An extreme thermophilic, iron-sulphur oxidising bacterial culture was isolated and adapted to tolerate high metal and solids concentrations at 70°C. Following isolation and adaptation, the culture was used in a batch bioleach test employing a 5-l glass standard magnetic agitated and aerated reactor, for the bioleaching of a copper-lead-zinc collective concentrate. The culture exhibited stable leach performance over the period of leach operation and overall copper and zinc extractions higher than 97%. Lead sulphide is transformed into lead sulphate remaining in the bioleach residue due to the low solubility in sulphate media. Brine leaching of bioleach residue yields 95% lead extraction. [Projekat Ministarstva nauke Republike Srbije, br. 34023]
展开▼
机译：分离出一种极端嗜热的铁硫氧化细菌培养物，并使其能够耐受70°C的高金属和固体浓度。分离和适应后，将培养物用于分批生物浸出试验中，该实验采用5升玻璃标准磁力搅拌和充气反应器进行生物浸出，对铜铅锌集体精矿进行生物浸出。该培养物在浸出操作期间表现出稳定的浸出性能，且铜和锌的总提取率均高于97％。由于在硫酸盐介质中的低溶解度，硫化铅被转化为残留在生物浸出残渣中的硫酸铅。盐水浸出生物浸出残余物可产生95％的铅提取量。 [Projekat Ministarstva nauke Republike Srbije，br。 34023]
展开▼
