Abstract
The leaching residue in zinc smelting system is taken as the research object, and the experiment of leaching residue in reduction leaching under sulphuric acid–sulfur dioxide system is carried out. The effects of reaction temperature, liquid–solid ratio, initial sulfuric acid concentration , partial pressure of SO2, and stirring speed on leaching rate of medium leaching residue under sulfuric acid -sulfur dioxide reduction conditions were studied. The leaching rates of zinc 95.24%, iron 98.66%, indium 95.04%, and copper 0.036% in medium leaching residue can be obtained at the conditions of temperature of 105 °C, time of 4 h, liquid–solid ratio of 8 ml/g, initial sulfuric acid concentration of 120 g/L, SO2 partial pressure of 200 kPa, and stirring speed of 500 r/min.
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Acknowledgements
This work was supported financially by the National Natural Science Foundation of China (Grant Nos. 51804146, 51664030, and 51564030), National Key Research Development Program of China (Grant No. 2018YFC1900402), and the Analysis and Testing Center of Kunming University of Science and Technology, China.
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Deng, Zg. et al. (2020). Reductive Leaching of Indium-Bearing Zinc Leaching Residue in Sulfuric Acid and Sulfur Dioxide. In: Azimi, G., Forsberg, K., Ouchi, T., Kim, H., Alam, S., Baba, A. (eds) Rare Metal Technology 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36758-9_36
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DOI: https://doi.org/10.1007/978-3-030-36758-9_36
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