四川某低品位尾矿中铜、锌硫化物生物浸出研究

发布时间：2018-02-28 12:14

本文关键词： 尾矿铜锌硫化物生物浸出　出处：《矿冶工程》2017年01期 　论文类型：期刊论文

【摘要】：为了回收四川某铜矿浮选尾矿中的铜和锌,以In-bac为浸矿菌种,进行微生物浸出。考察了接种量、矿浆浓度、初始Fe~(2+)浓度、浮选药剂(T-207和H-406)等因素对浸出效果的影响。结果表明,采用两阶段微生物浸出工艺,尾矿中铜、锌浸出效果较好,第一阶段微生物浸出最佳条件为:接种量10%、矿浆浓度80 g/L、初始Fe2+浓度1.5 g/L,尾矿中铜离子和锌离子浸出率分别为21.67%和79.67%,此浸渣再次调浆后,采用改进型无铁9K培养基,无接种细菌微生物浸出,当初始pH值为2.0、矿浆浓度为80 g/L、初始Fe~(2+)浓度为0 g/L,尾矿中铜浸出率达到36.97%,锌浸出率为92.37%,浸出率分别提高了15.30个百分点和12.70个百分点。浮选药剂T-207和H-406均对尾矿微生物浸出有不利影响。
[Abstract]:In order to recover copper and zinc from flotation tailings of a copper mine in Sichuan province, microorganism leaching was carried out with In-bac as leaching bacteria. Inoculation amount, pulp concentration and initial Fe~(2 concentration were investigated. The effects of flotation reagents such as T-207 and H-406) on leaching efficiency were studied. The results showed that the leaching effect of copper and zinc in tailings was better by using two-stage microbial leaching process. In the first stage, the optimum conditions of microbial leaching were as follows: inoculation amount 10%, pulp concentration 80 g / L, initial Fe2 concentration 1.5 g / L, and leaching rates of copper and zinc ions in tailings were 21.67% and 79.67, respectively. Inoculation-free microorganism leaching, When the initial pH value is 2.0, pulp concentration is 80 g / L, initial Fe~(2 concentration is 0 g / L, copper leaching rate in tailings reaches 36.97%, zinc leaching rate is 92.37%, leaching rate increases 15.30% and 12.70% respectively. Flotation reagents T-207 and H-406 both have opposite tailings. Microbial leaching has adverse effects.
【作者单位】：固体废物处理与资源化教育部重点实验室;四川里伍铜业股份有限公司;
【基金】：四川省教育厅科研项目(16ZA0143) 固体废物处理与资源化教育部重点实验室资助课题(13zxgk07)
【分类号】：TD926.4

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