嗜酸性化能营养型微生物浸出硫化铅锌矿尾矿规律的研究  

Study on Leaching Sulfide Lead-zinc Mine Tailings by Eosinophilic Chemotrophic Microorganism

作　　者：梁嘉靖[1] 孙水裕[1] 叶茂友[1] 

机构地区：[1]广东工业大学环境科学与工程学院,广东广州510006

出　　处：《广东化工》2015年第13期30-32,共3页Guangdong Chemical Industry

摘　　要：尾矿是二次矿物资源,尾矿中铅锌的回收对提高铅锌矿品位,减少由于矿物开采造成的固体废弃物污染具有重要意义。生物浸出技术由于投资小,污染低,能高效处理低品味复杂矿而被广泛应用。本文以硫化铅锌矿尾矿为研究对象,采用生物法浸出法回收铅锌。考察矿浆固液质量比、矿浆初始p H、不同微生物接种量对硫化铅锌矿尾矿中铅、锌浸出率的影响。结果表明:当矿浆固液比大于0.08、矿浆初始p H小于2.0或大于1.2、微生物接种量大于10%时,铅离子的浸出率有明显升高;当矿浆固液比小于0.2、矿浆初始p值小于2.0大于1.2、微生物接种量大于10%的时候,锌离子浸出率明显升高。Tailings is secondary mineral resources. Recovery to improve the grade of lead-zinc mine tailings of lead and zinc and to reduce solid waste pollution caused by mining, is of great significance. Because of small investment, low pollution, high efficiency for low grade of complex ore leaching, biological leaching technology is widely used. In this paper, with sulfide lead-zinc mine tailings as experimental object, by the methods of biological leaching, recycle lead and zinc. It is studied the influence of the solid-liquid ratio, the initial p H value, the microbe quantity to the leaching rate of lead and zinc in the sulfide lead-zinc mine tailings. The results show that ： when the solid-liquid ratio greater than 0.8,the initial p H value is less than 2.0 and more than 1.2, microbial quantity is more than 10 %, the leaching rate of lead ions have increased significantly; when the solid-liquid ratio is less than 0.2,the initial p H value is less than 2.0 and more than 1.2, microbial quantity is more than 10 %, zinc ions leaching rate have increased significantly.

关 键 词：硫化铅锌矿尾矿 嗜酸性化能营养型微生物 生物浸出 铅、锌浸出率 

分 类 号：TQ[化学工程]