Research on the Chloride Ions&rsquo; Effect on the Bacteria Pre-oxidation Process of Arsenic-containing Gold Concentrates

YANG Wei; LIU Ruiqiang; REN Yunchao

doi:10.11872/j.issn.1005-2518.2014.04.093

Gold Science and Technology >

2014 , Vol. 22 >Issue 4: 93 - 98

DOI: https://doi.org/10.11872/j.issn.1005-2518.2014.04.093

Research on the Chloride Ions’ Effect on the Bacteria Pre-oxidation Process of Arsenic-containing Gold Concentrates

YANG Wei ,
LIU Ruiqiang ,
REN Yunchao

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1.College of Materials & Mineral Resources，Xi’an University of Architecture and Technology，Xi’an   710055，Shaanxi，China；
2.The Refinery of Shandong Gold Mining Co.，Ltd.，Laizhou   261441，Shandong，China；
3.Engineering Design & Research Co.，Ltd.，Shandong Gold Group，Yantai   264006，Shandong，China

Received date: 2014-06-18

Revised date: 2014-07-04

Online published: 2014-12-24

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Abstract

The paper mainly studies the pre-oxidation process of bacteria of Arsenic-containing gold concentrates under different chloride ion concentrations.The results show that TCJ bacteria can adapt to the changes of water quality in water-head sources to meet the production requirements.On the present producing conditions，the critical value of TCJ bacterial tolerance concentration of chloride ions is 2.7 g/L.The experiment shows that the adaptability and the extent of tolerance of bacteria on Cl^－ is different in different raw materials and leaching system.Appropriate chloride ion is conducive to bacterial oxidation to some extent，while high chloride ions will inhibit bacterial activity and affect the pre-oxidation effect.

Key words： microbial metallurgy; arsenic-containing gold concentrate; pre-oxidation; bacterial adaptation; critical concentration; Thiobacillus ferrooxidans

Cite this article

YANG Wei , LIU Ruiqiang , REN Yunchao . Research on the Chloride Ions’ Effect on the Bacteria Pre-oxidation Process of Arsenic-containing Gold Concentrates[J]. Gold Science and Technology, 2014 , 22(4) : 93 -98 . DOI: 10.11872/j.issn.1005-2518.2014.04.093

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