Phase equilibria studies in the CaO-SiO2- Al2O3-MgO system with CaO/SiO2 Ratio of 1.10

Xiaodong Ma; Dianwei Zhang; Zhixing Zhao; Tim Evans; Baojun Zhao

doi:10.2355/isijinternational.ISIJINT-2015-486

Phase equilibria studies in the CaO-SiO₂- Al₂O₃-MgO system with CaO/SiO₂ Ratio of 1.10

Xiaodong Ma^*, Dianwei Zhang, Zhixing Zhao, Tim Evans, Baojun Zhao

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Phase equilibria and liquidus temperatures in the CaO-SiO₂-Al₂O₃-MgO system with CaO/SiO2 weight ratio of 1.10 have been experimentally determined by means of high temperature equilibration and quenching technique followed by electron probe X-ray microanalysis. Isotherms in the interval of 20 K between 1 613 and 1 733 K were determined in the primary phase fields of dicalcium silicate, wollastonite, merwinite, periclase, spinel and melilite that are relevant to ironmaking slags. Effects of Al₂O₃, MgO and CaO/SiO₂ ratio on the liquidus temperatures have been discussed to assist optimum operation of iron blast furnace. Compositions of the solid solutions corresponding to the liquidus have been accurately measured that will be used for development of the thermodynamic database.

Original language	English
Pages (from-to)	513-519
Number of pages	7
Journal	ISIJ International
Volume	56
Issue number	4
DOIs	https://doi.org/10.2355/isijinternational.ISIJINT-2015-486
Publication status	Published - 2016
Externally published	Yes

Keywords

blast furnace slags
CaO-SiO2-Al2O3-MgO system
EPMA
liquidus temperature
phase equilibria

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10.2355/isijinternational.ISIJINT-2015-486

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abstract = "Phase equilibria and liquidus temperatures in the CaO-SiO2-Al2O3-MgO system with CaO/SiO2 weight ratio of 1.10 have been experimentally determined by means of high temperature equilibration and quenching technique followed by electron probe X-ray microanalysis. Isotherms in the interval of 20 K between 1 613 and 1 733 K were determined in the primary phase fields of dicalcium silicate, wollastonite, merwinite, periclase, spinel and melilite that are relevant to ironmaking slags. Effects of Al2O3, MgO and CaO/SiO2 ratio on the liquidus temperatures have been discussed to assist optimum operation of iron blast furnace. Compositions of the solid solutions corresponding to the liquidus have been accurately measured that will be used for development of the thermodynamic database.",

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author = "Xiaodong Ma and Dianwei Zhang and Zhixing Zhao and Tim Evans and Baojun Zhao",

year = "2016",

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AU - Ma, Xiaodong

AU - Zhang, Dianwei

AU - Zhao, Zhixing

AU - Evans, Tim

AU - Zhao, Baojun

PY - 2016

Y1 - 2016

N2 - Phase equilibria and liquidus temperatures in the CaO-SiO2-Al2O3-MgO system with CaO/SiO2 weight ratio of 1.10 have been experimentally determined by means of high temperature equilibration and quenching technique followed by electron probe X-ray microanalysis. Isotherms in the interval of 20 K between 1 613 and 1 733 K were determined in the primary phase fields of dicalcium silicate, wollastonite, merwinite, periclase, spinel and melilite that are relevant to ironmaking slags. Effects of Al2O3, MgO and CaO/SiO2 ratio on the liquidus temperatures have been discussed to assist optimum operation of iron blast furnace. Compositions of the solid solutions corresponding to the liquidus have been accurately measured that will be used for development of the thermodynamic database.

AB - Phase equilibria and liquidus temperatures in the CaO-SiO2-Al2O3-MgO system with CaO/SiO2 weight ratio of 1.10 have been experimentally determined by means of high temperature equilibration and quenching technique followed by electron probe X-ray microanalysis. Isotherms in the interval of 20 K between 1 613 and 1 733 K were determined in the primary phase fields of dicalcium silicate, wollastonite, merwinite, periclase, spinel and melilite that are relevant to ironmaking slags. Effects of Al2O3, MgO and CaO/SiO2 ratio on the liquidus temperatures have been discussed to assist optimum operation of iron blast furnace. Compositions of the solid solutions corresponding to the liquidus have been accurately measured that will be used for development of the thermodynamic database.

KW - blast furnace slags

KW - CaO-SiO2-Al2O3-MgO system

KW - EPMA

KW - liquidus temperature

KW - phase equilibria

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Phase equilibria studies in the CaO-SiO₂- Al₂O₃-MgO system with CaO/SiO₂ Ratio of 1.10

Abstract

Keywords

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