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Study on the pre-treatment of oxidized zinc ore prior to flotation

Abstract

The pre-treatment of zinc oxide bearing ores with high slime content is important to ensure that resources are utilized optimally. This paper reports an improved process using hydrocyclone de-sliming, dispersion reagents, and magnetic removal of iron minerals for the pre-treatment of zinc oxide ore with a high slime and iron content, and the benefits compared to traditional technologies are shown. In addition, this paper investigates the damage related to fine slime and iron during zinc oxide flotation, the necessity of using hydrocyclone de-sliming together with dispersion reagents to alleviate the influence of slime, and interactions among hydrocyclone de-sliming, reagent dispersion, and magnetic iron removal. Results show that under optimized operating conditions the entire beneficiation technology results in a flotation concentrate with a Zn grade of 34.66% and a recovery of 73.41%.

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Acknowledgements

This work was financially supported by the Natural Science Foundation of Hubei Province, China (No. 2014CFB794), the Young Fund of Wuhan Institute of Technology (No. Q201405), and the Natural Science Foundation of Hunan Province for International Cooperation and Innovation (Nos. 2017JJ4035 and 2016WK2049).

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Correspondence to Yun Chen.

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He, Ds., Chen, Y., Xiang, P. et al. Study on the pre-treatment of oxidized zinc ore prior to flotation. Int J Miner Metall Mater 25, 117–122 (2018). https://doi.org/10.1007/s12613-018-1554-2

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  • DOI: https://doi.org/10.1007/s12613-018-1554-2

Keywords

  • zinc oxide ores
  • flotation
  • hydrocyclone de-sliming
  • magnetic deferrization