Study of Fluid Flow and Gas Penetration in a Side-blown AOD Converter
Martin BjurströmAnders TillianderManabu IguchiPär Jönsson
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2006 Volume 46 Issue 4 Pages 523-529

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Abstract

The main fluid-flow pattern that results in a converter with side gas injection was studied using physical modeling. Having roughly the same viscosity as liquid steel, water was used in the experiments. The velocity of the water was determined for different positions in the vessel symmetry plane by laser Doppler velocimetry. Experiments were performed using combinations of three different bath heights and four different gas-flow rates. The results showed penetration of the gas plume into the steel bath both at the tuyère and bath level to increase with an increased gas-flow rate. Also, the penetration depth of the gas both at the tuyère and bath surface level were more affected by an increased gas-flow rate than an increased bath height. Finally, the overall fluid-flow pattern in the system was found to change both with an increased bath height and an increased gas-flow rate.

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© 2006 by The Iron and Steel Institute of Japan
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