Phase Equilibria and Thermodynamics of FeO・Cr_2O_3-MgO・Cr_2O_3-MgO・Al_2O_3 Spinel Structure Solid Solution Saturated with (Cr, Al)_2O_3
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概要
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Thermodynamic properties of chromium ore are imortant to control the new process for crude stainless steel production in a converter, in particular, pre-reduction of the ore in the process. In the present work, phase equilibria and the activities of iron chromite in FeO·Cr<SUB>2</SUB>O<SUB>3</SUB>-MgO·Cr<SUB>2</SUB>O<SUB>3</SUB>-MgO·Al<SUB>2</SUB>O<SUB>3</SUB> spinel structure solid solution saturated with (Cr, Al)<SUB>2</SUB>O<SUB>3</SUB> have been determined at 1573 K, by the equilibrium of iron dissolved in liquid silver held in the spinel structure solid solution crucible wih CO-CO<SUB>2</SUB> gas mixture. No measurable solubility of FeO·Cr<SUB>2</SUB>O<SUB>3</SUB>-MgO·Cr<SUB>2</SUB>O<SUB>3</SUB>-MgO·Al<SUB>2</SUB>O<SUB>3</SUB> solid solution in (Cr, Al)<SUB>2</SUB>O<SUB>3</SUB> phase was detected, while small solubility of (Cr, Al)<SUB>2</SUB>O<SUB>3</SUB> in the spinel structure solid solution phase was found. Tie-lines between (Cr, Al)<SUB>2</SUB>O<SUB>3</SUB> and the spinel structure phases were determined. The activity of FeO·Cr<SUB>2</SUB>O<SUB>3</SUB> in FeO·Cr<SUB>2</SUB>O<SUB>3</SUB>-MgO·Cr<SUB>2</SUB>O<SUB>3</SUB>-MgO·Al<SUB>2</SUB>O<SUB>3</SUB> spinel structure solid solution saturated with (Cr, Al)<SUB>2</SUB>O<SUB>3</SUB> showed negative deviation from ideality. It was observed that the spinel structure solid solution showed regular solution behavior, and α-functions between each constituent in the FeO·Cr<SUB>2</SUB>O<SUB>3</SUB>-MgO·Cr<SUB>2</SUB>O<SUB>3</SUB>-MgO·Al<SUB>2</SUB>O<SUB>3</SUB> system were determined as follows;α<SUB>FeO·Cr<SUB>2</SUB>O<SUB>3</SUB> - MgO·Al<SUB>2</SUB>O<SUB>3</SUB></SUB> = –92000 (J), α<SUB>MgO·Cr<SUB>2</SUB>O<SUB>3</SUB> - MgO·Al<SUB>2</SUB>O<SUB>3</SUB> = – 30000 (J).
- 社団法人 日本鉄鋼協会の論文
- 1995-07-15
著者
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Hino Mitsutaka
Department of Metallurgy, Graduate School of Engineering, Tohoku University
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Hino Mitsutaka
Department Of Metallurgy Graduate School Of Engineering Tohoku University
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Hino Mitsutaka
Department Of Metallurgy Faculty Of Engineering Tohoku University
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Hino Mitsutaka
Tohoku University
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BAN-YA Shiro
Tohoku University.
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NAGASAKA Tetsuya
Department of Metallurgy, Graduate School of Engineering, Tohoku University
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Ban-ya Shiro
Tohoku University
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HIGUCHI Ken-ichi
Tohoku University
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Nagasaka Tetsuya
Department Of Metallurgy Graduate School Of Engineering Tohoku University
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Nagasaka Tetsuya
Department Of Environmental Studies Graduate School Of Environmental Studies Tohoku University
関連論文
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- The Role of Ca and Na Ions in the Effect of F Ion on Silicate Polymerization in Molten Silicate System
- The Estimation of the Iso-viscosity Lines in Molten CaF2–CaO–SiO2 System
- Measuring Strains for Hematite Phase in Sinter by Electron Backscattering Diffraction Method
- Numerical Analysis on Si Deoxidation of Molten Fe, Ni, Fe-Ni, Fe-Cr, Fe-Cr-Ni, Ni-Cu and Ni-Co Alloys by Quadratic Formalism
- Numerical Analysis on Si Deoxidation of Molten Fe-Ni and Ni-Co Alloys by Quadratic Formalism
- Phase Equilibria of Two-liquid CaO-MgO-Fe_tO-P_2O_5 Slag Saturated with (Mg, Fe)O
- Equilibrium Relation of Two Liquid CaO-MgO-Fe_tO-P_2O_5 Slag Phases Saturated with (Mg,Fe)O
