Modeling the Viscosity of Alumino‐Silicate Melt

Zhang, Guohua; Chou, Kuo‐Chih

doi:10.1002/srin.201200196

Cited by 13 publications

(11 citation statements)

References 23 publications

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“…However, re cently a method has been developed to calculate these concentrations without the aid of a mathematical model [26][27][28][29] and this would appear to be exceedingly useful in predicting properties since it can differentiate be tween SiO and AlO bonds and their effects on specific properties.…”

Section: Concentrations Of O O ; O − and O 2−mentioning

confidence: 98%

A Review of the Factors Affecting the Thermophysical Properties of Silicate Slags

Mills¹,

Yuan

et al. 2012

High Temperature Materials and Processes

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This paper is dedicated to the memory of the of Prof. Masanori Iwase and his life and work. The factors which affect the thermophysical properties of silicate and aluminnosilicate slags are reviewed. These include (i) the polymerisation of the silicate network (ii) various cation effects and (iii) temperature. Of these, the degree of poly merisation of the silicate network (expressed here through the parameter Q (= 4NBO/T)) is the most important and the viscosity (η), electrical resistivity and thermal conduc tivity all increase as Q increases. Various ways in which different cations affect the properties are considered for each individual property viz. the -M-O bond strength affects (i) liquidus temperature (ii) activity coefficient of SiO 2 and (iii) thermal expansion coefficient and whereas both the size and number of available cations affect the electrical conductivity and resistivity.The following observations were made: i. There is less scatter in property data for liquid slags at a specific temperature than that for the liquidus temperature. ii. The relation between Arrhenius parameters, ln A and B for viscosity and electrical resistivity is nonlinear. iii. The magnitude of the thermal conductivity (k) in solid slags is related to the rigidity of silicate network and the rapid decrease in k with increasing temperature occurs at a temperature where the viscosity reaches η = 10 6 dPas. iv. The introduction of Al 2 O 3 into the silicate chain results in significant changes to the propertiesThe ways in which the various properties can be calcu lated from chemical composition are outlined.

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Section: Concentrations Of O O ; O − and O 2−mentioning

confidence: 98%

A Review of the Factors Affecting the Thermophysical Properties of Silicate Slags

Mills¹,

Yuan

et al. 2012

High Temperature Materials and Processes

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“…These viscosity models can be generally classified into two groups, empirical models and structural models. [7][8][9][10][11][12] The Multi-Phase Equilibrium (MPE) is a thermodynamic package developed by CSIRO for simulating reactions between phases in multi-component and multiphase systems. [13][14][15] Through application of the thermodynamic model MPE, the viscosity and liquidus temperature of BF slags were calculated and compared with published experimental data.…”

Section: Operation Characteristic Of Super-large Blast Furnace Slag Imentioning

confidence: 99%

Operation Characteristic of Super-Large Blast Furnace Slag in China

et al. 2017

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“…A number of viscosity models have been developed to predict the viscosity in the SiO 2 –Al 2 O 3 –CaO–MgO (typical BF slag components) system over the last decades. These viscosity models can be generally classified into two groups, empirical models and structural models . The empirical models correlate slag viscosity as a function of temperatures and bulk compositions directly using experimental data.…”

Section: Introductionmentioning

confidence: 99%

“…These viscosity models can be generally classified into two groups, empirical models [2][3][4][5] and structural models. [6][7][8][9][10][11][12][13][14][15][16][17] The empirical models correlate slag viscosity as a function of temperatures and bulk compositions directly using experimental data. The structural models consider pro-found internal structure of silicate melts, which have a better extensibility than empirical models.…”

Section: Introductionmentioning

confidence: 99%

Viscosity Model for Iron Blast Furnace Slags in SiO₂–Al₂O₃–CaO–MgO System

Chen

Wei-dong

et al. 2015

steel research int.

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Operational performance of ironmaking processes is determined to a great extent by its slag viscosity. A simple and accurate viscosity model for blast furnace (BF) slags has been developed based on the Urbain model using the critically evaluated experimental data reported by the authors and other researchers. A total number of 2958 viscosity measurements from 582 compositions in the SiO2–Al2O3–CaO–MgO system have been collected from 34 publications. These data have been critically reviewed for developing a viscosity model for ironmaking slags. The model has been significantly revised by consideration of alumina behavior in this system and re‐optimization of the parameters using large quantity and high quality data. The new model has less number of parameters, but better performance in the viscosity predictions. Applications of the new viscosity model on BF operation have been discussed.

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Modeling the Viscosity of Alumino‐Silicate Melt

Abstract: The structurally based viscosity model for aluminosilicate melts is developed, in which the influence of melt structure on viscosity is expressed by the definitions of different types of oxygen ions: (i)

Cited by 13 publications

References 23 publications

A Review of the Factors Affecting the Thermophysical Properties of Silicate Slags

A Review of the Factors Affecting the Thermophysical Properties of Silicate Slags

Operation Characteristic of Super-Large Blast Furnace Slag in China

Viscosity Model for Iron Blast Furnace Slags in SiO₂–Al₂O₃–CaO–MgO System

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Modeling the Viscosity of Alumino‐Silicate Melt

Abstract: The structurally based viscosity model for aluminosilicate melts is developed, in which the influence of melt structure on viscosity is expressed by the definitions of different types of oxygen ions: (i)

Cited by 13 publications

References 23 publications

A Review of the Factors Affecting the Thermophysical Properties of Silicate Slags

A Review of the Factors Affecting the Thermophysical Properties of Silicate Slags

Operation Characteristic of Super-Large Blast Furnace Slag in China

Viscosity Model for Iron Blast Furnace Slags in SiO2–Al2O3–CaO–MgO System

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Product

Resources

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Viscosity Model for Iron Blast Furnace Slags in SiO₂–Al₂O₃–CaO–MgO System