美国矿务局Rello研究中心预料用异养微生物从低品位的本地矿石中溶出锰的可能性。用糖蜜作微生物的营养源,在振荡烧瓶试验中,已从各种氧化矿石中萃取了90％以上的锰。同时,已用实验证明,用交换柱生物浸出法,可从本地锰土矿石中获得较高的锰回收率。讨论了可提取锰的有机体γ的分离与鉴别,作为负担溶解锰任务的机构。在烧瓶,交换柱和实验室规模的堆浸实验中,用糖蜜介质,生物浸出3种Kids低品位锰土矿石。在振荡烧瓶试验中,用5％ The Rello Research Center at the US Bureau of Mines is anticipating the possibility of leaching manganese from low-grade local ores with heterotrophic microorganisms. Using molasses as a nutrient source for microorganisms, more than 90% of the manganese has been extracted from various oxidized ores in oscillating flask tests. In the meantime, it has been experimentally proved that the bioleaching method using the exchange column can obtain higher manganese recovery rate from the local manganese ore. The isolation and identification of manganese-extractable organism gamma is discussed as a mechanism to undertake the task of dissolving manganese. In the flasks, exchange columns and lab-scale heap leaching experiments, three types of Kids low grade manganese ore were bioleached with molasses media. In a shaker flask test, a 5%