Behavior of Fe and S in bioleaching of pentlandite
来源期刊：中国有色金属学报(英文版)2002年第1期
论文作者：张广积 方兆珩
文章页码：160 - 163
Key words：pentlandite;bioleaching;Fe;S
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+ 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.
