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- W4246 abstract "Present study is a part of an overall program on development of the accurate viscosity model of the complex multi-component slag system for Cu production. Viscosity measurements have been carried out in the “Cu2O”-rich area of the “Cu2O”-SiO2-Al2O3 system in equilibrium with metallic copper at temperatures of 1473-1588 K using Al2O3 crucible and spindle aiming to obtain the viscosity data in the “Cu2O” and “Cu2O”-SiO2 systems. The custom designed rotating spindle apparatus enables control of the gas atmosphere and rapid quenching of the samples on completion of the experiment. It was found that the solubility of Al2O3 is negligible in the “Cu2O” melt and is limited in the “Cu2O”-SiO2-Al2O3 melt under experimental conditions. The fact that the samples are quenched directly after the viscosity measurement enables the compositions and phase assemblage of the slag at temperature to be accurately measured and characterized.The microstructures and phase compositions in the quenched slag samples are determined by Electron Probe X-ray Microanalysis (EPMA). The bulk compositions of the samples are measured with X-ray Fluorescence analysis (XRF).It is believed that the present data are the first experimental measurements of viscosities in this high “Cu2O” slag system in equilibrium with metallic Cu. The self-consistency of the measurements was analysed with Modified Urbain model. The viscosities of “Cu2O”-SiO2 liquid in equilibrium with metallic Cu was derived from the model. A correlation was found between activation energies and against ionic strength (z/r). Further development of quasi-chemical viscosity model will be carrid out incorporating the Cu2O prediction." @default.
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- W4246 date "2012-01-01" @default.
- W4246 modified "2023-09-22" @default.
- W4246 title "Viscosity measurements of high “Cu2O” containing slags in the “Cu2O”-SiO2-Al2O3 system in equilibrium with metallic Cu" @default.
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