Bottom Shape of Blast Furnace Deadman and its Floating/Sinking Behavior by 3-dimensional Model Experiment

Shinotake, Akihiko; Ichida, Morimasa; Ootsuka, Hajime; Kurita, Yasushi

doi:10.2355/tetsutohagane1955.89.5_573

Cited by 11 publications

(13 citation statements)

References 5 publications

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“…1) Some cold experiments with two-and three-dimensional model have been carried out to understand the behavior of solid flow in blast furnace. [2][3][4] However, although these results reflect the behavior of solid flow at macroscopic level, they can not present the unsteady state solid motion and stress distribution. Accordingly, the unstable and discontinuous phenomena at the particle level can not be derived by the above models.…”

Section: Introductionmentioning

confidence: 90%

Transient Behavior of Burden Descending and Influence of Cohesive Zone Shape on Solid Flow and Stress Distribution in Blast Furnace by Discrete Element Method

et al. 2010

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Section: Introductionmentioning

confidence: 90%

Transient Behavior of Burden Descending and Influence of Cohesive Zone Shape on Solid Flow and Stress Distribution in Blast Furnace by Discrete Element Method

et al. 2010

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“…Another possible extension of the model is to consider hysteresis in the dead man motion. 11 In addition, possible taphole wear along with the tapping is known to have an effect on the outflow behaviour. These topics are going to be tackled in forthcoming work, which aims at developing a (still simplified but a somewhat more realistic) hearth model to be used for tapping control of the blast furnace.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Simple simulation model of blast furnace hearth

Brännbacka¹,

Torrkulla²,

Saxén³

2005

Ironmaking & Steelmaking

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A model has been developed to simulate and analyse the overall performance of the blast furnace hearth. The model is based on a set of simplifying assumptions concerning the inflow and outflow rates of iron and slag, and on a hypothesis concerning the general operating principles of liquid drainage. These assumptions have, in earlier studies, proved to be adequate for capturing the overall behaviour of hearths in industrial blast furnaces. The model, which also considers the case where the 'dead man coke' floats in the iron bath, can be used for what-if analysis of how, for example, hearth geometry, sump depth, production rate, slag ratio, and tapping time influence the drainage procedure. A set of simple equations for certain special cases is presented. The model is illustrated by examples of how changes in boundary and internal conditions affect the performance of the hearth.

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“…Depending on the size of the furnace, it has been inferred from observations that the deadman and the burden above can float on the liquid metal in the hearth and can move down during tapping . A methodology has also been suggested to estimate the extent of the deadman movement using load–buoyancy calculation.…”

Section: Solid Flowmentioning

confidence: 99%

“…While flow of gases and simple fluids are described using standard Navier–Stokes equation with models for turbulence, no single equation or a system of equations have become standard for the description of flow of granular materials. There are two approaches: one is to consider the medium to be a continuum, and the other is to consider each particle to be discrete . While treating the materials as continuum, constitutive equations that describe the macroscopic flow behavior are sought to be obtained through experiments performed in simple flow systems using the specific granular material.…”

Section: Solid Flowmentioning

confidence: 99%

Flow Phenomena in the Dripping Zone of Blast Furnace − A Review

Ghosh

Nurni

Ballal

2017

steel research int.

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Dripping zone plays a crucial role in modern high productivity blast furnaces; it affects production rate, hot metal quality, and process efficiency. This is a four phase region, where gas, solid, liquid, and powder coexist with each other. Solid and liquid flow downward driven by gravity, whereas gas and powder suspended in the gas flow upward due to the pressure force. The flow of four phases in this region is considerably different from that in the upper shaft region due to the geometry and the presence of deadman zone at the center and discrete raceways at the periphery. This paper presents the review of the current status of the understanding of this flow phenomena of different phases namely, granular solids, dripping liquids, powder, and gas. Discussion on the fundamental aspects of the flow of each phase are followed by review of the current status of experimental investigations and modeling efforts. Gaps in understanding and challenges ahead for future investigations are suggested.

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Bottom Shape of Blast Furnace Deadman and its Floating/Sinking Behavior by 3-dimensional Model Experiment

Cited by 11 publications

References 5 publications

Transient Behavior of Burden Descending and Influence of Cohesive Zone Shape on Solid Flow and Stress Distribution in Blast Furnace by Discrete Element Method

Transient Behavior of Burden Descending and Influence of Cohesive Zone Shape on Solid Flow and Stress Distribution in Blast Furnace by Discrete Element Method

Simple simulation model of blast furnace hearth

Flow Phenomena in the Dripping Zone of Blast Furnace − A Review

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