Selective Extraction of Cobalt, Manganese and Zinc from the Filter Cake of the Zinc Processing Plant

Document Type : Research - Paper

Authors

1 M.Sc, Dept. of Chemical Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran

2 Assistant Professor, Dept. of Materials Science and Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran

3 Assistant Professor, Dept. of Materials, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran

4 Associate Professor, Dept. of Chemical Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran

Abstract

In the electrolytic extraction of zinc, the filter cake of the hot filtration process contains zinc, manganese, and cobalt. In this study, the metals were extracted by using two selective leaching steps. The results showed that at pH = 1 and 90 °C, about 88% of zinc was recovered without cobalt and manganese. In the selective leaching stage, cobalt was significantly extracted (91%) by adding hydrogen peroxide (H2O2) to the acidic leaching solution at pH <1. By reprecipitation of the extracted cobalt and selective leaching with H2O2, the solution containing cobalt ions with high purity was obtained.

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References

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History

  • Receive Date: 30 August 2020
  • Revise Date: 11 January 2021
  • Accept Date: 11 January 2021

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