铁矾渣中有价金属的微生物矿化-浮选回收可能性和前景  

Possibility and Prospect of Recovery of Valuable M etals in Jarosite Residues Using Microorganism Mineralization-flotation Method

作　　者：杨慧芬[1] 孙启峰 马文凯 李真 李兆峰 Yang Huifeng;Sun Qifeng;Ma Wenkai;Li Zhen;Li Zhaofeng(University of Science and Technology Beijing,School of Civil and Resource Engineering,Beijing,China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083

出　　处：《矿产综合利用》2020年第1期43-46,共4页Multipurpose Utilization of Mineral Resources

摘　　要：铁矾渣含有较高的重金属和硫酸盐,是一种具有金属回收价值的危险固体废物。高效回收铁矾渣中有价金属是铁矾渣资源化和无害化的重要方向,但目前使用的湿法、火法、湿法-火法联合法和硫化-浮选法等,其资源化和无害化程度均有限。借鉴硫酸盐还原菌这种矿化微生物对含硫酸盐和重金属废水的无害化处理原理和研究成果,本文提出了微生物矿化-浮选法回收铁矾渣中有价金属的思路以及需解决的关键技术问题,有望成为铁矾渣及类似有色金属冶炼渣中有价金属高效、无害化回收的一种可行方法。Jarosite residue,with high heavy metals and sulfates,is a kind of hazardous solid waste with metal recovery value.The efficient reecovery of valuable metals from the residue is an important direction for the resourcization and harmlessness o f the residue.However,there are some limitations using the current application methods,such as wet method,fire method,wet-fire method and sulphurization-flotation method in the degree o f the resourcization and harmlessness.Based on the principle and research results using sulfate-reducing bacteria,a mineralization microorganism for the harmless treatment of wastewater containing sulfates and heavy metals,the mineralization by microbes followed by flotation for the recovery of valuable metals from the residue and key technical issues to be addressed were proposed in the article.It is expected to be a feasible method for the efficient and innocuous recovery of valuable metals from the jarosite and similar nonferrous residues.

关 键 词：铁矾渣 有价金属 微生物 硫酸盐还原菌 矿化 浮选 

分 类 号：TD923[矿业工程—选矿] X758[环境科学与工程—环境工程]