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Volume 24 Issue 10
Oct.  2017
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文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(10): 1104-1111
Xiao-bin Qiu, Jian-kang Wen, Song-tao Huang, Hong-ying Yang, Mei-lin Liu, and Biao Wu, New insights into the extraction of invisible gold in a low-grade high-sulfur Carlin-type gold concentrate by bio-pretreatment, Int. J. Miner. Metall. Mater., 24(2017), No. 10, pp. 1104-1111. https://doi.org/10.1007/s12613-017-1501-7
Cite this article as:
Xiao-bin Qiu, Jian-kang Wen, Song-tao Huang, Hong-ying Yang, Mei-lin Liu, and Biao Wu, New insights into the extraction of invisible gold in a low-grade high-sulfur Carlin-type gold concentrate by bio-pretreatment, Int. J. Miner. Metall. Mater., 24(2017), No. 10, pp. 1104-1111. https://doi.org/10.1007/s12613-017-1501-7
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研究论文

New insights into the extraction of invisible gold in a low-grade high-sulfur Carlin-type gold concentrate by bio-pretreatment

  • National Engineering Laboratory of Biohydrometallurgy, General Research Institute for Nonferrous Metals, Beijing 100088, China

  • School of Metallurgy, Northeastern University, Shenyang 110819, China

  • 通讯作者:

    Jian-kang Wen    E-mail: kang3412@126.com

  • To extract gold from a low-grade (13.43 g/t) and high-sulfur (39.94wt% sulfide sulfur) Carlin-type gold concentrate from the Nibao deposit, Guizhou, a bio-pretreatment followed by carbon-in-pulp (CIP) cyanide leaching process was used. Various methods were used to detect the low-grade gold in the concentrate; however, only time-of-flight secondary-ion mass spectrometry (TOF-SIMS) was successful. With bio-pretreatment, the gold recovery rate increased by approximately 70.16% compared with that obtained by direct cyanide leaching of the concentrate. Various attempts were made to increase the final gold recovery rate. However, approximately 20wt% of the gold was non-extractable. To determine the nature of this non-extractable gold, mineralogy liberation analysis (MLA), formation of secondary product during the bio-pretreatment, and the preg-robbing capacity of the carbonaceous matter in the ore were investigated. The results indicated that at least four factors affected the gold recovery rate:gold occurrence, tight junctions of gold-bearing pyrite with gangue minerals, jarosite coating of the ore, and the carbonaceous matter content.
    • Research Article

    New insights into the extraction of invisible gold in a low-grade high-sulfur Carlin-type gold concentrate by bio-pretreatment

