Zinc Recovery from Wulagen Sulfide Flotation Plant Tail by Applying Ether Amine Organic Collectors
Separating oxidized zinc minerals from flotation tailings is always a challenge. In this study, a flotation tailing from Wulagen zinc mine in China (Zn grade < 1%) was processed using froth flotation with combinations of amines (OPA 10, OPA 1214, OPA 13, DDA) and Na<sub>2</sub>S to st...
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MDPI AG
2021-09-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/17/5365 |
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| author | Zilong Ma Lei Wang Xiao Ni Yinfei Liao Zhian Liang |
| author_facet | Zilong Ma Lei Wang Xiao Ni Yinfei Liao Zhian Liang |
| author_sort | Zilong Ma |
| collection | DOAJ |
| description | Separating oxidized zinc minerals from flotation tailings is always a challenge. In this study, a flotation tailing from Wulagen zinc mine in China (Zn grade < 1%) was processed using froth flotation with combinations of amines (OPA 10, OPA 1214, OPA 13, DDA) and Na<sub>2</sub>S to study the effects of these amines on the zinc recovery as well as their interactions with other reagents, aiming to screen out a proper reagent scheme to improve zinc separation from extremely low-grade zinc flotation tailings. The results show that different amines led to different flotation performance, and the collectors were ranked as OPA 1214, OPA 13, OPA 10 and DDA in a decreasing order based on flotation collectivity and selectivity. An increase in the concentration of each collector increased the zinc recovery but reduced the concentrate zinc grade. Interactions were also observed between different amines and Na<sub>2</sub>S and Na<sub>2</sub>SiO<sub>3</sub>, and OPA 1214 outdid the others in saving the usage of both the Na<sub>2</sub>S and Na<sub>2</sub>SiO<sub>3</sub>. The measured adsorption of collector onto smithsonite was found to correlate well with flotation test results. It was concluded that hydrocarbon chains can be held accountable for the difference in the flotation performance with different amines. The longer the hydrocarbon chain, the stronger the hydrophobic association ability of amine, which is conducive to the selective amine adsorption onto sulfurized smithsonite particles and hence the smithsonite flotation. |
| first_indexed | 2024-03-10T08:06:28Z |
| format | Article |
| id | doaj.art-fc9ab71a658a44f0971e50c1242f7a04 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T08:06:28Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-fc9ab71a658a44f0971e50c1242f7a042023-11-22T11:03:05ZengMDPI AGMolecules1420-30492021-09-012617536510.3390/molecules26175365Zinc Recovery from Wulagen Sulfide Flotation Plant Tail by Applying Ether Amine Organic CollectorsZilong Ma0Lei Wang1Xiao Ni2Yinfei Liao3Zhian Liang4National Engineering Research Centre of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, ChinaNational Engineering Research Centre of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, ChinaFaculty of Materials Engineering, Baise University, Baise 533000, ChinaNational Engineering Research Centre of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory of Comprehensive Utilization of Low Grade Refractory Gold Ores, Shanghang 364200, ChinaSeparating oxidized zinc minerals from flotation tailings is always a challenge. In this study, a flotation tailing from Wulagen zinc mine in China (Zn grade < 1%) was processed using froth flotation with combinations of amines (OPA 10, OPA 1214, OPA 13, DDA) and Na<sub>2</sub>S to study the effects of these amines on the zinc recovery as well as their interactions with other reagents, aiming to screen out a proper reagent scheme to improve zinc separation from extremely low-grade zinc flotation tailings. The results show that different amines led to different flotation performance, and the collectors were ranked as OPA 1214, OPA 13, OPA 10 and DDA in a decreasing order based on flotation collectivity and selectivity. An increase in the concentration of each collector increased the zinc recovery but reduced the concentrate zinc grade. Interactions were also observed between different amines and Na<sub>2</sub>S and Na<sub>2</sub>SiO<sub>3</sub>, and OPA 1214 outdid the others in saving the usage of both the Na<sub>2</sub>S and Na<sub>2</sub>SiO<sub>3</sub>. The measured adsorption of collector onto smithsonite was found to correlate well with flotation test results. It was concluded that hydrocarbon chains can be held accountable for the difference in the flotation performance with different amines. The longer the hydrocarbon chain, the stronger the hydrophobic association ability of amine, which is conducive to the selective amine adsorption onto sulfurized smithsonite particles and hence the smithsonite flotation.https://www.mdpi.com/1420-3049/26/17/5365froth flotationsmithsonite tailingsether amine |
| spellingShingle | Zilong Ma Lei Wang Xiao Ni Yinfei Liao Zhian Liang Zinc Recovery from Wulagen Sulfide Flotation Plant Tail by Applying Ether Amine Organic Collectors Molecules froth flotation smithsonite tailings ether amine |
| title | Zinc Recovery from Wulagen Sulfide Flotation Plant Tail by Applying Ether Amine Organic Collectors |
| title_full | Zinc Recovery from Wulagen Sulfide Flotation Plant Tail by Applying Ether Amine Organic Collectors |
| title_fullStr | Zinc Recovery from Wulagen Sulfide Flotation Plant Tail by Applying Ether Amine Organic Collectors |
| title_full_unstemmed | Zinc Recovery from Wulagen Sulfide Flotation Plant Tail by Applying Ether Amine Organic Collectors |
| title_short | Zinc Recovery from Wulagen Sulfide Flotation Plant Tail by Applying Ether Amine Organic Collectors |
| title_sort | zinc recovery from wulagen sulfide flotation plant tail by applying ether amine organic collectors |
| topic | froth flotation smithsonite tailings ether amine |
| url | https://www.mdpi.com/1420-3049/26/17/5365 |
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