Thermodynamic Study on MnO Behavior in MgO-saturated Slag Containing FeO

Sung Mo Jung, Seon Hyo Kim, Chang Hee Rhee, Dong Joon Min

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In order to understand the behavior of manganese oxide in smelting reduction process, the manganese equilibrium between ironmaking slag containing FeO and silver melt was investigated over the temperature range of 1 400-1 500°C. The oxygen partial pressure was controlled by CO/CO2 ratio. Test results on Mn content in silver have been thermodynamically converted into those in supercooled or carbon-saturated iron melts and the activity coefficient of MnO in slag was determined experimentally. The activity of MnO decreased with increasing FeO content in slag. Higher FeO content as well as lower slag basicity resulted in larger equilibrium manganese distribution ratio between slag and iron. The temperature dependence of equilibrium manganese distribution was determined in the temperature range of 1400-1500°C. The relative partial molar heats of solution of MnO and Mn were also experimentally determined.

Original languageEnglish
Pages (from-to)1049-1054
Number of pages6
JournalISIJ International
Volume33
Issue number10
DOIs
Publication statusPublished - 1993 Jan 1

Fingerprint

Slags
Thermodynamics
Manganese
Silver
Iron
Manganese oxide
Activity coefficients
Smelting
Carbon Monoxide
Alkalinity
Partial pressure
Temperature
Carbon
Oxygen

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Jung, Sung Mo ; Kim, Seon Hyo ; Rhee, Chang Hee ; Min, Dong Joon. / Thermodynamic Study on MnO Behavior in MgO-saturated Slag Containing FeO. In: ISIJ International. 1993 ; Vol. 33, No. 10. pp. 1049-1054.
@article{67774fea03fe415486749117388aea4a,
title = "Thermodynamic Study on MnO Behavior in MgO-saturated Slag Containing FeO",
abstract = "In order to understand the behavior of manganese oxide in smelting reduction process, the manganese equilibrium between ironmaking slag containing FeO and silver melt was investigated over the temperature range of 1 400-1 500°C. The oxygen partial pressure was controlled by CO/CO2 ratio. Test results on Mn content in silver have been thermodynamically converted into those in supercooled or carbon-saturated iron melts and the activity coefficient of MnO in slag was determined experimentally. The activity of MnO decreased with increasing FeO content in slag. Higher FeO content as well as lower slag basicity resulted in larger equilibrium manganese distribution ratio between slag and iron. The temperature dependence of equilibrium manganese distribution was determined in the temperature range of 1400-1500°C. The relative partial molar heats of solution of MnO and Mn were also experimentally determined.",
author = "Jung, {Sung Mo} and Kim, {Seon Hyo} and Rhee, {Chang Hee} and Min, {Dong Joon}",
year = "1993",
month = "1",
day = "1",
doi = "10.2355/isijinternational.33.1049",
language = "English",
volume = "33",
pages = "1049--1054",
journal = "ISIJ International",
issn = "0915-1559",
publisher = "Iron and Steel Institute of Japan",
number = "10",

}

Thermodynamic Study on MnO Behavior in MgO-saturated Slag Containing FeO. / Jung, Sung Mo; Kim, Seon Hyo; Rhee, Chang Hee; Min, Dong Joon.

In: ISIJ International, Vol. 33, No. 10, 01.01.1993, p. 1049-1054.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Thermodynamic Study on MnO Behavior in MgO-saturated Slag Containing FeO

AU - Jung, Sung Mo

AU - Kim, Seon Hyo

AU - Rhee, Chang Hee

AU - Min, Dong Joon

PY - 1993/1/1

Y1 - 1993/1/1

N2 - In order to understand the behavior of manganese oxide in smelting reduction process, the manganese equilibrium between ironmaking slag containing FeO and silver melt was investigated over the temperature range of 1 400-1 500°C. The oxygen partial pressure was controlled by CO/CO2 ratio. Test results on Mn content in silver have been thermodynamically converted into those in supercooled or carbon-saturated iron melts and the activity coefficient of MnO in slag was determined experimentally. The activity of MnO decreased with increasing FeO content in slag. Higher FeO content as well as lower slag basicity resulted in larger equilibrium manganese distribution ratio between slag and iron. The temperature dependence of equilibrium manganese distribution was determined in the temperature range of 1400-1500°C. The relative partial molar heats of solution of MnO and Mn were also experimentally determined.

AB - In order to understand the behavior of manganese oxide in smelting reduction process, the manganese equilibrium between ironmaking slag containing FeO and silver melt was investigated over the temperature range of 1 400-1 500°C. The oxygen partial pressure was controlled by CO/CO2 ratio. Test results on Mn content in silver have been thermodynamically converted into those in supercooled or carbon-saturated iron melts and the activity coefficient of MnO in slag was determined experimentally. The activity of MnO decreased with increasing FeO content in slag. Higher FeO content as well as lower slag basicity resulted in larger equilibrium manganese distribution ratio between slag and iron. The temperature dependence of equilibrium manganese distribution was determined in the temperature range of 1400-1500°C. The relative partial molar heats of solution of MnO and Mn were also experimentally determined.

UR - http://www.scopus.com/inward/record.url?scp=0027803592&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027803592&partnerID=8YFLogxK

U2 - 10.2355/isijinternational.33.1049

DO - 10.2355/isijinternational.33.1049

M3 - Article

AN - SCOPUS:0027803592

VL - 33

SP - 1049

EP - 1054

JO - ISIJ International

JF - ISIJ International

SN - 0915-1559

IS - 10

ER -