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Gold Science and Technology ›› 2016, Vol. 24 ›› Issue (4): 144-148.doi: 10.11872/j.issn.1005-2518.2016.04.144

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WANG Yongliang1,LV Cuicui 1,2,XIAO Li 1,2,DING Jian 1,2,FU Guoyan 1,2,YE Shufeng 1   

  1. 1.State Key Laboratory of Multi-phase Complex System,Institute of Process Engineering,Chinese Academy of Sciences,Beijing    100190,China;
    2.University of Chinese Academy of Sciences,Beijing   100049,China
  • Received:2016-06-13 Revised:2016-07-06 Online:2016-08-28 Published:2016-11-17

Abstract:

Cyanide residue from one smelting plant is used to enrich the pyrite and remove a portion of the arsenic.With the use of sulphuric acid as sulfur activator,the sodium humate and calcium hypochlorite is used as the arsenopyrite combined inhibitor in the flotation experiment.The results show that the sulphur grade in sulfur concentrate is more than 48%,while the arsenic grade reduces to below 0.2%.The analysis means of SEM and XRD are taken to analyze the occurrence of arsenic in cyanide residues.And the reasons for the difficulty in separation of sulphur and arsenic in cyanide residues are discussed.

Key words: cyanide residue, flotation, pyrite enrich, arsenopyrite inhibitor

CLC Number: 

  • TF831

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