Selective Oxidation Depression of Copper-Activated Sphalerite by H<sub>2</sub>O<sub>2</sub> During Chalcopyrite Flotation
Using hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>), a simple and easily accessible reagent, as a selective depressant, flotation separation experiments of chalcopyrite and copper-activated sphalerite were conducted. The micro-flotation tests of single minerals indicated tha...
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2025-07-01
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| author | Peiqiang Fan Xiong Tong Xian Xie Qiang Song Yuanlin Ma Bin Han Haitao Fu Zhiming Lu |
| author_facet | Peiqiang Fan Xiong Tong Xian Xie Qiang Song Yuanlin Ma Bin Han Haitao Fu Zhiming Lu |
| author_sort | Peiqiang Fan |
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| description | Using hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>), a simple and easily accessible reagent, as a selective depressant, flotation separation experiments of chalcopyrite and copper-activated sphalerite were conducted. The micro-flotation tests of single minerals indicated that H<sub>2</sub>O<sub>2</sub> selectively depresses copper-activated sphalerite and exerted almost no depressant effect on chalcopyrite. In the flotation tests of artificially mixed minerals, a copper concentrate with a grade of 29.95% and a recovery of 87.30% was obtained, while the zinc content was only 5.76%, demonstrating a significant separation effect. The results of contact angle measurement, Zeta potential measurement, surface adsorption analysis, and XPS analysis suggested that H<sub>2</sub>O<sub>2</sub> had a stronger oxidation capacity on the surface of copper-activated sphalerite than chalcopyrite, generating hydrophilic hydroxyl groups on the surface of sphalerite and preventing further adsorption of the collector Z-200 on the surface of sphalerite. |
| format | Article |
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| issn | 2075-4701 |
| language | English |
| publishDate | 2025-07-01 |
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| series | Metals |
| spelling | doaj-art-ea9c29ce917d4338a0771bf90e18d62c2025-07-25T13:30:20ZengMDPI AGMetals2075-47012025-07-0115781310.3390/met15070813Selective Oxidation Depression of Copper-Activated Sphalerite by H<sub>2</sub>O<sub>2</sub> During Chalcopyrite FlotationPeiqiang Fan0Xiong Tong1Xian Xie2Qiang Song3Yuanlin Ma4Bin Han5Haitao Fu6Zhiming Lu7School of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaSchool of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaSchool of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaSchool of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaSchool of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaSchool of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaSchool of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaSchool of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaUsing hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>), a simple and easily accessible reagent, as a selective depressant, flotation separation experiments of chalcopyrite and copper-activated sphalerite were conducted. The micro-flotation tests of single minerals indicated that H<sub>2</sub>O<sub>2</sub> selectively depresses copper-activated sphalerite and exerted almost no depressant effect on chalcopyrite. In the flotation tests of artificially mixed minerals, a copper concentrate with a grade of 29.95% and a recovery of 87.30% was obtained, while the zinc content was only 5.76%, demonstrating a significant separation effect. The results of contact angle measurement, Zeta potential measurement, surface adsorption analysis, and XPS analysis suggested that H<sub>2</sub>O<sub>2</sub> had a stronger oxidation capacity on the surface of copper-activated sphalerite than chalcopyrite, generating hydrophilic hydroxyl groups on the surface of sphalerite and preventing further adsorption of the collector Z-200 on the surface of sphalerite.https://www.mdpi.com/2075-4701/15/7/813chalcopyritecopper-activated sphaleriteflotation separationH<sub>2</sub>O<sub>2</sub>oxidation depression |
| spellingShingle | Peiqiang Fan Xiong Tong Xian Xie Qiang Song Yuanlin Ma Bin Han Haitao Fu Zhiming Lu Selective Oxidation Depression of Copper-Activated Sphalerite by H<sub>2</sub>O<sub>2</sub> During Chalcopyrite Flotation Metals chalcopyrite copper-activated sphalerite flotation separation H<sub>2</sub>O<sub>2</sub> oxidation depression |
| title | Selective Oxidation Depression of Copper-Activated Sphalerite by H<sub>2</sub>O<sub>2</sub> During Chalcopyrite Flotation |
| title_full | Selective Oxidation Depression of Copper-Activated Sphalerite by H<sub>2</sub>O<sub>2</sub> During Chalcopyrite Flotation |
| title_fullStr | Selective Oxidation Depression of Copper-Activated Sphalerite by H<sub>2</sub>O<sub>2</sub> During Chalcopyrite Flotation |
| title_full_unstemmed | Selective Oxidation Depression of Copper-Activated Sphalerite by H<sub>2</sub>O<sub>2</sub> During Chalcopyrite Flotation |
| title_short | Selective Oxidation Depression of Copper-Activated Sphalerite by H<sub>2</sub>O<sub>2</sub> During Chalcopyrite Flotation |
| title_sort | selective oxidation depression of copper activated sphalerite by h sub 2 sub o sub 2 sub during chalcopyrite flotation |
| topic | chalcopyrite copper-activated sphalerite flotation separation H<sub>2</sub>O<sub>2</sub> oxidation depression |
| url | https://www.mdpi.com/2075-4701/15/7/813 |
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