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Experimental Study on Separation of Iron and Arsenic from Copper Sulfate Solution

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Abstract

A certain quantity of iron was present in the waste acid leach copper smelting dust, which affects the quality of the copper and current efficiency. Elimination of iron and arsenic, the effects of various temperatures, times, H2O2 dosage, and initial pH were researched. The experimental findings indicated that the ideal conditions were 80°C, 3 h, hydrogen peroxide 6.5 times the dose of Fe2+ in the theoretical oxidizing solution, and initial pH of 4. Arsenic removal rate was 99.5%, while iron removal rate could be 98.99%. The solution’s iron concentration and arsenic concentration were both < 0.01 g/L under ideal circumstances. In addition, the morphology of the substances or elements involved in the precipitation of iron and arsenic was examined using XRD and thermodynamic studies, and the morphology of the precipitated slag was examined using SEM-EDS. These results show that hydrogen peroxide succeeded in removing arsenic and iron from the copper sulfate solution, and a pure copper sulfate solution was obtained.

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Data Availability

The data cannot be made publicly available upon publication because they are not available in a format that is sufficiently accessible or reusable by other researchers. The data that support the findings of this study are available upon reasonable request from the authors.

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Acknowledgements

This work has received support from The Study of the Phase Evolution and Mechanism of Anode Copper Impurity Precipitation and Its Role in the Formation of Core-Shell Anode Slime. Basic Research Project of Yunnan Province - General Program (No. 202001AT070089); Yunnan Ten Thousand Talents Plan Young & Elite Talents Project Fund (YNWR-QNBJ-2018-327); Study on the synergistic treatment of open-circuit arsenic and the preparation of high-purity copper by high-copper dust and waste acid, No. DNTY-JH-09-(2021)029.

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Authors and Affiliations

  1. Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China

    Weisong Cai, **aohua Yu, Yan Lin, Qingfeng Shen & Yiming Zhu

  2. China Copper Southeast Copper Co., LTD, Ningde, 352106, Fujian, China

    Hongkun Dai

  3. Yunnan Copper Technology Development Co., LTD, Kunming, 650101, Yunnan, China

    Yonggang Li

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  1. Weisong Cai
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  2. **aohua Yu
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  3. Yan Lin
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  4. Qingfeng Shen
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  5. Yiming Zhu
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  6. Hongkun Dai
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Contributions

Weisong Cai: manuscript writing and editing-first draft. **aohua Yu: Review articles and propose revisions. Yan Lin: supervision and funding acquisition. Qingfen Shen: enterprise investigation. Hongkun Dai: resources. Yonggang Li: supervision.

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Correspondence to **aohua Yu.

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Cai, W., Yu, X., Lin, Y. et al. Experimental Study on Separation of Iron and Arsenic from Copper Sulfate Solution. JOM (2024). https://doi.org/10.1007/s11837-024-06614-2

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