Oxidation Mechanism of Pyrrhotite in Laboratory Conditions

Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (11): 10-14.

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Oxidation Mechanism of Pyrrhotite in Laboratory Conditions

Cai Mei-fang Dang Zhi

College of Environmental Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China

Received:2005-01-24 Online:2005-11-25 Published:2005-11-25
Contact: 蔡美芳(1977-)，女，博士生，主要从事矿区环境污染与防治的研究 E-mail:mfcai@scies.com.cn
About author:蔡美芳(1977-)，女，博士生，主要从事矿区环境污染与防治的研究
Supported by:
Natural Sciences and Engineering Research Coun-cil of Canada．Materials and Manufacturing Ontario Center of Excellence；广东省科技厅重大专项项目(2004A30308002)

Abstract

Abstract:

In order to control the production of acid mine drainage(AMD)on source,the weathering process of pyrrhotite in natural conditions was simulated in laboratory.The mechanism of AMD production and corresponding affecting factors were then determined.Experimental results show that FeSO₄,Fe₂(SO₄)₃ and FeO(OH)are the oxidation products of pyrhotite in air condition,that FeSO₄,Fe₂(SO₄)₃ and FeS₂ are the main products of biologi.cal oxidation,and that the large amounts of Thiobacillus ferrooxidans existing in the tailings accelerates the weathe-ring of pyrhotite.

Key words: pyrhotite, oxidation, Thiobacillus ferrooxidans, acid mine drainage

Cai Mei-fang Dang Zhi. Oxidation Mechanism of Pyrrhotite in Laboratory Conditions[J]. Journal of South China University of Technology (Natural Science Edition), 2005, 33(11): 10-14.

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Oxidation Mechanism of Pyrrhotite in Laboratory Conditions

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