Measurement and Characterization of the Apparent Viscosity of Fe–C Melts during Solidification

Zhang, Yanling; Qi, Li; An, Zhuoqing; Zhang, Guo

doi:10.2355/isijinternational.isijint-2015-389

Cited by 5 publications

(4 citation statements)

References 20 publications

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“…It was assumed that the particles in suspensions had spherical shapes and different sizes rather than a uniform particle size, as represented in Equation (1). [ 44,45 ]

η = η_{0} {false(1 - f false)}^{- 2.5}

where η is the viscosity of the suspension (effective viscosity), η 0 is the viscosity of the solvent (liquid slag), and f is the volume fraction of the solid phase. For a specific suspension, the ratio of η / η 0 exhibited a positive correlation with f .…”

Section: Resultsmentioning

confidence: 99%

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Evolution of Viscosity and Structure Property during Aluminothermic Reduction of Vanadium‐Enriched Slag

Zhang

Chen

Sun

2022

steel research int.

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Aluminum dross is a promising reductant for extracting vanadium to enable the direct production of ferrovanadium alloy in pre-reduced vanadium-rich slag (PVS). The evolution of the viscosity of PVS is measured with various A/M ratios (w()), representing different reduction stages. The compositions and structural properties of the melts are analyzed using X-ray powder diffraction, scanning electron microscopy, and Raman spectroscopy. The results show that with an increase in the mass ratio of Al 2 O 3 to (FeOþCr 2 O 3 þMnOþV 2 O 3 þAl 2 O 3 ) in the slag transformed from a solid-liquid mixture to a single liquid phase at 1873 K. When A/M increases from 0.29 to 0.53, Q 0 and Q 1 polymerize into Q 2 , resulting in a slow increase in viscosity from 0.091 to 0.158 Pa s. As A/M further increased to 1.00, Q 0 disappeared, Q 3 appeared, and the fraction of Al-O-Si increased to 37.7%, indicating that the simple aluminosilicate structural units are polymerized into complex structural units. Meanwhile, the viscosity increases to 0.338 Pa s. Al 2 O 3 acts as a network former and strengthens the degree of polymerization of the melt. The variation ranges of the apparent activation energy, structural complexity, and the average number of non-bridging oxygen are 139.23-215.12 kJ mol À1 , 0.57-2.97, and 2.16-1.05, respectively.

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“…It was assumed that the particles in suspensions had spherical shapes and different sizes rather than a uniform particle size, as represented in Equation (1). [ 44,45 ]

η = η_{0} {false(1 - f false)}^{- 2.5}

Section: Resultsmentioning

confidence: 99%

“…It was assumed that the particles in suspensions had spherical shapes and different sizes rather than a uniform particle size, as represented in Equation ( 1). [44,45]…”

Section: Evolution Of the Viscositymentioning

confidence: 99%

Evolution of Viscosity and Structure Property during Aluminothermic Reduction of Vanadium‐Enriched Slag

Zhang

Chen

Sun

2022

steel research int.

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“…Baum et al [52] pointed out that there was an obvious difference in the viscosity of Fe-C melt with 0.001wt% inclusion and 0.003-0.006 wt% inclusion of [O]. Zhang et al [34] studied the evolution of apparent viscosity of Fe-C melt during solidification under different cooling rates and shear forces. The results showed that the solid fraction in Fe-C melt has a great influence on the apparent viscosity, and when the solid fraction reaches a critical value, the apparent viscosity increases sharply.…”

Section: Inclusionmentioning

confidence: 99%

“…Belashchenko [17] Fe-C OV / Beryllia Zhang et al [32] Basic pig iron, Bel'tyukov et al [33] Fe-Si DT / / Zhang et al [34] Fe-C RC Mori and Ototake Equation Alumina Takeda et al [27] Fe-B、Fe-C OV / / Deng et al [35] Fe-C、Fe-C-Si、…”

Section: Aluminamentioning

confidence: 99%

Review on the Viscosity of Iron-based Melts in Metallurgical Process

et al. 2022

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Low-carbon metallurgy is a critical issue for the world in the 21st century and improving production efficiency is one of the main ways to resolve this problem. Ironbased alloy runs through the whole process of metallurgy, and the viscosity properties of melt is of great significance on the process of reaction, transportation and solidification casting, which is one of the constraints on production efficiency. The research progress of the viscosity of iron-based melt is summarized from the aspects of measurement methods, influencing factors and prediction models in this paper. It is briefly concluded that the oscillating method is the most widely used measurement method of iron-based melts and pointed out that the interaction between the components and the formation of inclusions will have a significant effect on the viscosity of ironbased melts. And the three semi-empirical models derived from the Andrade equation can be applied to the viscosity prediction of molten iron as the pre-revised basic equations with greater precision. Then the direction of iron-based melt viscosity 2 research in the future is prospected at last.

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Recovery of Valuable Metals and Production of Fe-V Crude Alloy from Vanadium-Enriched Slag Using Aluminum Dross as a Reductant

Zhang

Chen

2022

JOM

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Measurement and Characterization of the Apparent Viscosity of Fe–C Melts during Solidification

Cited by 5 publications

References 20 publications

Evolution of Viscosity and Structure Property during Aluminothermic Reduction of Vanadium‐Enriched Slag

Evolution of Viscosity and Structure Property during Aluminothermic Reduction of Vanadium‐Enriched Slag

Review on the Viscosity of Iron-based Melts in Metallurgical Process

Recovery of Valuable Metals and Production of Fe-V Crude Alloy from Vanadium-Enriched Slag Using Aluminum Dross as a Reductant

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