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用异养微生物生物浸出红土镍矿石印度奥里萨邦的Sukinda的镍铁江土矿石是一种极细颗粒的复杂矿石,已用从同样矿石分离出来的土生微生物群落进行浸镍试验.观测到从红土镍矿中提取90%镍和34%钴.为了提高提镍率,生长介质中的葡萄糖百分比由2%上升至10%.也用有机酸如草酸和柠檬酸以及微生物代谢作用产生的酸浸出.结果与微生物浸出作了比较.结果证明,用草酸和柠檬酸的化学浸出法从红土镍矿石中提取有价金属比生物代谢作用更有效.用1M草酸可提取6.66%镍.对比而言,微生物生长的有机代谢作用只可溶解少量镍,即使在高温下,用微生物比未用培养物能获得更多的镍.
Lithotite nickel ore leaching with heterotrophic microorganisms Sukinda nickel iron ore from Orissa, India, is a very finely divided, complex ore that has been subjected to a nickel immersion test using indigenous microbial communities isolated from the same ore 90% of nickel and 34% of cobalt are extracted from lateritic nickel ore and the percentage of glucose in the growth medium is increased from 2% to 10% in order to increase the nickel yield. The acids also produced from the metabolism of organic acids such as oxalic acid and citric acid and microorganisms Leaching.The results were compared with the leaching of microorganisms.The results showed that the chemical leaching method of oxalic acid and citric acid from laterite nickel ore was more effective than the biological metabolism.The extraction of 6.66% , The organic metabolism of microbial growth can only dissolve a small amount of nickel, even though at higher temperatures, more nickel can be obtained with microorganisms than with unused cultures.