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Gold Science and Technology ›› 2014, Vol. 22 ›› Issue (4): 129-134.doi: 10.11872/j.issn.1005-2518.2014.04.129

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Research Progress of Pretreatment Technologies of Refractory Gold Ores

WANG Shuai1,2,LI Chao1,2,LI Hongxu1,2   

  1. 1.School of Metallurgical and Ecological Engineering,University of Science and Technology Beijng,Beijing   100083,China;
    2.Beijing Key Laboratory of Green Recovery and Extraction of Precious Metals,Beijing   100083,China
  • Received:2014-05-30 Revised:2014-06-27 Online:2014-08-28 Published:2014-12-24

Abstract:

With the increasingly exhausting of easily leachable gold,the applied proportion of refractory gold ores is growing larger.It is necessary to study and summarize pretreatment technologies of refractory gold ores and its development.Reasons why it is hard to leach out refractory gold ores were briefly analyzed,the pretreatment of refractory gold ores before the leaching is necessary.The pressurized oxidation method,roasting method,biological oxidation method,ultrafine grinding and the new pretreatment technologies of refractory gold ores were summarized.In addition,the advantages and disadvantages of each method were reviewed.The prospects and trends of their development were also discussed.

Key words: refractory gold ores, leaching efficiency, pressurized oxidation, biological pre-oxidation, magnetic pulse

CLC Number: 

  • TF831

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