Zijie Huang

Central South University

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Wei Sun

Central South University

Zhiyong Gao

Central South University

Hua Yang

Beijing Normal University

Xingxiang Wang

University of Chinese Academy of Sciences

Jianjun Wang

Nanjing Institute of Geography and Limnology

Yushan Li

Guangdong Pharmaceutical University

Yuliang Long

Gaogui Jing

Central South University

Jianjun Wang

Nanjing Institute of Geography and Limnology

Jian Cao

Sixth Affiliated Hospital of Kunming Medical University

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Chinese Academy of Sciences

Central South University

University of Chinese Academy of Sciences

Education Department of Hunan Province

Beijing Normal University

Tianjin Research Institute of Water Transport Engineering

Ministry of Transport

Nanjing Institute of Geography and Limnology

State Key Laboratory of Remote Sensing Science

Aerospace Information Research Institute

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Selective flotation of chalcopyrite from pyrite using diphosphonic acid as collector

Minerals Engineering (2019)

Zijie Huang Jianjun Wang Wei Sun Yuehua Hu Jian Cao

Xanthate

Froth flotation

Sulfide Minerals

Mineral processing

Zeta potential

10.1016/j.mineng.2019.105890

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Citations (42)

Atmospheric Deposition of Cadmium Around a Large Copper Smelter: Characteristics and Correlations with Meteorological Factors

Water Air & Soil Pollution (2023)

Yushan Li Yuliang Long Hua Yang Zijie Huang Xingxiang Wang

Deposition

Scavenging

10.1007/s11270-023-06206-x

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Citations (2)

Ethylenediamine tetramethylenephosphonic acid as a selective collector for the improved separation of chalcopyrite against pyrite at low alkalinity

International Journal of Mining Science and Technology (2023)

Jianjun Wang Gaogui Jing Renji Zheng Zijie Huang Wei Sun

Chalcopyrite is the main Cu-containing mineral and cannot be separated well from pyrite using traditional xanthate collectors with large amounts of lime depressant, resulting in difficulties of the tailing treatment and associated precious metals recovery. Therefore, in this study, the green and odourless ethylenediamine tetramethylenephosphonic acid (EDTMPA) was introduced as a novel chalcopyrite collector. Flotation results from the binary mineral mixture and real ore demonstrated that EDTMPA could realize the selective separation of chalcopyrite from pyrite relative to ethyl xanthate (EX) without any depressants within the wide pH range of 6.0–11.0, and might replace the traditional high-alkaline lime process. Electrochemical and Fourier transform infrared spectra measurements indicated that the difference in adsorption performance of EDTMPA on chalcopyrite and pyrite was larger than that of EX, suggesting a better selectivity for EDTMPA. Density functional theory calculations demonstrated that there were stronger chemical bonds between P—O groups of EDTMPA and the Fe/Cu atoms on chalcopyrite in the form of a stable six-membered ring. Crystal chemistry calculations further revealed that the activity of metal atoms of chalcopyrite was higher than that of pyrite. Therefore, these basic theoretical results and practical application provide a guidance for the industrial application of EDTMPA in chalcopyrite flotation.

Xanthate

Ethylene diamine

Alkalinity

Depressant

10.1016/j.ijmst.2023.03.010

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Citations (11)