Efficient and Green Flotation Separation of Molybdenite from Chalcopyrite Using 1-Thioglycerol as Depressant
The effective and environmental separation of chalcopyrite and molybdenite has long presented a challenge in mineral processing due to their similar floatability and close association at room temperature. This study explores the non-toxic 1-thioglycerol (1-TG) as a selective depressant for chalcopyr...
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MDPI AG
2025-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/15/3/299 |
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| author | Feng Jiang Shuai He Wei Sun Yuanjia Luo Honghu Tang |
| author_facet | Feng Jiang Shuai He Wei Sun Yuanjia Luo Honghu Tang |
| author_sort | Feng Jiang |
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| description | The effective and environmental separation of chalcopyrite and molybdenite has long presented a challenge in mineral processing due to their similar floatability and close association at room temperature. This study explores the non-toxic 1-thioglycerol (1-TG) as a selective depressant for chalcopyrite–molybdenite flotation separation. An impressive separation effect was realized through single-mineral and mixed-mineral flotation experiments when using 1-TG as a depressant and kerosene as a collector. Contact angle measurements, zeta potential tests, and Fourier transform infrared spectroscopy (FT-IR) confirm the selective adsorption of 1-TG on the chalcopyrite surface, leading to enhanced surface hydrophilicity and the inhibition of collector adsorption. The depression mechanism is further elucidated through X-ray photoelectron spectroscopy (XPS), which demonstrates that it occurs via chemosorption between the thiol group in 1-TG and active iron sites on the chalcopyrite surface. These findings provide a potential efficient depressant for chalcopyrite–molybdenite flotation separation with low dosage, environmental friendliness, and human harmlessness. |
| format | Article |
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| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-03-01 |
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| series | Metals |
| spelling | doaj-art-1d3effeed6a2440abfd79846ef011db32025-08-20T03:43:20ZengMDPI AGMetals2075-47012025-03-0115329910.3390/met15030299Efficient and Green Flotation Separation of Molybdenite from Chalcopyrite Using 1-Thioglycerol as DepressantFeng Jiang0Shuai He1Wei Sun2Yuanjia Luo3Honghu Tang4School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaThe effective and environmental separation of chalcopyrite and molybdenite has long presented a challenge in mineral processing due to their similar floatability and close association at room temperature. This study explores the non-toxic 1-thioglycerol (1-TG) as a selective depressant for chalcopyrite–molybdenite flotation separation. An impressive separation effect was realized through single-mineral and mixed-mineral flotation experiments when using 1-TG as a depressant and kerosene as a collector. Contact angle measurements, zeta potential tests, and Fourier transform infrared spectroscopy (FT-IR) confirm the selective adsorption of 1-TG on the chalcopyrite surface, leading to enhanced surface hydrophilicity and the inhibition of collector adsorption. The depression mechanism is further elucidated through X-ray photoelectron spectroscopy (XPS), which demonstrates that it occurs via chemosorption between the thiol group in 1-TG and active iron sites on the chalcopyrite surface. These findings provide a potential efficient depressant for chalcopyrite–molybdenite flotation separation with low dosage, environmental friendliness, and human harmlessness.https://www.mdpi.com/2075-4701/15/3/299chalcopyritemolybdeniteflotationdepressant1-thioglycerol |
| spellingShingle | Feng Jiang Shuai He Wei Sun Yuanjia Luo Honghu Tang Efficient and Green Flotation Separation of Molybdenite from Chalcopyrite Using 1-Thioglycerol as Depressant Metals chalcopyrite molybdenite flotation depressant 1-thioglycerol |
| title | Efficient and Green Flotation Separation of Molybdenite from Chalcopyrite Using 1-Thioglycerol as Depressant |
| title_full | Efficient and Green Flotation Separation of Molybdenite from Chalcopyrite Using 1-Thioglycerol as Depressant |
| title_fullStr | Efficient and Green Flotation Separation of Molybdenite from Chalcopyrite Using 1-Thioglycerol as Depressant |
| title_full_unstemmed | Efficient and Green Flotation Separation of Molybdenite from Chalcopyrite Using 1-Thioglycerol as Depressant |
| title_short | Efficient and Green Flotation Separation of Molybdenite from Chalcopyrite Using 1-Thioglycerol as Depressant |
| title_sort | efficient and green flotation separation of molybdenite from chalcopyrite using 1 thioglycerol as depressant |
| topic | chalcopyrite molybdenite flotation depressant 1-thioglycerol |
| url | https://www.mdpi.com/2075-4701/15/3/299 |
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