Characteristics of the Dead Zones in RH Desgasser with Simulation Methods

De Liang Niu; Qing Cai Liu; Dong Ran Ma; Jian Yang; Min Ren Xu; Zhu Wang

doi:10.4028/www.scientific.net/MSF.817.755

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HomeMaterials Science ForumMaterials Science Forum Vol. 817Characteristics of the Dead Zones in RH Desgasser...

Characteristics of the Dead Zones in RH Desgasser with Simulation Methods

Abstract:

A mathematical model has been constructed for simulating the RH degasser of an iron and steel Co. Ltd. The flow field of molten steel in the ladle has been investigated; in addition, it is also investigated through physical modeling study. The main objective of the investigation was to assess the influence of gas flow rate and immersion depth on dead zones in the ladle. The results show that the flow pattern of molten steel in RH degasser can be well represented by the mathematical model and the physical model. Except the areas close to the free surface and the zones between the two snorkels and the sidewall in the ladle, these dead zones can be reduced by increasing of gas flow rate and immersion depth. These dead zones were marked with 1, 2, 3, results calculated by mathematical modeling are in good agreement with which obtained by means of physical modeling (water modelling) study increasing of immersion depth could markedly reduce the area of dead zone 3, yet the area of dead zone 1 and 2 could be markedly reduced by increasing the gas flow rate, hence indicate that mixing of dead zones could be intensified through improving gas flow rate and immersion depth.

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Periodical:

Materials Science Forum (Volume 817)

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755-763

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https://doi.org/10.4028/www.scientific.net/MSF.817.755

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Online since:

April 2015

Authors:

De Liang Niu*, Qing Cai Liu, Dong Ran Ma, Jian Yang, Min Ren Xu, Zhu Wang

Keywords:

Flow Field, Mathematical Modelling, Molten Steel, Physical Modeling, RH Degasser

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