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Study on removing zinc from nickel electrolyte by ion-exchange

  • Metallurgical Separation Science And Engineering
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Abstract

In the process of nickel production by diaphragm electrolysis, the quality of the product has been tremendously affected by the content of zinc in the nickel electrolyte. Removing zinc from nickel electrolyte by ion-exchange is studied in the paper. Resin D201 is selected as the resin for zinc removing. Effects of the operative parameters, such as temperature, pH value and the contact time on zinc adsorption are observed and the desorption feature of the zinc-loaded resin is inspected. The results show that macroporous anion-exchange resin D201 has excellent adsorption and desorption properties. Its breakthrough capacity and saturation capacity in zinc adsorption reach 0.81 g/L of zinc and 1.16 g/L of zinc respectively, when the operative temperature is 60 °C and the contact time is only 5 min. In addition, compared with gel type IER 201 × 7 used industrially nowadays, this resin has better wearability and greater intensity.

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References

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Authors and Affiliations

  1. Metallurgical Separation Science and Engineering Lab, Central South University, 410083, Changsha, China

    Zhang Gui-qing, Zhang Qi-xiu, Xiao Lian-sheng & Gong Bo-fan

Authors
  1. Zhang Gui-qing
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  2. Zhang Qi-xiu
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  3. Xiao Lian-sheng
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  4. Gong Bo-fan
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Additional information

Foundation item: The Key Program of the 10th Five-year Plan of Jinchuan Nonferrous Metals Company(No.2000.1)

Biography of the first author: ZHANG Gui-qing, Ph.D. candidate, born in Sept. 1969, majoring in separation science and engineering in metallurgy, extraction metallurgy of rare metals.

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Zhang, Gq., Zhang, Qx., Xiao, Ls. et al. Study on removing zinc from nickel electrolyte by ion-exchange. J Cent. South Univ. Technol. 7, 194–197 (2000). https://doi.org/10.1007/s11771-000-0052-6

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  • DOI: https://doi.org/10.1007/s11771-000-0052-6

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