| 不同成因类型黄铜矿细菌浸出钝化 |
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| 引用本文： | 傅开彬,林海,莫晓兰,董颖博,汪涵.不同成因类型黄铜矿细菌浸出钝化[J].中南大学学报(自然科学版),2011,42(11). |
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| 作者姓名： | 傅开彬 林海 莫晓兰 董颖博 汪涵 |
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| 作者单位： | 北京科技大学土木与环境工程学院,北京,100083 |
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| 基金项目： | 北京市教育委员会共建项目建设计划资助项目 |
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| 摘 要： | 利用嗜酸氧化亚铁硫杆菌为浸矿菌种,采用SEM,XRD和XPS等手段研究2种不同成因类型黄铜矿(黄铁矿型和斑岩型)表面钝化机理.研究结果表明:2种类型黄铜矿表面形成的钝化层性质不同.黄铁矿型黄铜矿浸渣中产生S8和硫砷铜矿,其表面结构疏松；而斑岩型黄铜矿浸渣中出现Cu18.32Fe15.9S32和Cu2S,表面结构致密.黄铁矿型黄铜矿浸渣表面阻碍层为硫及其多聚物,斑岩型黄铜矿浸渣表面为富铜贫铁层.它们阻碍黄铜矿的继续浸出,且富铜贫铁层对黄铜矿的钝化能力强于硫层对黄铜矿的钝化能力.
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| 关 键 词： | 黄铁矿型黄铜矿 斑岩型黄铜矿 细菌浸出 硫层 富铜贫铁层 |
Passivation of different genetic types of chalcopyrite bioleaching |
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| FU Kai-bin,LIN Hai,MO Xiao-lan,DONG Ying-bo,WANG Han.Passivation of different genetic types of chalcopyrite bioleaching[J].Journal of Central South University:Science and Technology,2011,42(11). |
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| Authors: | FU Kai-bin LIN Hai MO Xiao-lan DONG Ying-bo WANG Han |
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| Institution: | FU Kai-bin,LIN Hai,MO Xiao-lan,DONG Ying-bo,WANG Han (School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China) |
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| Abstract: | The passivation of chalcopyrite of two different genetic types(the pyritic and the porphyry) in the presence of Acidithiobacillus ferrooxidans was investigated by scanning electron microscopy(SEM),X-ray diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).The results show that the passivation layers on the surface of two types of chacolpyrite have distinct nature.From the XRD spectra and SEM micrograph,the layer with loose structure can be observed on the outer surface of the pyritic chalcopyrite resi... |
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| Keywords: | pyritic chalcopyrite porphyry chalcopyrite bio-leaching sulphur layer copper-rich iron-deficient surface layer |
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