ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Mixing Time in a Cylindrical Bath Agitated by Gas Injection through an L-shaped Top Lance in the Absence of Swirl Motion
Norifumi KochiKoji MoriYasushi SasakiManabu Iguchi
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JOURNAL FREE ACCESS

2011 Volume 51 Issue 11 Pages 1755-1761

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Abstract

Experimental investigations are carried out on mixing time in a water bath agitated by side gas injection with an L-shaped lance. The mixing time is measured using an electrical conductivity sensor and an aqueous KCl solution as a tracer. Particular attention is paid to bath agitation under the conditions that any kinds of swirl motions of a bubbling jet do not appear. An empirical equation is proposed for the mixing time as a function of the gas flow rate, bath diameter, bath depth, and the physical properties of water by referring to a previously proposed empirical equation for mixing time in a bath agitated by J-shaped top lance gas injection. The equation is compared with an empirical equation proposed for a bath in the presence of a swirl motion of the deep-water wave type.

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© 2011 by The Iron and Steel Institute of Japan
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