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首页> 外文会议>International conferece on molten slags, fluxes and salts >Viscosity measurements of high “Cu2O” containing slags in the “Cu2O”-SiO2-Al2O3 system in equilibrium with metallic Cu
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Viscosity measurements of high “Cu2O” containing slags in the “Cu2O”-SiO2-Al2O3 system in equilibrium with metallic Cu

机译：用金属Cu平衡中“Cu 2 O”-SiO2-Al2O3系统中的高“Cu2O”炉渣的粘度测量

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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.
机译：目前的研究是关于Cu生产复杂多组分渣系统精确粘度模型的整体方案的一部分。在使用Al2O3坩埚和主轴的温度为1473-1588k的金属铜的“Cu2O”-SiO2-Al2O3系统中的“Cu2O”-SiO2-Al2O3系统中的粘度测量已经在1473-1588k的温度下进行。旨在获得“粘度数据” CU2O“和”CU2O“-SIO2系统。定制设计的旋转主轴装置能够在实验完成时控制气体气氛和对样品的快速淬火。发现在“Cu 2 O”熔体中，Al 2 O 3的溶解度可以忽略不计，并且在实验条件下在“Cu 2 O”-SiO 2 -Al2O3熔体中受到限制。在粘度测量之后直接淬灭样品的事实使得炉渣的组合物和相位组合能够精确地测量和表征。淬火渣样品中的微观结构和相组合物由电子探针X射线微基分析（EPMA）测定。用X射线荧光分析（XRF）测量样品的本体组合物。据信，本数据是与金属Cu平衡的该高“CU2O”渣系统中粘度的第一次实验测量。用修改的URBain模型分析了测量的自我一致性。衍生自模型衍生金属Cu平衡中的“Cu2O”-SiO2液的粘度。在激活能量和离子强度（Z / R）之间发现了相关性。准化学粘度模型的进一步发展将结合CU2O预测。

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