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Gold Science and Technology ›› 2013, Vol. 21 ›› Issue (5): 67-70.

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Comprehensive Recovery of Copper，Gold and Sulfide from Copper-Gold Concentrates Using Wet Method with Ultra-fine Grinding Technology

ZHANG Wenbo1，DONG Changping2，CHEN Qinggen1，LI Xiaowei1   

  1. 1.Xiamen Zijin Mining and Metallurgy Technology Co.，Ltd.，Xiamen   361101，Fujian，China；
    2.Huichun Zijin Mining Co.，Ltd.，Huichun   133300，Jilin，China
  • Received:2013-06-07 Revised:2013-08-05 Online:2013-10-28 Published:2014-04-02

Abstract:

As the impact of the copper and the chalcopyrite and pyrite inclusions of gold，the copper-gold concentrate which is the output of a mining flotation was cyanided directly，and the recoveries of gold and copper were very low.Although the problem  can be solved by using pyrometallurgical processes dealing with the concentrates，but that cause environmental pollution and other issues.The copper-gold concentrate comprehensive recovery process was studied，which extracting copper from copper-gold concentrate using the process of ultra-fine grinding-hot leaching-extraction-electrowinning，extracting gold from leach residue using sodium thiosulfate method，recovering elemental sulfur using kerosene dissolved.The process has a lot of advantages，such as high recovery of valuable metals and environment friendly.The recovery rate of copper，gold and sulfur are up to 95%，98% and 99% respectively.

Key words: ultra-fine grinding technology, hot leaching, hydrometallurgical, copper-gold concentrate

CLC Number: 

  • TF831

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