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  • CN 62-1112/TF 
  • ISSN 1005-2518 
  • 创刊于1988年
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冶炼技术与装备研发

氯离子对载金黄铁矿生物氧化的影响

  • 梁长利 ,
  • 覃文庆 ,
  • 陈景河 ,
  • 杨杭渠 ,
  • 衷水平
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  • 1.紫金矿业集团股份有限公司低品位难处理黄金资源综合利用国家重点实验室,福建  上杭   364200;
    2.江西理工大学资源与环境工程学院,江西  赣州   341000;
    3.中南大学资源与生物工程学院,湖南  长沙   410083
梁长利(1975-),男,陕西西安人,讲师,从事生物冶金和矿物加工研究工作。lclwind@163.com

收稿日期: 2015-06-08

  修回日期: 2015-07-19

  网络出版日期: 2015-11-16

Influence of Chloride Ion on the Biooxidation of Gold-containing Pyrite

  • LIANG Changli ,
  • QIN Wenqing ,
  • CHEN Jinghe ,
  • YANG Hangqu ,
  • ZHONG Shuiping
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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.Jiangxi Key Laboratory of  Mining Engineering,Jiangxi University of  Science and Technology,Ganzhou   341000,Jiangxi,China;
    3.School of  Minerals Processing and Bioengineering,Central South University,Changsha    410083,Hunan,China

Received date: 2015-06-08

  Revised date: 2015-07-19

  Online published: 2015-11-16

摘要

研究了Cl-对载金黄铁矿生物氧化和生物氧化过程形成产物的影响。结果发现,0.01 mol/L Cl-对载金黄铁矿生物氧化具有显著的促进作用;而当Cl-浓度>0.04 mol/L时,由于高浓度Cl-抑制了微生物的生长,进而抑制了载金黄铁矿的生物氧化。XRD分析结果表明,载金黄铁矿生物氧化过程中形成了单质硫,Cl-的加入有效消除了单质硫在矿物表面的累积。Cl-的促进作用主要是它可以消除阻碍载金黄铁矿生物氧化的单质硫在矿物表面的累积。

本文引用格式

梁长利 , 覃文庆 , 陈景河 , 杨杭渠 , 衷水平 . 氯离子对载金黄铁矿生物氧化的影响[J]. 黄金科学技术, 2015 , 23(4) : 86 -90 . DOI: 10.11872/j.issn.1005-2518.2015.04.086

Abstract

The influence of chloride ion on the biooxidation of gold-containing pyrite and the formation of products were studied in this work.Biooxidaiton results showed that the addition of 0.01 mol/L chloride ion has significantly promotion action on the oxidation dissolution of gold-containing pyrite,while it has inhibition action on the biooxidation of gold-containing pyrite for it can inhibit the growth of the microorganisms when the concentration of chloride ion is higher than 0.04 mol/L.XRD analysis showed the formation of elemental sulfur on the surface of the ore when the chloride ion is in the absence of the biooxidation,while the presence of chloride ion can effectively eliminate the accumulation of elemental sulfur on the ore surface.The promotion action of chloride ion should mainly for it can eliminate the accumulation of elemental sulfur,which hamper the biooxidation of gold-containing pyrite.

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