Comprehensive numerical assessment of molten iron–slag trickle flow and gas countercurrent in complex coke bed by Eulerian–Lagrangian approach

Shungo Natsui, Kazui Tonya, Azuma Hirai, Hiroshi Nogami

Research output: Contribution to journalArticlepeer-review

Abstract

The transient behavior of immiscible two-liquid interfaces initiated by molten iron–slag trickle flow was investigated using a Lagrangian particle-based smoothed particle hydrodynamics (SPH) model to track the movements of both liquid phases directly. The transient behavior of the associated gas flow was simulated using a Eulerian grid-based model dependent on the gas permeability characteristics exhibited by the molten iron–slag counterflow. As an example of the assessments conducted, the sliding behavior of molten iron down the slag surface at different between-phase interfacial tensions was observed in the unsteady state. While the effect of wetting between the molten slag and coke on the gas flow was found to be insignificant, decreasing the liquid–liquid interfacial tension promoted mixing between the two liquids, which in turn hindered the rapid dropping of the molten iron and resulted in a significant stagnation of gas flow.

Original languageEnglish
Article number128606
JournalChemical Engineering Journal
Volume414
DOIs
Publication statusPublished - 2021 Jun 15

Keywords

  • Coke bed
  • Discrete-element method
  • Eulerian–Lagrangian coupling
  • Ironmaking
  • Particle-based smoothed particle hydrodynamics
  • Trickle flow

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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