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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 1    February 2002

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Behavior of Fe and S in bioleaching
of pentlandite
ZHANG Guang-ji(张广积),FANG Zhao-heng(方兆珩)

Institute of Chemical Metallurgy,The Chinese Academy of Science,
Beijing 100080,China

Abstract:The reaction behavior of Fe and S in bioleaching of pentlandite with Thiobacillus ferrooxidans was investigated. The results of leaching experiments and XRD pattern show that pentlandite can not be oxidized easily by 2.8g/L Fe3+ at 35℃,and H+<, /SUP> was released while Fe3+ precipitates to form jarosite.Bacteria oxidize the sulfide in the mineral to produce element sulfur, meanwhile, H+ in the solution is consumed and this process results in pH value increasing about 0.3 everyday in the solution,and this process is supported by SEM morphology and EDS patterns.

 

Key words: pentlandite;bioleaching;Fe;S

ISSN 1672-7029
CN 43-1423/U

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