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Basic Physical Properties of Aluminum Alloys and Their Electrolyte Systems Prepared by Molten Salt Electrolysis Using Black Aluminum Dross as Raw Material

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Abstract

The density and surface tension of the proposed molten salt system of different components Na3AlF6-AlF3-CaF2-BAD were measured by Archimedes and separation methods at 940–980°C. The dissolution rate of black aluminum dross (BAD) and aluminum oxide in the electrolyte after denitrification was compared. The aluminum alloy was prepared from BAD raw materials, and the influence of BAD content on alloy composition was studied. The results showed that the electrolyte system density and surface tension exhibited a downward trend with increasing temperature, aluminum fluoride content, and BAD content. Other impurity elements in BAD had only limited influence on the density and surface tension of the electrolyte system. The dissolution rate of denitrified BAD in the electrolyte was slightly greater than that of alumina. The content of each metal element in the aluminum alloy increased with increasing proportion of BAD.

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Acknowledgements

This study was supported by the National Key Research and Development Program of China (2019YFC1908403). The authors are grateful to the reviewers who helped to improve the paper by many pertinent comments and suggestions.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China

    Zhengping Zuo, Yubao Liu, Guoqing Yu, Fengqin Liu & Hongliang Zhao

  2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Zhengping Zuo, Guoqing Yu, Fengqin Liu & Hongliang Zhao

  3. Beijing Key Laboratory of Green Recovery and Extraction of Rare and Precious Metals, University of Science and Technology Beijing, Beijing, 100083, China

    Zhengping Zuo, Guoqing Yu, Fengqin Liu & Hongliang Zhao

  4. State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou, 014030, Inner Mongolia, China

    Yubao Liu & Jia Kang

Authors
  1. Zhengping Zuo
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  2. Yubao Liu
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  3. Jia Kang
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  4. Guoqing Yu
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  5. Fengqin Liu
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  6. Hongliang Zhao
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Contributions

ZZ: Conceptualization, Investigation, Data curation, Writing-original draft. FL: Methodology, Conceptualization, Resources, Writing-review and editing. HZ: Conceptualization, Writing-review and editing. YL: Supervision, Data curation. JK: Supervision, Data curation. GY: Supervision, Data curation, Conceptualization.

Corresponding authors

Correspondence to Fengqin Liu or Hongliang Zhao.

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Zuo, Z., Liu, Y., Kang, J. et al. Basic Physical Properties of Aluminum Alloys and Their Electrolyte Systems Prepared by Molten Salt Electrolysis Using Black Aluminum Dross as Raw Material. JOM 74, 2037–2046 (2022). https://doi.org/10.1007/s11837-021-05149-0

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  • DOI: https://doi.org/10.1007/s11837-021-05149-0

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