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Selective Extraction of Zinc from Refractory Hemimorphite Using Iminodiacetic Acid as a Complexing Agent

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Abstract

An environmentally friendly process for the selective extraction of zinc from refractory hemimorphite using iminodiacetic acid (H2Ida) as a complexing agent was investigated. Thermodynamic simulations demonstrated that the partially dissociated protons and amino carboxylate anions synergistically affect the dissolution of hemimorphite. The experimental results were consistent with the theoretical analyses. Under optimal conditions, the leaching extraction of zinc was above 88% and that of iron was below 4%. Furthermore, the complexing agent could be recovered from the leaching solution at the isoelectric point by adding dilute sulfuric acid.

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Acknowledgements

The authors acknowledge financial assistance from the National Basic Research Programme of China (No. 2014CB643404) and the National Natural Science Foundation of China (No. 51504292).

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Authors and Affiliations

  1. School of Metallurgy and Environment, Central South University, Changsha, 410083, People’s Republic of China

    Shuai Rao, Duchao Zhang, Tianzu Yang, Weifeng Liu, Lin Chen, Hongbin Ling & Xinwang Zhang

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  1. Shuai Rao
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  2. Duchao Zhang
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  3. Tianzu Yang
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  4. Weifeng Liu
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  5. Lin Chen
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  6. Hongbin Ling
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  7. Xinwang Zhang
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Correspondence to Tianzu Yang.

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Rao, S., Zhang, D., Yang, T. et al. Selective Extraction of Zinc from Refractory Hemimorphite Using Iminodiacetic Acid as a Complexing Agent. JOM 69, 1909–1913 (2017). https://doi.org/10.1007/s11837-017-2328-4

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  • DOI: https://doi.org/10.1007/s11837-017-2328-4

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