期刊论文

Oxidation Mechanism of Pyrrhotite in Laboratory Conditions

Cai, M.-F.(mfcai@scies.com.cn)

中文

华南理工大学学报（自然科学版）

Journal of South China University of Technology(Natural Science Edition)

1000-565X

2005

33

11

10-14

10.3321/j.issn:1000-565X.2005.11.003

NaturalSciencesandEngineeringResearchCoun-cilofCanada,MaterialsandManufacturingOntarioCenterofExcellence； 广东省科技厅重大专项项目(2004A30308002)；

本校为其他机构

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.

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 pyrrhotite in air condition, that FeSO4, Fe2(SO4)3 and FeS2 are the main products of biological oxidation, and that the large amounts of Thiobacillus ferrooxidans existing in the tailings accelerates the weathering of pyrrhotite.