Recovery of metals and other beneficial products from coal fly ash： a sustainable approach for fly ash management
Recovery of metals and other beneficial products from coal fly ash： a sustainable approach for fly ash management作者机构：Vale Institute of Technology Baventura da Silva BelemPara 66055-090 Brazil Department of Environmental Engineering Kunsan NationalUniversity Jeonbuk 573-701 Republic of Korea Prometeo SDIC Secretary of Higher Education ScienceTechnology and Innovation (SENESCYT) Quito Ecuador Department of Mining Engineering National Institute ofTechnology Rourkela Orissa 769008 India
出 版 物：《International Journal of Coal Science & Technology》 (国际煤炭科学技术学报（英文）)
年 卷 期：2016年第3卷第3期
页 面：267-283页
核心收录：
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 080603[工学-有色金属冶金] 0808[工学-电气工程] 08[工学] 0806[工学-冶金工程] 0818[工学-地质资源与地质工程] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程]
主 题：Coal fly ash Beneficial elements Recovery Hydrometallurgical methods Extraction efficiency
摘 要：Increasing production and disposal of coal fly ash （CFA） is a matter of serious environment concern. However, CFA contains various beneficial metals and mineral matters whose demand is increasing in the industrialized world, while natural supplies are diminishing. Therefore, recovery of these potential resources from CFA can be an alternative way to save mineral resources, as well as to reduce the environmental burden of CFA disposal. There are numerous methods developed for the recovery of beneficial products from CFA. Based on the US patents and journal literatures, the present review describes the recovery status and technologies of major elements such as Al, Si, Fe and Ti, and trace elements such as V, Ga, Ge, Se, Li, Mo, U, Au, Ag, Pt groups and rare earth elements （REEs） and other beneficial products such as magnetic materials, cenospheres, and unburned carbon from CFA. It also highlights the recovery efficiency and drawbacks for their extraction, and suggests future research to develop satisfactory results in terms of selective recovery and purification.
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