北京科技大学学报2011，Vol.33Issue(6)：682-687,6.
石英对微生物浸出黄铜矿的作用
Effect of quartz on bioleaching of chalcopyrite
摘要
Abstract
In order to clarify the function of quartz in chalcopyrite bioleaching, quartz with particle sizes less than 43 μm was used to prepare a slurry system with chalcopyrite and pyrite for studying the effect of the mass concentration of quartz on the bioleaching efficiency of chalcopyrite. It is shown that the bioleaching of chalcopyrite can be improved by the addition of proper amount of quartz with finer particle sizes. Under the addition of 50 g· L - 1 quartz whose particle size was less than 43 μm, the largest leaching rate of chalcopyrite is 54.09％. Based on the analysis of oxidation-reduction potential, pH values, Fe2+ and Fe3+ mass concentrations and the resuits of scanning electron microscopy and energy dispersive spectroscopy, quartz benefits the bioleaching of chalcopyrite, and this phenomenon mainly presents a decrease of bioleaching delay time. Moreover, new precipitates generated in the leaching process can be adsorbed by quartz, which reduces the hindrance of precipitation during chalcopyrite bioleaching.关键词
黄铜矿/黄铁矿/生物浸出/细菌/石英Key words
chalcopyrite/ pyrite/ bioleaching/ bacteria/ quartz分类
矿业与冶金引用本文复制引用
莫晓兰,林海,董颖博,傅开彬,徐承焱..石英对微生物浸出黄铜矿的作用[J].北京科技大学学报,2011,33(6):682-687,6.基金项目
北京市教育委员会共建项目建设计划资助项目(No.XK100080432) （No.XK100080432）
