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Investigation on the correlation between ferrous ion and the floatability of pyrite with different oxidation degrees

文献类型：期刊论文

作者Zhao, Haiping1,2,3; Niu, Xiaopeng2,3; Dong, Bingxu1,2,3; Jia, Xianbing2,3; Ruan, Renman2,3
刊名MINERALS ENGINEERING
出版日期2022-06-30
卷号184页码:7
ISSN号0892-6875
关键词Pyrite Flotation Oxidation degree Xanthate oxidation Ferrous ions
DOI10.1016/j.mineng.2022.107636
英文摘要This work aims to establish the quantitative relationship between the surface oxidation state of pyrite and flotation performance. In this paper, an efficient method was proposed to prepare pyrite with different oxidation degrees. Flotation tests show that the floatability of pyrite decreased with prolonging the oxidation time. TofSIMS results reveal that the main component on the oxidized pyrite surface is Fe hydroxides or oxides. XPS analysis confirms that Fe(OH)2 and FeOOH are the main formula of Fe species, and the ratio of Fe2+/Total Fe agrees well with the floatability of pyrite with different oxidation degrees, which can be taken as an index to develop the flotation performance of pyrite. DFT simulation calculation further demonstrates the reliability of Fe (OH)2 as the active site. This study provides essential surface chemistry evidence for correlating the surface species with the floatability of pyrite with different oxidation states through quantitative analysis of various intermediate products.
WOS关键词GENERALIZED GRADIENT APPROXIMATION ; SURFACE OXIDATION ; BINDING-ENERGIES ; OXIDIZED PYRITE ; XPS SPECTRA ; BAND-GAP ; FLOTATION ; IRON ; CHALCOPYRITE ; ADSORPTION
资助项目Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019A08]
WOS研究方向Engineering ; Mineralogy ; Mining & Mineral Processing
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000811461100002
资助机构Innovation Academy for Green Manufacture, Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/54002]  
专题中国科学院过程工程研究所
通讯作者Ruan, Renman
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Natl Engn Res Ctr Green Recycling Strateg Met Reso, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Haiping,Niu, Xiaopeng,Dong, Bingxu,et al. Investigation on the correlation between ferrous ion and the floatability of pyrite with different oxidation degrees[J]. MINERALS ENGINEERING,2022,184:7.
APA Zhao, Haiping,Niu, Xiaopeng,Dong, Bingxu,Jia, Xianbing,&Ruan, Renman.(2022).Investigation on the correlation between ferrous ion and the floatability of pyrite with different oxidation degrees.MINERALS ENGINEERING,184,7.
MLA Zhao, Haiping,et al."Investigation on the correlation between ferrous ion and the floatability of pyrite with different oxidation degrees".MINERALS ENGINEERING 184(2022):7.

入库方式： OAI收割

来源：过程工程研究所

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