Flow and Heat Transfer Performance of Slag and Matte in the Settler of a Copper Flash Smelting Furnace

Xia, Jiliang; Ahokainen, T.; Kankaanpää, T.; Järvi, J.; Taskinen, Pekka

doi:10.1002/srin.200705873

Cited by 11 publications

(27 citation statements)

References 8 publications

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“…The current investigation continued by adding the coalescence of droplets. Furthermore, instead of mono-sized droplets at the inlet, a mixture of different-sized droplets as reported in literature [33] were used for the inlet conditions, and the results from the full-scale settler were consistent with those reported earlier [6,7,10].…”

Section: Discussionsupporting

confidence: 80%

“…As expected, large droplets settled quickly and droplets of 500 µm and above mostly settled within 90 s. However, small droplets below 500 µm were still settling after 90 s, especially the 100 µm and 50 µm droplets, which were mostly dispersed inside the slag. Additionally, the formation of a vortex under the inlet and chaotic flows due to opposing currents of matte droplets trying to settle [7], and the lighter slag phase moving upwards were likewise observed in this work. Nonetheless, the coalescence rate of large droplets was relatively low, as indicated by the low volume fraction of 900 µm and 1300 µm sized droplets.…”

Section: Discussionsupporting

confidence: 71%

“…In the literature, [5,7] research regarding matte droplets settling through the slag phase was conducted at steady state using the Eulerian-Eulerian approach. In addition, the Eulerian-Lagrangian approach has been used to study the paths of individual droplets during settling and the effect of the slag tapping position and velocity on settling [6].…”

Section: Discussionmentioning

confidence: 99%

“…More material constantly descends from the reaction shaft and matte droplets settle through the slag layer, creating flows in the matte and slag layers. Xia et al studied the slag and matte flows in a FS settler [5][6][7]. They found that tapping of the slag and the matte creates complex turbulent flows in the settler.…”

Section: Introductionmentioning

confidence: 99%

“…Processes 2020, 8, x FOR PEER REVIEW 2 of 18 the matte and slag layers. Xia et al studied the slag and matte flows in a FS settler [5][6][7]. They found that tapping of the slag and the matte creates complex turbulent flows in the settler.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Computational Approaches for Studying Slag–Matte Interactions in the Flash Smelting Furnace (FSF) Settler

2020

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Computational methods have become reliable tools in many disciplines for research and industrial design. There are, however, an ever-increasing number of details waiting to be included in the models and software, including, e.g., chemical reactions and many physical phenomena, such as particle and droplet behavior and their interactions. The dominant method for copper production, flash smelting, has been extensively investigated, but the settler part of the furnace containing molten high temperature melts termed slag and matte, still lacks a computational modeling tool. In this paper, two commercial modeling software programs have been used for simulating slag-matte interactions in the settler, the target being first to develop a robust computational fluid dynamics (CFD) model and, second, to apply a new approach for molten droplet behavior in a continuum. The latter is based on CFD coupled with the discrete element method (DEM), which was originally developed for modeling solid particle-particle interactions and movement, and is applied here for individual droplets for the first time. The results suggest distinct settling flow phenomena and the significance of droplet coalescence for settling velocity and efficiency. The computing capacity requirement for both approaches is the main limiting factor preventing full-scale geometry modeling with detailed droplet interactions.

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Section: Discussionsupporting

confidence: 80%

Section: Discussionsupporting

confidence: 71%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Computational Approaches for Studying Slag–Matte Interactions in the Flash Smelting Furnace (FSF) Settler

2020

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Dynamic Modelling of Molten Slag-Matte Interactions in an Industrial Flash Smelting Furnace Settler

Khan

Jokilaakso

2018

The Minerals, Metals &Amp; Materials Series

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Depleting copper resources and advancing technologies have challenged industries to develop more viable, adaptable and cost efficient processes using also secondary raw materials in copper production. This study is targeting to that goal by dynamic modelling of flow and heat transfer coupled with chemical kinetics in an industrial scale flash smelting furnace settler using commercial CFD software ANSYS Fluent. First, different physical phenomena occurring inside the settler, for example, settling and separation of the matte/slag phases, and heat transfer between slag/matte phases and settler walls are studied. Secondly, reaction kinetics between matte and slag, and between slag/matte and settler walls, and impurity element distribution will be studied. This would also include phase changes phenomena due to these reactions and the flow of the reaction gases inside the settler. Settling of polydispersed droplets, their coagulation, breakage, and WEEE particle behavior are further targets of the modelling work.

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Transient CFD Modeling of Matte Settling Behavior and Coalescence in an Industrial Copper Flash Smelting Furnace Settler

Schmidt

Montenegro

Wehinger

2020

Metall Mater Trans B

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Flow and Heat Transfer Performance of Slag and Matte in the Settler of a Copper Flash Smelting Furnace

Cited by 11 publications

References 8 publications

Computational Approaches for Studying Slag–Matte Interactions in the Flash Smelting Furnace (FSF) Settler

Computational Approaches for Studying Slag–Matte Interactions in the Flash Smelting Furnace (FSF) Settler

Dynamic Modelling of Molten Slag-Matte Interactions in an Industrial Flash Smelting Furnace Settler

Transient CFD Modeling of Matte Settling Behavior and Coalescence in an Industrial Copper Flash Smelting Furnace Settler

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