Rare Metals

, Volume 33, Issue 3, pp 363–368 | Cite as

Optimization and mechanism of gold-bearing sulfide flotation

  • Zhong-Mei Sun
  • Chun-Bao Sun
  • Ji-Zhen Wang
  • Wan-Zhong Yin
Article
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Accepted:

Abstract

In order to overcome the difficulty of extracting gold from gold-bearing sulfide ore by cyanide process, flotation was adopted based on mineralogical analysis. Mineralogy shows that gold particles are of superfine structure and mainly enclosed by sulfide ores. Primary gold-bearing sulfide ore is fine-grained pyrite and arsenopyrite. The paper describes the effects of ratios and dosage of activators and collectors on the recovery and grade of gold concentrate. A proper flotation flowsheet was then proposed based on experimental condition and closed-circuit test. The gold concentrate with the gold grade of 25.14 g·ton−1 and the recovery of 86.94 % is obtained after one rougher, three cleaners, and four scavengers from fine grinding flotation process. Furthermore, the mechanisms of combined activators and combined collectors were studied by thermodynamic calculation, and structure–activity relationship of flotation reagent was also explained.

Keywords

Gold Pyrite Arsenopyrite Activator Combined reagent Flotation 
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Notes

Acknowledgments

This study was financially supported by the Innovation project for Young Talents in Longyan, Fujian (No. 2013LY26).

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Copyright information

© The Nonferrous Metals Society of China and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Zhong-Mei Sun
    • 1
    • 2
  • Chun-Bao Sun
    • 1
  • Ji-Zhen Wang
    • 3
  • Wan-Zhong Yin
    • 4
  1. 1.School of Civil and Environmental EngineeringUniversity of Science and Technology BeijingBeijingChina
  2. 2.Zijin Research Institute of Mining and MetallurgyShanghangChina
  3. 3.School of Materials & MetallurgyNortheastern UniversityShenyangChina
  4. 4.College of Zi Jin MiningFuzhou UniversityFuzhouChina

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