微生物催化还原浸出深海锰结核中有价金属

在常温、酸性、厌氧环境下,按一定的比例添加微生物培养基和供电子体,采用J13菌连续高密度培养、矿浆预浸、微生物固定和强化传质的手段,提高微生物浸出结核中有价金属的速率,浸出时间为3 d,可直接浸出结核中的铜、钴、镍和锰.浸出率:钴95.2%,镍97.5%,锰95.8%,铜81.2%;按此方法进行了陆地软锰矿和硬锰矿的浸出试验,浸出时间9 d,锰矿中的锰浸出率较高.根据以上试验结果提出了微生物催化两矿偶合还原浸出氧化锰矿中有价金属的方法,并初步探索了浸出机理.

Microbe Catalysis the Oxidation- reduction Reaction to Leach Mn from MnO2 in the Manganese Nodules

The experiment indicates that under general temperature, acid and anaerobic condition, adding rational nutrient and electron supplier, with J13 bacteria from mining water adopting consequent culture in high density, pulp leaching in advance, microbe immobilization and enhance energy transmitting, which the leaching time is 3 days. The rate of metal leaching is Co 95.2%, Ni 97.5%, Mn 95.8%, Cu 81.2%. The same experiment was carried out on land magnetic ores, the leaching time is 9 days. Thus, a new method is set up that under the enforce bacteria of two ores are coupled and reduced to leach the valuable metals from oxide manganese ore.