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Metallurgical and Materials Transactions B
Published in: Metallurgical and Materials Transactions B 2/2015

01-04-2015

Viscosity Measurements of SiO2-“FeO”-CaO System in Equilibrium with Metallic Fe

Authors: Mao Chen, Baojun Zhao

Published in: Metallurgical and Materials Transactions B | Issue 2/2015

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Abstract

Viscosities of the synthetic slags have been measured at the temperature range of 1423 K to 1773 K (1150 °C to 1500 °C) in the SiO2-“FeO”-CaO system in equilibrium with Fe. The rotational spindle technique was employed in the measurements using molybdenum crucibles and spindles. Analysis of the quenched sample by electron probe X-ray microanalysis after the viscosity measurement enables the composition and microstructure of the slag to be directly linked with the viscosity. Effects of CaO and “FeO” on viscosity have been compared at different SiO2 concentrations. It was found that at low SiO2 concentration, the viscosities increase with the increasing CaO/“FeO” ratio. At high SiO2 concentration, the viscosities first decrease and then increase with the increasing CaO/“FeO” ratio. The activation energies increase with the increasing CaO/“FeO” ratio. The modified Quasi-chemical viscosity model has been further optimized in this system using the new viscosity measurements.
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Metadata
Title
Viscosity Measurements of SiO2-“FeO”-CaO System in Equilibrium with Metallic Fe
Authors
Mao Chen
Baojun Zhao
Publication date
01-04-2015
Publisher
Springer US
Published in
Metallurgical and Materials Transactions B / Issue 2/2015
Print ISSN: 1073-5615
Electronic ISSN: 1543-1916
DOI
https://doi.org/10.1007/s11663-014-0241-6

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