某低Au/S比难处理金精矿连续生物氧化—提金中试研究

doi:10.11872/j.issn.1005-2518.2014.04.099

Gold Science and Technology ›› 2014, Vol. 22 ›› Issue (4): 99-102.doi: 10.11872/j.issn.1005-2518.2014.04.099

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Research on Bacterial Continuous Preoxidation-cyaniding Pilot Process for Low Au/S Ratio Refractory Gold Concentrates Ores

HUANG Zhongsheng^1，2，WANG Chun^1，2，HE Dengping³，WU Zengling^1，2，ZHONG Shuiping^1，2

1.Zijin Mining Group Co.，Ltd.，Shanghang   364200，Fujian，China；
2.State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores，Shanghang   364200，Fujian，China；
3.Longnan Zijin Mining Co.，Ltd.，Lixian   742208，Gansu，China

Received:2014-05-18 Revised:2014-06-22 Online:2014-08-28 Published:2014-12-24

Abstract

Abstract:

The continuous prebiooxidation-cyaniding pilot experiments were carried out based on the previous experimental studies for pretreatment of a low Au/S ratio refractory gold concentrates， impact of process technology parameters for subsequent cyanide leaching rate also was studied.The results show that the oxidation ratio of sulfide is 81.44% and the gold extraction in the cyanidation can reach 93% after 7 days when the pulp density is 15%，with agitation speed of 50 rpm，temperature of 45 ℃and the dissolved oxygen of 2 mg/L.

Key words: refractory gold concentrates ores, low Au/S ratio, bacterial preoxidation, pilot study

CLC Number:

TF831

HUANG Zhongsheng，WANG Chun，HE Dengping，WU Zengling，ZHONG Shuiping. Research on Bacterial Continuous Preoxidation-cyaniding Pilot Process for Low Au/S Ratio Refractory Gold Concentrates Ores[J].Gold Science and Technology, 2014, 22(4): 99-102.

References

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［3］ James K A.Microbial pre-treatment of double refractory gold ores［D］.Ontario：Queen’s University Kingston，2008.
［4］黄中省，伍赠玲，邹刚，等.低品位难处理金矿生物氧化—氰化提金实试验研究［J］.有色冶金设计与研究，2012，33 （2）：1-4.
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