Effect of Al_2O_3 and Cr_2O_3 on Liquidus Temperatures in the Cristobalite and Tridymite Primary Phase Fields of the MgO-"FeO"-SiO_2 System in Equilibrium with Metallic Iron

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概要

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• The effects of alumina and chromite impurities on the liquidus temperatures in the cristobalite/tridymite (SiO2) primary phase fields in the MgO-“FeO”-SiO2 system in equilibrium with metallic iron have been investigated experimentally. Using high temperature equilibration and quenching followed by electron probe X-ray microanalysis (EPMA), liquidus isotherms have been determined in the temperatures range 1673 to 1898 K. The results are presented in the form of pseudo-ternary sections of the MgO-“FeO”-SiO2 system at 2, 3 and 5 wt% Al2O3, 2 wt% Cr2O3, and 2 wt% Cr2O3+2 wt% Al2O3. The study enables the liquidus to be described for a range of SiO2/MgO and MgO/FeO ratios. It was found that liquidus temperatures in the cristobalite and tridymite primary phase fields, decrease significantly with the addition of Al2O3 and Cr2O3.

• 社団法人 日本鉄鋼協会の論文
• 2005-06-15

著者

• Hayes Peter

  Univ. Queensland Brisbane Aus

• Hayes Peter

  Pyrometallurgy Research Centre School Of Engineering The University Of Queensland

• CHEN Shengqi

  Pyrometallurgy Research Centre, School of Engineering, The University of Queensland

• JAK Evgueni

  Pyrometallurgy Research Centre, School of Engineering, The University of Queensland

• Chen Shengqi

  Pyrometallurgy Research Centre School Of Engineering The University Of Queensland

• Jak Evgueni

  Centre For Coal In Sustainable Development Pyrometallurgy Research Centre School Of Engineering The

関連論文

• Development of a Quasi-chemical Viscosity Model for Fully Liquid Slags in the Al_2O_3-CaO-'FeO'-MgO-SiO_2 System : The Experimental Data for the 'FeO'-MgO-SiO_2, CaO-'FeO'-MgO-SiO_2 and Al_2O_3-CaO-'FeO'-MgO-SiO_2 Systems at Iron Saturation
• Development of a Quasi-chemical Viscosity Model for Fully Liquid Slags in the Al_2O_3-CaO-'FeO'-MgO-SiO_2 System. Part 3. Summary of the Model Predictions for the Al_2O_3-CaO-MgO-SiO_2 System and Its Sub-systems
• Development of a Quasi-chemical Viscosity Model for Fully Liquid Slags in the Al_2O_3-CaO-'FeO'-MgO-SiO_2 System. Part 2. A Review of the Experimental Data and the Model Predictions for the Al_2O_3-CaO-MgO, CaO-MgO-SiO_2 and Al_2O_3-MgO-SiO_2 Systems
• Development of a Quasi-chemical Viscosity Model for Fully Liquid Slags in the Al_2O_3-CaO-'FeO'-MgO-SiO_2 System. Part 1. Description of the Model and Its Application to the MgO, MgO-SiO_2, Al_2O_3-MgO and CaO-MgO Sub-systems
• Effects of Al_2O_3 on Phase Equilibria in the Olivine Primary Phase Field of the MgO-"FeO"-SiO_2-Al_2O_3 System in Equilibrium with Metallic Iron
• Phase Equilibria in the Olivine Primary Phase Field in the MgO-"FeO"-SiO_2 System in Equilibrium with Metallic Iron
• Effect of Al_2O_3 and Cr_2O_3 on Liquidus Temperatures in the Cristobalite and Tridymite Primary Phase Fields of the MgO-"FeO"-SiO_2 System in Equilibrium with Metallic Iron
• Phase Equilibria in the Cristobalite, Tridymite and Pyroxene Primary Phase Fields in the MgO-"FeO"-SiO_2 System in Equilibrium with Metallic Iron
• Phase Equilibria in the System "MnO"-CaO-MgO-SiO_2-Al_2O_3 with Al_2O_3/SiO_2 Weight Ratio of 0.17 and MgO/CaO Weight Ratio of 0.25 at Mn-Si Alloy Saturation

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