Thermodynamic properties of lead oxide in a mixture of stainless steelmaking and nonferrous smelting slags

Nobuhiro Maruoka, Shigeru Ueda, Hiroyuki Shibata, Katsunori Yamaguchi, Shin Ya Kitamura

Research output: Contribution to journalArticle

Abstract

In our previous paper, a slag modification process involving the mixing of stainless steelmaking and nonferrous smelting slags was proposed for preventing the disintegration of the stainless steelmaking slag. In order to use this method, the behavior of heavy metals especially PbO contained in the nonferrous slag has to be assessed. In the present study, the activity coefficient of PbO in CaOSiO 2- Fe tO-Al 2O 3-MgO and CaO-SiO 2-Fe tO slags saturated with iron was measured at 1673 K. The results showed that the activity coefficient of PbO increased with basicity and had a maximum value when the basicity was approximately 1.0. The equilibrium PbO content in the modified slag had a minimum value that corresponded to a mixing ratio of 0.6. The trend was similar to the change in the removal ratio of PbO observed in the previous study. Therefore, the change in the oxygen potential and the change in the activity coefficient of PbO can be considered the cause of this trend.

Original languageEnglish
Pages (from-to)273-279
Number of pages7
JournalHigh Temperature Materials and Processes
Volume31
Issue number3
DOIs
Publication statusPublished - 2012 Jun
Externally publishedYes

Fingerprint

Lead oxide
lead oxides
smelting
slags
Steelmaking
Smelting
Slags
Thermodynamic properties
thermodynamic properties
Activity coefficients
Alkalinity
coefficients
trends
Disintegration
disintegration
heavy metals
mixing ratios
Heavy Metals
Heavy metals
lead oxide

Keywords

  • Activity coefficient
  • Nonferrous smelting slag
  • PbO
  • Stainless steelmaking slag

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Mechanics of Materials

Cite this

Thermodynamic properties of lead oxide in a mixture of stainless steelmaking and nonferrous smelting slags. / Maruoka, Nobuhiro; Ueda, Shigeru; Shibata, Hiroyuki; Yamaguchi, Katsunori; Kitamura, Shin Ya.

In: High Temperature Materials and Processes, Vol. 31, No. 3, 06.2012, p. 273-279.

Research output: Contribution to journalArticle

Maruoka, Nobuhiro ; Ueda, Shigeru ; Shibata, Hiroyuki ; Yamaguchi, Katsunori ; Kitamura, Shin Ya. / Thermodynamic properties of lead oxide in a mixture of stainless steelmaking and nonferrous smelting slags. In: High Temperature Materials and Processes. 2012 ; Vol. 31, No. 3. pp. 273-279.
@article{e0475a8cf8c04b0e9a77436c273f868b,
title = "Thermodynamic properties of lead oxide in a mixture of stainless steelmaking and nonferrous smelting slags",
abstract = "In our previous paper, a slag modification process involving the mixing of stainless steelmaking and nonferrous smelting slags was proposed for preventing the disintegration of the stainless steelmaking slag. In order to use this method, the behavior of heavy metals especially PbO contained in the nonferrous slag has to be assessed. In the present study, the activity coefficient of PbO in CaOSiO 2- Fe tO-Al 2O 3-MgO and CaO-SiO 2-Fe tO slags saturated with iron was measured at 1673 K. The results showed that the activity coefficient of PbO increased with basicity and had a maximum value when the basicity was approximately 1.0. The equilibrium PbO content in the modified slag had a minimum value that corresponded to a mixing ratio of 0.6. The trend was similar to the change in the removal ratio of PbO observed in the previous study. Therefore, the change in the oxygen potential and the change in the activity coefficient of PbO can be considered the cause of this trend.",
keywords = "Activity coefficient, Nonferrous smelting slag, PbO, Stainless steelmaking slag",
author = "Nobuhiro Maruoka and Shigeru Ueda and Hiroyuki Shibata and Katsunori Yamaguchi and Kitamura, {Shin Ya}",
year = "2012",
month = "6",
doi = "10.1515/htmp-2011-0139",
language = "English",
volume = "31",
pages = "273--279",
journal = "High Temperature Materials and Processes",
issn = "0334-6455",
publisher = "Walter de Gruyter GmbH",
number = "3",

}

TY - JOUR

T1 - Thermodynamic properties of lead oxide in a mixture of stainless steelmaking and nonferrous smelting slags

AU - Maruoka, Nobuhiro

AU - Ueda, Shigeru

AU - Shibata, Hiroyuki

AU - Yamaguchi, Katsunori

AU - Kitamura, Shin Ya

PY - 2012/6

Y1 - 2012/6

N2 - In our previous paper, a slag modification process involving the mixing of stainless steelmaking and nonferrous smelting slags was proposed for preventing the disintegration of the stainless steelmaking slag. In order to use this method, the behavior of heavy metals especially PbO contained in the nonferrous slag has to be assessed. In the present study, the activity coefficient of PbO in CaOSiO 2- Fe tO-Al 2O 3-MgO and CaO-SiO 2-Fe tO slags saturated with iron was measured at 1673 K. The results showed that the activity coefficient of PbO increased with basicity and had a maximum value when the basicity was approximately 1.0. The equilibrium PbO content in the modified slag had a minimum value that corresponded to a mixing ratio of 0.6. The trend was similar to the change in the removal ratio of PbO observed in the previous study. Therefore, the change in the oxygen potential and the change in the activity coefficient of PbO can be considered the cause of this trend.

AB - In our previous paper, a slag modification process involving the mixing of stainless steelmaking and nonferrous smelting slags was proposed for preventing the disintegration of the stainless steelmaking slag. In order to use this method, the behavior of heavy metals especially PbO contained in the nonferrous slag has to be assessed. In the present study, the activity coefficient of PbO in CaOSiO 2- Fe tO-Al 2O 3-MgO and CaO-SiO 2-Fe tO slags saturated with iron was measured at 1673 K. The results showed that the activity coefficient of PbO increased with basicity and had a maximum value when the basicity was approximately 1.0. The equilibrium PbO content in the modified slag had a minimum value that corresponded to a mixing ratio of 0.6. The trend was similar to the change in the removal ratio of PbO observed in the previous study. Therefore, the change in the oxygen potential and the change in the activity coefficient of PbO can be considered the cause of this trend.

KW - Activity coefficient

KW - Nonferrous smelting slag

KW - PbO

KW - Stainless steelmaking slag

UR - http://www.scopus.com/inward/record.url?scp=84866622302&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84866622302&partnerID=8YFLogxK

U2 - 10.1515/htmp-2011-0139

DO - 10.1515/htmp-2011-0139

M3 - Article

AN - SCOPUS:84866622302

VL - 31

SP - 273

EP - 279

JO - High Temperature Materials and Processes

JF - High Temperature Materials and Processes

SN - 0334-6455

IS - 3

ER -