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Yang W, Qiu T, Qiu X, Yan H, Jiao Q, Ding K, Zhao G. Pullulan Polysaccharide as an Eco-Friendly Depressant for Flotation Separation of Chalcopyrite and Molybdenite. ACS OMEGA 2024; 9:29557-29565. [PMID: 39005824 PMCID: PMC11238299 DOI: 10.1021/acsomega.4c02464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/06/2024] [Accepted: 05/16/2024] [Indexed: 07/16/2024]
Abstract
It is difficult to separate molybdenite and chalcopyrite by froth flotation due to the good floatability of the two minerals. In this paper, the separation of copper-molybdenum sulfide minerals was realized by using pullulan polysaccharide (PU) as the depressant. The flotation test results showed that the copper concentrate grade increased from 16.24 to 29.86%, and the copper concentrate recovery reached 83.55% under low alkali conditions. The selective separation mechanism of the two minerals by PU was revealed through contact angle measurements, ζ-potential measurements, Fourier transform infrared (FTIR) spectroscopy analyses, and X-ray photoelectron spectroscopy (XPS) analyses. The ζ-potential and contact angle results showed that PU is more easily adsorbed on molybdenite to strengthen the hydrophilicity of molybdenite. The FTIR and XPS results showed that PU is adsorbed on molybdenite by physical interactions, and hydrophobic interactions and hydrogen bonding play a major role.
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Affiliation(s)
- Wenhui Yang
- School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Tingsheng Qiu
- School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
- Jiangxi Province Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Xianhui Qiu
- School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
- Jiangxi Province Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Huashan Yan
- School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
- Jiangxi Province Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Qinghao Jiao
- School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Kaiwei Ding
- School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Guanfei Zhao
- School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
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Xie R, Zhao Z, Wang X, Song Q, Tong X, Xie X. Flotation Separation of Fluorite from Calcite using an Efficient Depressant Nitrilotriacetic Acid in the NaOL System. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:2624-2631. [PMID: 38284569 DOI: 10.1021/acs.langmuir.3c03083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
Fluorite and calcite were separated with nitrilotriacetic acid (NTA) as a depressant. The single mineral flotation experiment confirmed that with 40 mg/L NaOL and 80 mg/L NTA, the fluorite recovery and calcite recovery were 24.37 and 94.13%, respectively, at pH 9. Meanwhile, in the fluorite-calcite binary mixed ore flotation experiment, the calcite recovery and fluorite recovery were 75.50 and 26.84%, respectively, and the CaCO3 and CaF2 grade in concentrate was 74.32 and 25.61%, respectively. The results confirmed that NTA could be used as a depressant to selectively inhibit fluorite flotation. The mechanism study illustrated that NTA was selectively reacted with fluorite by chemical interaction between O of NTA and Ca of fluorite. The adsorption of NTA on fluorite will impede the interaction between fluorite and NaOL. NTA could adsorb on fluorite in three ways, while the dominant two ways were the complex between double O of NTA and Ca of fluorite in a vertical model and the complex between double O of NTA and Ca of fluorite in a horizontal model.
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Affiliation(s)
- Ruiqi Xie
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
- State Key Laboratory of Mineral Processing, BGRIMM Technology Group, Beijing 102600, China
| | - Zhihui Zhao
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
- State Key Laboratory of Mineral Processing, BGRIMM Technology Group, Beijing 102600, China
| | - Xun Wang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
- State Key Laboratory of Mineral Processing, BGRIMM Technology Group, Beijing 102600, China
| | - Qiang Song
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
- State Key Laboratory of Mineral Processing, BGRIMM Technology Group, Beijing 102600, China
| | - Xiong Tong
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
- State Key Laboratory of Mineral Processing, BGRIMM Technology Group, Beijing 102600, China
| | - Xian Xie
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
- State Key Laboratory of Mineral Processing, BGRIMM Technology Group, Beijing 102600, China
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Effective flotation separation of malachite from quartz with a selective collector: Collection ability, separation performance and adsorption mechanism. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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A Quantitative Relationship between Oxidation Index and Chalcopyrite Flotation Recovery. MINERALS 2022. [DOI: 10.3390/min12070888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The surface oxidation of chalcopyrite is one of the most important factors affecting its flotation performance. In this study, a critical oxidation degree is proposed to define “slight” and “significant” oxidation in terms of surface species and chalcopyrite flotation recovery. Slight oxidation enhanced chalcopyrite hydrophobicity, but significant oxidation reduced its recovery apparently. Microthermokinetic measurements indicated that the apparent activation energy (Ea) of chalcopyrite oxidation was reduced from around 173 kJ·mol−1 to 163 kJ·mol−1 when the reaction changed from slight oxidation to significant oxidation when applying H2O2. The surface oxidation degree was defined as the ratio of hydrophilic species to hydrophobic species. The highest recovery (94.8%) and contact angle (93°) were achieved at a concentration of 0.1 vol.% H2O2, with the lowest oxidation degree of 0.388 being observed. The oxidation degree was correlated to the flotation recovery, with a quantitative relationship (y = −298.81x + 213.05, y and x represent flotation recovery and oxidation degree, respectively, 0.388 ≤ x ≤ 0.618) being established, thereby giving a guideline to better manage chalcopyrite flotation by controlling its surface oxidation and SBX adsorption on chalcopyrite surfaces.
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He S, Huang Y, Wang M, Zhang Y, Chen L, Jia Y, Liu H. An efficient solid-liquid interface adsorption mode in chalcopyrite flotation with a novel di-minerophilic group surfactant 5-methyl isobutylxanthate-1,3,4-oxadiazole-2-thione. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Adsorption mechanism of a new depressant on pyrite surfaces and its application to the selective separation of chalcopyrite from pyrite. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126892] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Adsorption and depression mechanism of an eco-friendly depressant PCA onto chalcopyrite and pyrite for the efficiency flotation separation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126574] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Xie R, Zhu Y, Liu J, Li Y. The flotation behavior and adsorption mechanism of a new cationic collector on the separation of spodumene from feldspar and quartz. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118445] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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