- Deoxidation Equilibrium of Cr-Ni Stainless Steel with Si at the Temperatures from 1823 to 1923 K
- Deoxidation Equilibrium of Chromium Stainless Steel with Si at the Temperatures from 1823 to 1923K
- Viscosity of Liquid Fe-Cu-Si Alloy Formed in New Melting Process for Domestic Waste Incineration Residue
- Equilibrium between Dissolved Chromium and Oxygen in Liquid High Chromium Alloyed Steel Saturated with pure Cr_2O_3
- Elution Mechanism of Fluorine form Steelmaking Slag into Seawater
- Dissolution Behavior of Environmentally Regulated Elements from Steelmaking Slag into Seawater
- Dissolution Behavior of Nutrition Elements from Steelmaking Slag into Seawater
- Dissolution behavior of environmentally regulated elements from steelmaking slag into seawater
- Dissolution behavior of nutrition elements from steelmaking slag into seawater
- Activity Measurement of the Constituents in Molten Sn-Mg-Zn-Ternary Lead Free Solder Alloys by Mass Spectrometry
- Activity Measurement of Silicon in Molten Cu-Si Binary Alloy
- Activity Measurement of the Constituents in Molten Ag-In-Sn Ternary Alloy by Mass Spectrometry
- Thermodynamics of the Deoxidation Equilibrium of Aluminum in Liquid Nickel and Nickel-Iron Alloys
- PREFACE
- Activities of the Constituents in Spinel Splid Solution and Free Energies of Formation of MgO, MgO.Al_2O_3
- Sulphide Capacity and Sulphur Solubility in CaO-Al_2O_3 and CaO-Al_2O_3-CaF_2 Slags
- Aluminum Deoxidation Equilibrium of Molten Fe-Ni Alloy Coexisting with Alumina or Hercynite
- Magnesium Deoxidation Equilibrium of Molten Fe-Ni Alloy Expressed by Quadratic Formalism and Redlich-Kister Type Polynomial
- Phosphorus Gasification from Sewage Sludge during Carbothermic Reduction
- Ti Deoxidation Equilibrium in Molten Fe-Cr and Fe-Cr-Ni Alloys at Temperatures between 1823K and 1923K
- Ti Deoxidation Equilibrium in Molten Fe-Ni Alloys at Temperatures between 1823 to 1923K
- The Coordination of F Ions around Al and Ca Ions in Molten Aluminosilicate Systems
- The Role of Ca and Na Ions in the Effect of F Ion on Silicate Polymerization in Molten Silicate System
- The Estimation of the Iso-viscosity Lines in Molten CaF_2-CaO-SiO_2 System
- Identification of Titanium Oxide Phases Equilibrated with Liquid Fe-Ti Alloy Based on EBSD Analysis
- Carburization Degree of Iron Nugget Produced by Rapid Heating of Powdery Iron, Iron Oxide in Slag and Carbon Mixture
- Temperature Dependence of Ti Deoxidation Equilibria of Liquid Iron in Coexistence with 'Ti_3O_5' and Ti_2O_3
- Behavior of Ironmaking Slag Permeation to Carbonaceous Material Layer
- Equilibrium between Titanium and Oxygen in Liquid Fe-Ti Alloy Coexisted with Titanium Oxides at 1873K
- Kinetics of the Reaction of C_2H_6, CH_4-CO_2 and CO-CO_2-O_2 Gases with Liquid Iron
- Agglomeration Simulation of Chain-like Inclusions in Molten Steel Based on Fractal Cluster-Cluster Agglomeration Model
- Phase Equilibria and Thermodynamics of FeO・Cr_2O_3-MgO・Cr_2O_3-MgO・Al_2O_3 Spinel Structure Solid Solution Saturated with (Cr, Al)_2O_3
- Comments on "Evaluation of Thermodynamic Activity of Metallic Oxide in a Ternary Slag from the Sulphide Capacity of the Slag"
- Activity Measurement of the Constituents in Liquid Cu-Al Alloy with Mass-Spectrometry
- Kinetic Study on Recovery of Antimony in Anode Slime from Used Lead Batteries Utilizing Volatile Oxide Formation
- Numerical Analysis on Si Deoxidation of Molten Ni and Ni-Cu Alloy by Quadratic Formalism
- Prevention of Chromium Elution from Stainless Steel Slag into Seawater
- Estimation of Water Vapor Solubility in Molten Silicates by Quadratic Formalism Based on the Regular Solution Model.
- Effect of Pre-melting Operation on the Vaporization Behavior of Phosphorus from Incinerator Ash of Sewage Sludge
- Phase Equilibria and Activities of the Constituents in FeOCr2O3-MgOCr2O3 Spinel Solid Solution Saturated with Cr2O3.
- Evaporation Rate of Zinc in Liquid Iron.
- Effect of Al_2O_3 Refractories on Oxygen Content of Molten Fe-Cr Alloy