华南理工大学学报(自然科学版) ›› 2005, Vol. 33 ›› Issue (11): 10-14.

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实验室条件下磁黄铁矿的氧化机理

蔡美芳 党志   

  1. 华南理工大学 环境科学与工程学院,广东 广州 510640
  • 收稿日期:2005-01-24 出版日期:2005-11-25 发布日期:2005-11-25
  • 通信作者: 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
  • 作者简介:蔡美芳(1977-),女,博士生,主要从事矿区环境污染与防治的研究
  • 基金资助:

    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)

Oxidation Mechanism of Pyrrhotite in Laboratory Conditions

Cai Mei-fang  Dang Zhi   

  1. 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)

摘要: 为了从源头上控制矿区酸性废水的产生,在实验室模拟了自然条件下磁黄铁矿的风化过程,确定了酸性废水的产生机理和影响因子.实验结果表明:磁黄铁矿在空气中的氧化产物为FeSO4 ,Fe2 (SO4 ) 3和FeO(OH);生物氧化的产物主要为FeSO4 ,Fe2 (SO4 )3 和FeS2:,尾矿堆大量存在的氧化亚铁硫杆菌能加速磁黄铁矿的风化过程.

关键词: 磁黄铁矿, 氧化, 氧化亚铁硫杆菌, 酸性矿山废水

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