Behavior of Fe and S in bioleaching of pentlandite  

作　　者：张广积 方兆珩 

出　　处：《中国有色金属学会会刊：英文版》2002年第1期160-163,共4页Transactions of Nonferrous Metals Society of China

基　　金：Project ( 5 983415 0 )supportedbytheNationalNaturalScienceFoundationofChina

摘　　要：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 2.8?g/L Fe 3+ at 35?℃, and H + was released while Fe 3+ 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.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 2.8?g/L Fe 3+ at 35?℃, and H + was released while Fe 3+ 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.

关 键 词：生物过滤 镍黄铁矿 铁 硫 

分 类 号：TF114[冶金工程—冶金物理化学]