微生物浸出深海多金属结核中有价金属

Bio-leaching Valuable Metals from Multimetallic Nodules in the Deep Sea Bed

对氧化亚铁硫杆菌浸出深海多金属结核中有价金属的可行性进行了实验，着重研究 了矿浆浓度、接种量、温度、浸出过程中ｐＨ值对结核中有价金属钴和镍浸出率的影响，同时对 氧化亚铁硫杆菌进行了驯化．实验表明：采用Ｌｅａｔｈｅｎ培养基，加入适量黄铁矿作为菌种的营养 基质和浸出过程中的还原剂，多金属结核，在常温、酸性环境下，可直接浸出金属铜、钻、镍、锰 和铁．

The feasibility of bio-leaching valuable metals from mutimetallic nodules in the deep sea bed by using thiobacillus ferrooxidans(T.f.) bacteria was tested. The conditions of bio-leaching valuable metals Co and Ni from multimetallic nodules,for example: the mass ratio of culture medium and nodules, leaching pH Value, inoculation value and leaching temperature have been studied. In the process, the T.f. was tamed. These tests proved it was feasible that: using leathen culture, adding pyrite as the nourishment substance and reductant, under general temperature, acid condition, the nodules were not dried and ground, while the bio-leaching would be carried out effectively, leaching time was nine days, leaching rate was as follows: copper 45.21%, cobalt 98.22%, nickel 95.12%, manganese 97.54%, iron 12.89% (in the leaching solution).