Detail publikace

A Numerical Investigation on the Electrochemical Behavior of CaO and Al2O3 in the ESR Slags

KARIMI-SIBAKI, E. KHARICHA, A. WU, M. LUDWIG, A. BOHÁČEK, J.

Originální název

A Numerical Investigation on the Electrochemical Behavior of CaO and Al2O3 in the ESR Slags

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Field structures including electromagnetic, concentration of ions, and flow fields in an ESR-like process composed of a graphite crucible containing a molten slag, air, and an iron electrode are computed. Both CaF2-(mass pct 2) CaO and CaF2-(mass pct 2) Al2O3 slags are examined. Tertiary current distribution is calculated. Therefore, polarization overpotential and Faradic reactions at metal-slag interface are considered using Tafel law, whereas transport of ions in the bulk of slag is determined through Nernst-Planck equations. The main goal is to shed light on the invisible phenomena such as magnetohydrodynamics caused by transport of ions, electrical conductivity of CaF2-based slag using additives (e.g., CaO or Al2O3), and the role of complexation of ions (e.g., AlO33-) in the molten slag applied to the ESR. An explanation is given for the observation of higher oxygen content in the metal using Al2O3 than that using equivalent amount of CaO in the CaF2-based slag of a DC-operated ESR.

Klíčová slova

Additives;Alumina;Aluminum oxide;Calcium fluoride;Electrodes;Fluorspar;Ions;Magnetohydrodynamics;Current distribution;Electrical conductivity;Electrochemical behaviors;Field structures;Graphite crucibles;Iron electrodes;Numerical investigations;Planck equation

Autoři

KARIMI-SIBAKI, E.; KHARICHA, A.; WU, M.; LUDWIG, A.; BOHÁČEK, J.

Vydáno

1. 6. 2020

Nakladatel

Springer Nature

Místo

NEW YORK

ISSN

1073-5615

Periodikum

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE

Ročník

51

Číslo

3

Stát

Spojené státy americké

Strany od

871

Strany do

879

Strany počet

9

URL

https://link.springer.com/article/10.1007%2Fs11663-020-01795-y

Plný text v Digitální knihovně

http://hdl.handle.net/11012/194824

BibTex

@article{BUT164735,
  author="Ebrahim {Karimi-Sibaki} and Abdellah {Kharicha} and Menghuai {Wu} and Andreas {Ludwig} and Jan {Boháček}",
  title="A Numerical Investigation on the Electrochemical Behavior of CaO and Al2O3 in the ESR Slags",
  journal="METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE",
  year="2020",
  volume="51",
  number="3",
  pages="871--879",
  doi="10.1007/s11663-020-01795-y",
  issn="1073-5615",
  url="https://link.springer.com/article/10.1007%2Fs11663-020-01795-y"
}