Rheological Behavior of Fayalite Based Secondary Copper Smelter Slag in Iron Saturation

Shi, Huayue; Chen, Liugang; Malfliet, Annelies; Jones, Tom Peter; Blanpain, Bart; Guo, Muxing

doi:10.1007/978-3-319-48769-4_141

Cited by 3 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The importance of mentioning the shear rate range for determining the flow index was motivated earlier in literature. 32 At higher shear rates, the curve becomes less steep, going into the second Newtonian regime. 6 The variation of the flow indices with the vol% of spinel particles for the three datasets can be seen in FIG.…”

Section: Flow Curvesmentioning

confidence: 99%

Viscosity experiments of slag-spinel suspensions: The effect of volume fraction, particle size, and shear rate

Vergote,

Bellemans,

Van den Bulck

et al. 2023

Journal of Rheology

View full text Add to dashboard Cite

Heterogeneous slag viscosity measurements have a wide variety of parameters, such as particle size, shape, solid volume fraction, and shear rate, which affect the final measured viscosity. Often, some of these parameters are neglected or predicted via models, since it is experimentally difficult to determine them during high-temperature slag viscosity measurements. In this work, a viscosity apparatus was used, which allows quenching of the sample after measurement. This way, all relevant parameters could be experimentally determined. The viscosities of three datasets were studied with various spinel sizes: small (13 μm), medium (34 μm), and large particles (76 μm). Within each dataset, the composition of the liquid slag matrix was kept constant to uniquely measure the effect of solids. Shear thinning, i.e., a decreasing viscosity with increasing shear rate, was observed for all samples, even at a low vol. % of 1.8. Moreover, stronger shear thinning was observed at a higher vol. % and for smaller spinel particles. On the basis of these results, the phenomenon of shear thinning was discussed and mainly attributed to the particle–particle orientation in the suspension. The obtained viscosity values were used to optimize a Krieger–Dougherty equation, which describes the viscosity increase caused by the presence of a certain vol. % of spinel particles, with a certain size and at a specific shear rate.

show abstract

Section: Flow Curvesmentioning

confidence: 99%

Viscosity experiments of slag-spinel suspensions: The effect of volume fraction, particle size, and shear rate

Vergote,

Bellemans,

Van den Bulck

et al. 2023

Journal of Rheology

View full text Add to dashboard Cite

show abstract

Investigation of Bath/Freeze Lining Interface Temperature Based on the Rheology of the Slag

Nagraj

Chintinne²,

Guo

et al. 2021

JOM

Self Cite

View full text Add to dashboard Cite

Freeze lining is a solidified layer of slag formed on the inner side of a water-cooled pyrometallurgical reactor, which protects the reactor walls from thermal, physical, and chemical attacks. Because of the freeze lining's high thermal resistance, the reactor heat losses strongly depend on the freeze lining thickness. In a batch process such as slag fuming, the conditions change with time, affecting the freeze lining thickness. Determining the freeze lining thickness is challenging as it cannot be measured directly. In this study, a conceptual framework based on the morphology and microstructure of freeze lining and the rheology of the slag is discussed and experimentally evaluated to determine the freeze lining thickness. It was found that the bath/freeze lining interface lies just below critical viscosity temperature. The growth of the freeze lining is primarily controlled by the mechanical and thermal degradation of the crystals forming at the interface. The bath/freeze lining interface temperature for the measured slag lies in the range of 1035–1070°C.

show abstract

High-temperature viscosity analysis of aluminosilicate melts and the comparison to empirical models

Kim

Park

et al. 2020

J. Korean Ceram. Soc.

View full text Add to dashboard Cite

Rheological Behavior of Fayalite Based Secondary Copper Smelter Slag in Iron Saturation

Cited by 3 publications

References 4 publications

Viscosity experiments of slag-spinel suspensions: The effect of volume fraction, particle size, and shear rate

Viscosity experiments of slag-spinel suspensions: The effect of volume fraction, particle size, and shear rate

Investigation of Bath/Freeze Lining Interface Temperature Based on the Rheology of the Slag

High-temperature viscosity analysis of aluminosilicate melts and the comparison to empirical models

Contact Info

Product

Resources

About