Flotation Separation of Covellite and Enargite via Oxidation Treatment
The flotation separation of enargite from copper sulfide minerals is difficult owing to the similar floatability and reagent adsorption characteristics of these minerals. In this study, the effect of oxidation treatment using NaClO flow with FeCl<sub>3</sub> on the flotation separation o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/8/970 |
| _version_ | 1797443259319975936 |
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| author | Yonggang Gan Rongdong Deng Quanjun Liu |
| author_facet | Yonggang Gan Rongdong Deng Quanjun Liu |
| author_sort | Yonggang Gan |
| collection | DOAJ |
| description | The flotation separation of enargite from copper sulfide minerals is difficult owing to the similar floatability and reagent adsorption characteristics of these minerals. In this study, the effect of oxidation treatment using NaClO flow with FeCl<sub>3</sub> on the flotation separation of covellite and enargite was systematically investigated. Micro-flotation tests and contact angle measurements indicated that the addition of NaClO and FeCl<sub>3</sub> increased the hydrophobicity difference between covellite and enargite. The bench-scale flotation test results show that the bulk copper concentrate could be separated into two products: a low-arsenic-containing (0.46%) and a high-arsenic-containing (5.18%) copper concentrate. X-ray photoelectron spectroscopy and scanning electron microscopy revealed that the oxidization treatment of NaClO caused the accumulation of oxides on the covellite surface, but not on the enargite surface. The varying precipitation of ferric hydroxide on the surfaces of covellite and enargite further exacerbated the difference in the hydrophilicity of these minerals. Thus, a possible method for separating enargite from covellite was obtained through oxidation treatment using NaClO and FeCl<sub>3</sub>. |
| first_indexed | 2024-03-09T12:53:23Z |
| format | Article |
| id | doaj.art-e3cd94860a864d3c9bd5487cad68809a |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T12:53:23Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-e3cd94860a864d3c9bd5487cad68809a2023-11-30T22:03:08ZengMDPI AGMinerals2075-163X2022-07-0112897010.3390/min12080970Flotation Separation of Covellite and Enargite via Oxidation TreatmentYonggang Gan0Rongdong Deng1Quanjun Liu2Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaZijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, ChinaFaculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaThe flotation separation of enargite from copper sulfide minerals is difficult owing to the similar floatability and reagent adsorption characteristics of these minerals. In this study, the effect of oxidation treatment using NaClO flow with FeCl<sub>3</sub> on the flotation separation of covellite and enargite was systematically investigated. Micro-flotation tests and contact angle measurements indicated that the addition of NaClO and FeCl<sub>3</sub> increased the hydrophobicity difference between covellite and enargite. The bench-scale flotation test results show that the bulk copper concentrate could be separated into two products: a low-arsenic-containing (0.46%) and a high-arsenic-containing (5.18%) copper concentrate. X-ray photoelectron spectroscopy and scanning electron microscopy revealed that the oxidization treatment of NaClO caused the accumulation of oxides on the covellite surface, but not on the enargite surface. The varying precipitation of ferric hydroxide on the surfaces of covellite and enargite further exacerbated the difference in the hydrophilicity of these minerals. Thus, a possible method for separating enargite from covellite was obtained through oxidation treatment using NaClO and FeCl<sub>3</sub>.https://www.mdpi.com/2075-163X/12/8/970flotation separationenargitecovelliteoxidation treatmentNaClOFeCl<sub>3</sub> |
| spellingShingle | Yonggang Gan Rongdong Deng Quanjun Liu Flotation Separation of Covellite and Enargite via Oxidation Treatment Minerals flotation separation enargite covellite oxidation treatment NaClO FeCl<sub>3</sub> |
| title | Flotation Separation of Covellite and Enargite via Oxidation Treatment |
| title_full | Flotation Separation of Covellite and Enargite via Oxidation Treatment |
| title_fullStr | Flotation Separation of Covellite and Enargite via Oxidation Treatment |
| title_full_unstemmed | Flotation Separation of Covellite and Enargite via Oxidation Treatment |
| title_short | Flotation Separation of Covellite and Enargite via Oxidation Treatment |
| title_sort | flotation separation of covellite and enargite via oxidation treatment |
| topic | flotation separation enargite covellite oxidation treatment NaClO FeCl<sub>3</sub> |
| url | https://www.mdpi.com/2075-163X/12/8/970 |
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