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Multi-Step Thermodynamic Calculation for Copper Dross Bath Smelting Process

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Abstract

The oxygen-rich bath smelting process of copper dross was simulated using Factsage software. It was found that the two-step simulation results agreed better with the industrial data, especially in the speiss. Bi, Pb, Sb, As, and Cu contents in the speiss by two-step simulation differed from the industrial data by 0.6 wt.%, 0.8 wt.%, 2.6 wt.%, 7.2 wt.%, and 8.6 wt.%, respectively. Two-step simulation results indicated that the speiss partitioning of Sb, As, and Cu increased from 60.1%, 32.3%, and 27.5% to 81.6%, 67.8%, and 47.2%, respectively, with the smelting temperature increasing from 1050 °C to 1250 °C. While the metal partitioning of Sb and Cu increased from 0% and 2.7% to 15.2% and 13.3%, respectively, with the separation temperature increasing from 400 °C to 700 °C.

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Funding

The financial supports from the National Key Research and Development Program of China (2018YFC1901604), Natural Science Foundation of Hunan province (No. 2018JJ3662), China Scholarship Council (No. 201706375005) and China Postdoctoral Science Foundation (No. 2018 M632988), and the help from Dr. Jiang CHEN for EPMA analysis (Centre for Advanced Microscopy, the Australian National University, Australia) are gratefully acknowledged.

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Authors and Affiliations

  1. School of Metallurgy and Environment, Central South University, Changsha, 410083, China

    Boyi Xie, Hui Xiao, Lin Chen, Weifeng Liu, Duchao Zhang & Tianzu Yang

  2. National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals, Changsha, 410083, China

    Boyi Xie, Hui Xiao, Lin Chen, Weifeng Liu, Duchao Zhang & Tianzu Yang

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  1. Boyi Xie
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  2. Hui Xiao
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Correspondence to Lin Chen.

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Xie, B., Xiao, H., Chen, L. et al. Multi-Step Thermodynamic Calculation for Copper Dross Bath Smelting Process. Mining, Metallurgy & Exploration 38, 233–241 (2021). https://doi.org/10.1007/s42461-020-00329-z

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