摘要
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 ,采用微生物连续高密度培养、矿浆预浸、微生物固定和强化传质的手段 ,研究多金属结核的微生物浸出。质量比 1∶1的黄铁矿作为还原剂、矿浆质量浓度 40 g/L ,pH =2 ,30℃浸出温度为最佳浸出条件。陆地软猛矿和硬猛矿浸出 9天 ,锰浸出率分别为 95 6 %和 96 8%。微生物催化还原浸出氧化猛矿中有价金属。
Under normal atmospheric temperature,acidic and anaerobic condition,the bacteria leaching process of multimetallic nodules is investigated with rational addition of nutrient and electron supplier,consequent bacteria cultivation in high density,and microbe immobilization and enhance energy transmission The effect of type and dosage of reductant,the pulp concentration,pH,and temperature on multimetallic nodules leaching is described The optimal leaching parameters are equivalent pyrite as reductant,pulp concentration 40g/L,pH=2,30℃ The leaching rates of manganese in the land manganic ores,pyrolusite and psilomelane,are 95 6% and 96 8%, respectively by using the same method and parameters for multimetallic nodules Under the catalysis of bacteria,reduction and oxidation is coupled to leach valuable metals from manganese ore The bacteria leaching by means of gene technology will develop further
出处
《有色金属》
CSCD
2001年第3期5-8,共4页
Nonferrous Metals
基金
国家长远发展专项项目DY95 -0 4-0 5
