Thermodynamic study for P reduction from slag to molten steel by using the microwave heating

Joonho Lee, Eunju Kim, Taeyoung Kim, Youn Bae Kang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Phosphorus exhibits considerable segregation in steelmaking slag. In order to recover phosphorus from slag to K3PO4 via molten iron, a carbothermic reaction using microwave heating was suggested recently. The carbothermic reduction of phosphorus from slag to molten iron using microwave heating was carried out at 2073K. However, at this temperature the thermodynamic properties of both slag and molten iron cannot be determined experimentally. Therefore, the computational approach of the so-called CALPHAD method is very useful to understand the transfer of phosphorus from slag to metal and to enhance this reaction. In the present investigation, a theoretical study of the reduction behavior of phosphorus in slag was carried out at much lower temperatures using the recently developed thermodynamic database in the FactSage program. The calculated results showed reasonable accordance with the experimental data; namely, the thermodynamic database could be applied successfully to higher temperature reactions. The current study found that higher temperature and high SiO2 concentration are favorable for the recovery of phosphorus from slag.

Original languageEnglish
Pages (from-to)42-46
Number of pages5
JournalKorean Journal of Materials Research
Volume20
Issue number1
DOIs
Publication statusPublished - 2010 Jan 1

Fingerprint

Microwave heating
Steel
Slags
Molten materials
Phosphorus
Thermodynamics
Iron
Carbothermal reduction
Temperature
Steelmaking
Thermodynamic properties
Metals
Recovery

Keywords

  • Carbothermic reduction
  • Microwave
  • P recovery
  • Slag
  • Thermodynamic

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Thermodynamic study for P reduction from slag to molten steel by using the microwave heating. / Lee, Joonho; Kim, Eunju; Kim, Taeyoung; Kang, Youn Bae.

In: Korean Journal of Materials Research, Vol. 20, No. 1, 01.01.2010, p. 42-46.

Research output: Contribution to journalArticle

@article{6947c970d8314ad69f0ced2b740291de,
title = "Thermodynamic study for P reduction from slag to molten steel by using the microwave heating",
abstract = "Phosphorus exhibits considerable segregation in steelmaking slag. In order to recover phosphorus from slag to K3PO4 via molten iron, a carbothermic reaction using microwave heating was suggested recently. The carbothermic reduction of phosphorus from slag to molten iron using microwave heating was carried out at 2073K. However, at this temperature the thermodynamic properties of both slag and molten iron cannot be determined experimentally. Therefore, the computational approach of the so-called CALPHAD method is very useful to understand the transfer of phosphorus from slag to metal and to enhance this reaction. In the present investigation, a theoretical study of the reduction behavior of phosphorus in slag was carried out at much lower temperatures using the recently developed thermodynamic database in the FactSage program. The calculated results showed reasonable accordance with the experimental data; namely, the thermodynamic database could be applied successfully to higher temperature reactions. The current study found that higher temperature and high SiO2 concentration are favorable for the recovery of phosphorus from slag.",
keywords = "Carbothermic reduction, Microwave, P recovery, Slag, Thermodynamic",
author = "Joonho Lee and Eunju Kim and Taeyoung Kim and Kang, {Youn Bae}",
year = "2010",
month = "1",
day = "1",
doi = "10.3740/MRSK.2010.20.1.042",
language = "English",
volume = "20",
pages = "42--46",
journal = "Korean Journal of Materials Research",
issn = "1225-0562",
publisher = "The Korea Federation of Science and Technology",
number = "1",

}

TY - JOUR

T1 - Thermodynamic study for P reduction from slag to molten steel by using the microwave heating

AU - Lee, Joonho

AU - Kim, Eunju

AU - Kim, Taeyoung

AU - Kang, Youn Bae

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Phosphorus exhibits considerable segregation in steelmaking slag. In order to recover phosphorus from slag to K3PO4 via molten iron, a carbothermic reaction using microwave heating was suggested recently. The carbothermic reduction of phosphorus from slag to molten iron using microwave heating was carried out at 2073K. However, at this temperature the thermodynamic properties of both slag and molten iron cannot be determined experimentally. Therefore, the computational approach of the so-called CALPHAD method is very useful to understand the transfer of phosphorus from slag to metal and to enhance this reaction. In the present investigation, a theoretical study of the reduction behavior of phosphorus in slag was carried out at much lower temperatures using the recently developed thermodynamic database in the FactSage program. The calculated results showed reasonable accordance with the experimental data; namely, the thermodynamic database could be applied successfully to higher temperature reactions. The current study found that higher temperature and high SiO2 concentration are favorable for the recovery of phosphorus from slag.

AB - Phosphorus exhibits considerable segregation in steelmaking slag. In order to recover phosphorus from slag to K3PO4 via molten iron, a carbothermic reaction using microwave heating was suggested recently. The carbothermic reduction of phosphorus from slag to molten iron using microwave heating was carried out at 2073K. However, at this temperature the thermodynamic properties of both slag and molten iron cannot be determined experimentally. Therefore, the computational approach of the so-called CALPHAD method is very useful to understand the transfer of phosphorus from slag to metal and to enhance this reaction. In the present investigation, a theoretical study of the reduction behavior of phosphorus in slag was carried out at much lower temperatures using the recently developed thermodynamic database in the FactSage program. The calculated results showed reasonable accordance with the experimental data; namely, the thermodynamic database could be applied successfully to higher temperature reactions. The current study found that higher temperature and high SiO2 concentration are favorable for the recovery of phosphorus from slag.

KW - Carbothermic reduction

KW - Microwave

KW - P recovery

KW - Slag

KW - Thermodynamic

UR - http://www.scopus.com/inward/record.url?scp=77957158295&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77957158295&partnerID=8YFLogxK

U2 - 10.3740/MRSK.2010.20.1.042

DO - 10.3740/MRSK.2010.20.1.042

M3 - Article

VL - 20

SP - 42

EP - 46

JO - Korean Journal of Materials Research

JF - Korean Journal of Materials Research

SN - 1225-0562

IS - 1

ER -