Dual Role of Fe2+ in the Galena Flotation and Influence on Selective Separation
Fe ions, as one of the unavoidable metal ions, are present in flotation pulp as ferric and ferrous species, and the effect of ferric species on the flotation behavior of sulfide minerals has been widely discussed in the above literatures. However, the effect of ferrous species has rarely been notice...
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SAGE Publishing
2023-01-01
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| Series: | Adsorption Science & Technology |
| Online Access: | http://dx.doi.org/10.1155/2023/1660716 |
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| author | Bo Yang Xiao Wang Xian Xie Zixuan Yang |
| author_facet | Bo Yang Xiao Wang Xian Xie Zixuan Yang |
| author_sort | Bo Yang |
| collection | DOAJ |
| description | Fe ions, as one of the unavoidable metal ions, are present in flotation pulp as ferric and ferrous species, and the effect of ferric species on the flotation behavior of sulfide minerals has been widely discussed in the above literatures. However, the effect of ferrous species has rarely been noticed. In this paper, the effect of ferrous species on the flotation behavior and surface characteristics of galena was investigated by using microflotation, zeta potential measurements, X-ray photoelectron spectrometer (XPS) analysis, and density functional theory (DFT) calculations. Microflotation tests indicated that the flotation recovery of galena with potassium butyl xanthate (KBX) as collector was significantly decreased with the addition of Fe2+ in the pulp, and the recovery was further decreased with increasing dosage of Fe2+. In addition, the finer the galena particles, the greater the decrease in flotation recovery. Zeta potential analysis illustrated that the isoelectric point (IEP) was shifted from 4.4 to 5.8 due to the adsorption of ferrous hydroxyl complexes on the galena surface and the zeta potential. XPS surface analysis suggested that the surface oxidation of galena was alleviated by the consumption of O2 in the pulp, which reduced the adsorption of the collector KBX on and the oxidation of xanthates to dixanthogens. Density functional theory (DFT) calculations confirmed that the ferrous hydroxyl complex FeOH+ could be adsorbed on the galena surface by interactions between Fe and S atoms. |
| format | Article |
| id | doaj-art-0cd7b1a6f74c42ad811416d0efb04497 |
| institution | Kabale University |
| issn | 2048-4038 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | SAGE Publishing |
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| series | Adsorption Science & Technology |
| spelling | doaj-art-0cd7b1a6f74c42ad811416d0efb044972025-01-02T23:12:09ZengSAGE PublishingAdsorption Science & Technology2048-40382023-01-01202310.1155/2023/1660716Dual Role of Fe2+ in the Galena Flotation and Influence on Selective SeparationBo Yang0Xiao Wang1Xian Xie2Zixuan Yang3School of Chemistry and Chemical EngineeringSchool of Chemistry and Chemical EngineeringNational & Local Joint Engineering Research Center for the Green and Comprehensive Utilization of Metallic Ore Tailings ResourceYunnan Research Academy of Eco-environmental SciencesFe ions, as one of the unavoidable metal ions, are present in flotation pulp as ferric and ferrous species, and the effect of ferric species on the flotation behavior of sulfide minerals has been widely discussed in the above literatures. However, the effect of ferrous species has rarely been noticed. In this paper, the effect of ferrous species on the flotation behavior and surface characteristics of galena was investigated by using microflotation, zeta potential measurements, X-ray photoelectron spectrometer (XPS) analysis, and density functional theory (DFT) calculations. Microflotation tests indicated that the flotation recovery of galena with potassium butyl xanthate (KBX) as collector was significantly decreased with the addition of Fe2+ in the pulp, and the recovery was further decreased with increasing dosage of Fe2+. In addition, the finer the galena particles, the greater the decrease in flotation recovery. Zeta potential analysis illustrated that the isoelectric point (IEP) was shifted from 4.4 to 5.8 due to the adsorption of ferrous hydroxyl complexes on the galena surface and the zeta potential. XPS surface analysis suggested that the surface oxidation of galena was alleviated by the consumption of O2 in the pulp, which reduced the adsorption of the collector KBX on and the oxidation of xanthates to dixanthogens. Density functional theory (DFT) calculations confirmed that the ferrous hydroxyl complex FeOH+ could be adsorbed on the galena surface by interactions between Fe and S atoms.http://dx.doi.org/10.1155/2023/1660716 |
| spellingShingle | Bo Yang Xiao Wang Xian Xie Zixuan Yang Dual Role of Fe2+ in the Galena Flotation and Influence on Selective Separation Adsorption Science & Technology |
| title | Dual Role of Fe2+ in the Galena Flotation and Influence on Selective Separation |
| title_full | Dual Role of Fe2+ in the Galena Flotation and Influence on Selective Separation |
| title_fullStr | Dual Role of Fe2+ in the Galena Flotation and Influence on Selective Separation |
| title_full_unstemmed | Dual Role of Fe2+ in the Galena Flotation and Influence on Selective Separation |
| title_short | Dual Role of Fe2+ in the Galena Flotation and Influence on Selective Separation |
| title_sort | dual role of fe2 in the galena flotation and influence on selective separation |
| url | http://dx.doi.org/10.1155/2023/1660716 |
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