Skip to main content
SpringerLink
Log in

Intensification of Gold Leaching from a Multi-refractory Gold Concentrate by the Two-Stage Roasting—Alkaline Sulfide Washing—Cyanidation Process

  • Conference paper
  • First Online:
8th International Symposium on High-Temperature Metallurgical Processing

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

The cyanide leaching rate of gold from a multi-refractory gold concentrate (18.05 g/t Au) containing 1.62% As, 20.76% S, 6.95% C and 1.31% Sb was only 1.33%. The enhancement of gold leaching was studied mainly by the pretreatment of oxidative roasting and alkaline sulfide washing. Results showed that after the two-stage roasting (i.e., I stage of 500 °C, 1 h and II stage of 700 °C, 2 h) most of sulfur (93.84%) and carbon (98.27%) were removed, but the gold leaching rate of calcine just reached 71.33% because the residual arsenic (0.63%) and antimony (1.15%) were still high. After alkaline sulfide (i.e., NaOH and Na2S) washing, the residual arsenic and antimony was further decreased to 0.21 and 0.65%, respectively. The gold leaching rate of the treated calcine by cyanidation could increase to 93.52% substantially. Also, the optimized particle size, NaCN concentration and leaching time were −0.045 mm over 85%, 0.1% and 36 h, respectively.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Log in via an institution

Institutional subscriptions

References

  1. G. Xue, W. Ren, Y. Xu, Hydrometallurgy and Analysis Testing Process of Gold and Silver (Science Press, Beijing, 2009)

    Google Scholar 

  2. G. Gao et al., Kinetics of high-sulphur and high-arsenic refractory gold concentrate oxidation by dilute nitric acid under mild conditions. Miner. Eng. 22(22), 111–115 (2009)

    Article  Google Scholar 

  3. Q. Li, D. Li, F. Qian, Pre-oxidation of high-sulfur and high-arsenic refractory gold concentrate by ozone and ferric ions in acidic media. Hydrometallurgy 97(1), 61–66 (2009)

    Article  Google Scholar 

  4. J.H. Kyle et al., Review of trace toxic elements (Pb, Cd, Hg, As, Sb, Bi, Se, Te) and their deportment in gold processing: part II: deportment in gold ore processing by cyanidation. Hydrometallurgy, s 111–112(1), 10–21 (2012)

    Article  Google Scholar 

  5. S. Ubaldini et al., Process flow-sheet for gold and antimony recovery from stibnite. Hydrometallurgy 57(3), 187–199 (2000)

    Article  Google Scholar 

  6. T. Jiang, Chemistry of Extractive Metallurgy of Gold (Hunan Science and Technology Press, Changsha, 1998)

    Google Scholar 

  7. G. Senanayake, A review of effects of silver, lead, sulfide and carbonaceous matter on gold cyanidation and mechanistic interpretation. Hydrometallurgy 90(1), 46–73 (2008)

    Article  Google Scholar 

  8. P. Raschman, E. Sminčáková, Kinetics of leaching of stibnite by mixed Na2S and NaOH solutions. Hydrometallurgy, s 113–114(3), 60–66 (2012)

    Article  Google Scholar 

  9. C. Nunez, A. Roca, Recovery of gold and silver from a gossan type ore by a pre-sulphated process. Trans. Inst. Min. Metall. Sect. C 95, 195–198 (1986)

    Google Scholar 

  10. M.D. Adams, A.M. Burger, Characterization and blinding of carbonaceous preg-robbers in gold ores. Miner. Eng. 11(10), 919–927 (1998)

    Article  Google Scholar 

  11. J. Hu, Research on the process of roasting pretreatment-cyanide extracting Au from sulfide-bearing refractory gold concentrate containing arsenic and high-carbon. Master thesis, Central South University, 2015, pp. 27–29

    Google Scholar 

  12. T. Fujita et al., Environmental leaching characteristics of scorodite synthesized with Fe(II) ions. Hydrometallurgy, s 111–112(1), 87–102 (2012)

    Article  Google Scholar 

  13. M. Stoychevski, Recovery of gold from As-bearing pyrite minerals whether or not roasted (1994)

    Google Scholar 

Download references

Acknowledgements

This work was financially supported by National Natural Science Foundation of China (Grant No. 51574284), National Science Foundation for Distinguished Young Scholars of China (Grant No. 51504293) and Science and Technology Program of Yunnan (No. 2013IB020).

Author information

Authors and Affiliations

  1. School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, Hunan, People’s Republic of China

    Qian Li, Yan Zhang, Xishan Li, Bin Xu, Yongbin Yang, Tao Jiang & Hongwei Li

Authors
  1. Qian Li
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yan Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Xishan Li
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Bin Xu
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Yongbin Yang
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Tao Jiang
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. Hongwei Li
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Yan Zhang .

Editor information

Editors and Affiliations

  1. Michigan Technological University , Houghton, Michigan, USA

    Jiann-Yang Hwang

  2. Central South University , Changsha, Hunan, China

    Tao Jiang

  3. Proval Partners SA , Lausanne, Switzerland

    Mark William Kennedy

  4. Istanbul Technical University , Istanbul, Turkey

    Onuralp Yücel

  5. Dept of Materials Science and Eng, Carnegie Mellon Univ Dept of Materials Science and Eng, Pittsburgh, Pennsylvania, USA

    P. Chris Pistorius

  6. Universidade Federal de Minas Gerais , Belo Horizonte, Brazil

    Varadarajan Seshadri

  7. The University of Queensland , Brisbane, Australia

    Baojun Zhao

  8. RHI AG , Leoben, Austria

    Dean Gregurek

  9. Atilim University , Ankara, Turkey

    Ender Keskinkilic

Rights and permissions

Reprints and permissions

Copyright information

© 2017 The Minerals, Metals & Materials Society

About this paper

Cite this paper

Li, Q. et al. (2017). Intensification of Gold Leaching from a Multi-refractory Gold Concentrate by the Two-Stage Roasting—Alkaline Sulfide Washing—Cyanidation Process. In: Hwang, JY., et al. 8th International Symposium on High-Temperature Metallurgical Processing. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51340-9_44

Download citation

Publish with us

Policies and ethics

Search

Navigation