Physical and numerical modelling of a four-strand steelmaking tundish using flow analysis of different configurations

Cloete, Jan Hendrik; Akdogan, G.; Bradshaw, S.M.; Chibwe, D.

doi:10.17159/2411-9717/2015/v115n5a3

Cited by 17 publications

(11 citation statements)

References 17 publications

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“…In a previous investigation done by the author, a similar object was tested with similar initial and boundary conditions, and the results were validated with industrial and water model experiments. Similar mesh size was also proven to be enough for grid independence by other authors [29]. CFD simulations of liquid steel flow through the tundish were carried out with the use of ANSYS Fluent commercial code ver.…”

Section: Numerical Simulations Of Steel Flow In the Tundishmentioning

confidence: 99%

Investigations of Liquid Steel Viscosity and Its Impact as the Initial Parameter on Modeling of the Steel Flow through the Tundish

Ślęzak

Warzecha

2020

Materials

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The paper presents research carried out to experimentally determine the dynamic viscosity of selected iron solutions. A high temperature rheometer with an air bearing was used for the tests, and ANSYS Fluent commercial software was used for numerical simulations. The experimental results obtained are, on average, lower by half than the values of the dynamic viscosity coefficient of liquid steel adopted during fluid flow modeling. Numerical simulations were carried out, taking into account the viscosity standard adopted for most numerical calculations and the average value of the obtained experimental dynamic viscosity of the analyzed iron solutions. Both qualitative and quantitative analysis showed differences in the flow structure of liquid steel in the tundish, in particular in the predicted values and the velocity profile distribution. However, these differences are not significant. In addition, the work analyzed two different rheological models—including one of our own—to describe the dynamic viscosity of liquid steel, so that in the future, the experimental stage could be replaced by calculating the value of the dynamic viscosity coefficient of liquid steel using one equation. The results obtained support the use of the author’s rheological model for the above; however, this model still needs to be refined and extended to a wide range of alloying elements, mainly the extension of the carbon range.

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Section: Numerical Simulations Of Steel Flow In the Tundishmentioning

confidence: 99%

Investigations of Liquid Steel Viscosity and Its Impact as the Initial Parameter on Modeling of the Steel Flow through the Tundish

Ślęzak

Warzecha

2020

Materials

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“…RIP Process for Recovery of Uranium [2,4,31] Uranium was the first metal for which the RIP process was commercialized, in the 1950s. Interestingly, since the very beginning, in nearly all constructed uranium RIP processes, quaternary amine strong basic ion exchangers have been employed.…”

Section: Application Of the Modelmentioning

confidence: 99%

“…A dsorption in stirred tank reactors (CSTR) in the form of resin in pulp (RIP) or carbon-in-pulp (CIP) is an economically attractive process for recovery of uranium, [1][2][3][4] gold, [5,6] and base metals (e.g. Cu and Ni), [7][8][9][10][11] from their low grade ores.…”

Section: Introductionmentioning

confidence: 99%

Analytical and semi‐analytical kinetics models for design and optimization of double‐resistance resin in pulp and carbon in pulp processes with both reversible and irreversible nature

et al. 2018

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The current study was aimed at developing a package of “model + algorithm” for the design of resin in pulp (RIP) and carbon in pulp (CIP) processes of gold, uranium, and base metals. For this purpose, we first formulated a double‐resistance model for irreversible adsorption (accompanied by chemical reaction) in CSTRs, and modified the McKay et al. semi‐analytical model for reversible uptake in a similar system. We then devised two algorithms for the design and optimization of reversible and irreversible RIP and CIP cascades. The developed algorithms were applied on the extraction of copper, uranium, and gold. The packages are able to specify the optimum number of stages, reactor volume (V), resin flow rate (m.), and resin hold up (φs). This shows an evident advantage over the McCabe‐Thiele method, whose only result is the number of stages. The new methods have only two adjustable parameters of diffusivity (Deff) and liquid film coefficient (k), whose determination can be carried out through simple batch experiments. As an additional work, this study also presents a method for mathematical troubleshooting for the Mc Kay et al. model.

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“…While as standard, tundishes are furnished with flow control devices (FCD), NMI flotation intensifying or chemical and thermal homogenization enhancing devices. Classic flow control devices include dams, weirs, subflux turbulence controllers (STC), or argon curtains [3][4][5][6][7][8][9][10][11][12][13][14]. Often, tundishes are equipped with ceramic filters, or special chambers to induce rotary motion [15,16].…”

Section: Introductionmentioning

confidence: 99%

Influence of Subflux Turbulence Controller and Ladle Shroud Asymmetric Using on Hydrodynamic Conditions in One Strand Slab Tundish

Cwudziński

2019

Metals

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The tundish plays a key role in the process of continuous steel casting (CSC), as it ensures a stable flow of steel to the mould. Therefore, particular attention is paid to the behavior of liquid steel in the tundish. A wedge-shape tundish with a nominal capacity of 30 tons was tested. The present study has examined different variants of subflux turbulence controller (STC) and ladle shroud (LS) positions relative to one another. For the designed continuous casting variants with the modified tundish pouring zones, numerical simulations of liquid steel behavior were performed. From the computer simulations results, motion, velocity magnitude, and temperature of liquid steel were obtained. Moreover the shares of stagnant volume flow, dispersed plug flow, well-mixed volume flow and transient zone were calculated. It is possible to effectively modify the hydrodynamic conditions by appropriate selection the position of the STC and LS.

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Physical and numerical modelling of a four-strand steelmaking tundish using flow analysis of different configurations

Cited by 17 publications

References 17 publications

Investigations of Liquid Steel Viscosity and Its Impact as the Initial Parameter on Modeling of the Steel Flow through the Tundish

Investigations of Liquid Steel Viscosity and Its Impact as the Initial Parameter on Modeling of the Steel Flow through the Tundish

Analytical and semi‐analytical kinetics models for design and optimization of double‐resistance resin in pulp and carbon in pulp processes with both reversible and irreversible nature

Influence of Subflux Turbulence Controller and Ladle Shroud Asymmetric Using on Hydrodynamic Conditions in One Strand Slab Tundish

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