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      Abstract
    • To extract gold from a low-grade (13.43 g/t) and high-sulfur (39.94wt% sulfide sulfur) Carlin-type gold concentrate from the Nibao deposit, Guizhou, a bio-pretreatment followed by carbon-in-pulp (CIP) cyanide leaching process was used. Various methods were used to detect the low-grade gold in the concentrate; however, only time-of-flight secondary-ion mass spectrometry (TOF-SIMS) was successful. With bio-pretreatment, the gold recovery rate increased by approximately 70.16% compared with that obtained by direct cyanide leaching of the concentrate. Various attempts were made to increase the final gold recovery rate. However, approximately 20wt% of the gold was non-extractable. To determine the nature of this non-extractable gold, mineralogy liberation analysis (MLA), formation of secondary product during the bio-pretreatment, and the preg-robbing capacity of the carbonaceous matter in the ore were investigated. The results indicated that at least four factors affected the gold recovery rate:gold occurrence, tight junctions of gold-bearing pyrite with gangue minerals, jarosite coating of the ore, and the carbonaceous matter content.
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      • References(19)
    • [1]
      P.M. Afenya, Treatment of carbonaceous refractory gold ores, Miner. Eng., 4(1991), No. 7-11, p. 1043.
      [2]
      K. Nyavor and N.O. Egiebor, Application of pressure oxidation pretreatment to a double-refractory gold concentrate, CIM Bull., 85(1992), No. 956, p. 84.
      [3]
      W.C. Su, H.T. Zhang, R.Z. Hu, X. Ge, B. Xia, Y.Y. Chen, and C. Zhu, Mineralogy and geochemistry of gold-bearing arsenian pyrite from the Shuiyindong Carlin-type gold deposit, Guizhou, China:implications for gold depositional processes, Miner. Deposita, 47(2012), No. 6, p. 653.
      [4]
      W.C. Su, C.A. Heinrich, T. Pettke, X.C. Zhang, R.Z. Hu, and B. Xia, Sediment-hosted gold deposits in Guizhou, China:products of wall-rock sulfidation by deep crustal fluids, Econ. Geol., 104(2009), No. 1, p. 73.
      [5]
      W.C. Su, B. Xia, H.T. Zhang, X.C. Zhang, and R.Z. Hu, Visible gold in arsenian pyrite at the Shuiyindong Carlin-type gold deposit, Guizhou, China:implications for the environment and processes of ore formation, Ore Geol. Rev., 33(2008), No. 3-4, p. 667.
      [6]
      A.H. Kaksonen, B.M. Mudunuru, and R. Hackl, The role of microorganisms in gold processing and recovery-A review, Hydrometallurgy, 142(2014), p. 70.
      [7]
      J.A. Brierley, A perspective on developments in biohydrometallurgy, Hydrometallurgy, 94(2008), No. 1-4, p. 2.
      [8]
      W.J. Luo, H.Y. Yang, X.M. Qiu, and H.J. Li, Bacterial oxidation and cyanide leaching process for carbonaceous Carlin-type gold deposit, J. Northeast. Univ. Nat. Sci., 35(2014), No. 11, p. 1579.
      [9]
      X.B. Qiu, J.K. Wen, B. Wu, L.C Zou, M.L. Liu, and H. Shang, Biooxidation pretreatment of high sulfur high clay Carlin-type gold concentrates containing arsenic and carbon, Chin. J. Rare Met., 37(2013), No. 5, p. 783.
      [10]
      H.Y. Yang, Q. Liu, X.L. Song, and J.K. Dong, Research status of carbonaceous matter in carbonaceous gold ores and bio-oxidation pretreatment, Trans. Nonferrous Met. Soc. China, 23(2013), No. 11, p. 3405.
      [11]
      H. Tan, D. Feng, G.C. Lukey, and J.S.J. van Deventer, The behaviour of carbonaceous matter in cyanide leaching of gold, Hydrometallurgy, 78(2005), No. 3-4, p. 226.
      [12]
      R.K. Amankwah, W.T. Yen, and J.A. Ramsay, A two-stage bacterial pretreatment process for double refractory gold ores, Miner. Eng., 18(2005), No. 1, p. 103.
      [13]
      G. Ofori-Sarpong, K. Osseo-Asare, and M. Tien, Mycohydrometallurgy:Biotransformation of double refractory gold ores by the fungus, Phanerochaete chrysosporium, Hydrometallurgy, 137(2013), p. 38.
      [14]
      Q. Liu, H.Y. Yang, L.L. Tong, Z.N. Jin, and W. Sand, Fungal degradation of elemental carbon in carbonaceous gold ore, Hydrometallurgy, 160(2016), p. 90.
      [15]
      H. Shang, J.K. Wen, B. Wu, M.L. Liu, and G.C. Yao, Bio-pretreatment and cyanide leaching for arsenic carbonaceous refractory gold ores, Chin. J. Rare Met., 36(2012), No. 6, p. 947.
      [16]
      R. Dunne, K. Buda, M. Hill, W. Staunton, G. Wardelljohnson, and V. Tjandrawan, Assessment of options for economic processing of preg-robbing gold ores,[in] World Gold Conference 2007, Cairns, 2007, p. 205.
      [17]
      M. Helm, J. Vaughan, W.P. Staunton, and J. Avraamides, An investigation of the carbonaceous component of preg-robbing gold ores,[in] World Gold Conference 2009, Johannesburg, 2009, p. 139.
      [18]
      G. Ofori-Sarpong, R.K. Amankwah, and K. Osseo-Asare, Reduction of preg-robbing by biomodified carbonaceous matter⎯A proposed mechanism, Miner. Eng., 42(2013), p. 29.
      [19]
      Z.J. Xing, J.C. Gao, P. Liu, F. Yang, and C.R. Yang, Spectral characterization of carbonaceous matter in gold ores of Zhenyuan gold mine and study on their bio-oxidation property, Gold, 36(2015), No. 1, p. 46.
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