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  • ISSN 1005-2518 
  • Founded in 1988
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Extraction of Gold from Refractory Gold Concentrate by Roasting-Cyanide Leaching

  • WU Zhi ,
  • HUANG Zhongsheng ,
  • ZANG Hong ,
  • ZHONG Shuiping ,
  • WU Zengling
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  • 1.State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores,Zijin Mining Group Co.,Ltd.,Shanghang   364200,Fujian,China;
    2.College of Zijin Mining,Fuzhou University,Fuzhou   350116,Fujian,China

Received date: 2014-07-28

  Revised date: 2014-09-05

  Online published: 2015-01-14

Abstract

Focusing on the refractory gold concentrate in northwest region,the technology of roasting-cyanidation was studied and the optimized condition was obtained.Experimentation results show that the removal rate of  S and As are 99.99% and 52.56% respectively,and the gold leaching rate is above 88.92% under these conditions:-0.043 mm was about 52.85%,the one stage roasting with the temperature of  450 ℃ and  time of 1 hour,two stages roasting with the temperature of 700 ℃ and time of 0.5 hour.The best cyanide-leaching parameters are initial densities of sodium cyanide is 0.5‰,the liquid-solid ratio is 4 and time of 24 hours.

Cite this article

WU Zhi , HUANG Zhongsheng , ZANG Hong , ZHONG Shuiping , WU Zengling . Extraction of Gold from Refractory Gold Concentrate by Roasting-Cyanide Leaching[J]. Gold Science and Technology, 2014 , 22(6) : 77 -81 . DOI: 10.11872/j.issn.1005-2518.2014.06.077

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