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Huang X, Zhang Q. Interaction Behavior between Coarse and Fine Particles in the Reverse Flotation of Fluorapatite and Dolomite. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:12931-12943. [PMID: 37647509 DOI: 10.1021/acs.langmuir.3c02117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
The precondition for efficient flotation of middle- to low-grade phosphate ore is the dissociation of apatite from gangue minerals through fine grinding. However, fine gangue minerals, such as dolomite, have a lower hardness and are thus easily overground and converted into slime during the grinding stage. The effect of -10 μm dolomite fines (Dol-10μm) on the flotation of -75 + 25 μm dolomite (Dol-75+25μm) and -75 + 25 μm fluorapatite (FAp-75+25μm) from a detailed mechanism was investigated by microflotation tests, cryo-electron microscopy analysis, contact angle measurements, bubble-particle attachment test, and EDLVO theory. It was found that Dol-10μm significantly reduced the recovery of Dol-75+25μm and FAp-75+25μm. The Dol-10μm particles could decrease the flotation recovery of Dol-75+25μm particles by masking on their surfaces, thus reducing the hydrophobicity of mineral surfaces and preventing them from floating. Furthermore, Dol-10μm particles were easily adsorbed on the FAp-75+25μm surface and could not be effectively floated, which results in fine dolomite being mixed into the concentrate at the bottom of the tank, thereby reducing the selectivity of reverse flotation for phosphate ore. The interaction energy calculation showed that the presence of NaOL led to an attractive interaction force between Dol-10μm and Dol-75+25μm, as well as between Dol-10μm and FAp-75+25μm. As a result, Dol-10μm particles presented a nonselective aggregation with Dol-75+25μm and FAp-75+25μm particles, explaining the phenomenon of "slime coating" and the depressing effect of dolomite fines on phosphate reverse flotation.
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Affiliation(s)
- Xiaofen Huang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
- National and Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas, Guiyang 550025, Guizhou, China
- Guizhou Engineering Laboratory of Efficient Utilization of Superior Mineral Resources, Guiyang 550025, China
- Guizhou Key Laboratory of Comprehensive Utilization of Nonmetallic Mineral Resources, Guiyang 550025, Guizhou, China
| | - Qin Zhang
- Guizhou Academy of Sciences, Guiyang 550001, Guizhou, China
- National and Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas, Guiyang 550025, Guizhou, China
- Guizhou Engineering Laboratory of Efficient Utilization of Superior Mineral Resources, Guiyang 550025, China
- Guizhou Key Laboratory of Comprehensive Utilization of Nonmetallic Mineral Resources, Guiyang 550025, Guizhou, China
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Zhao P, Liu W, Liu W, Shen Y, Cui B, Zhao Q. Novel low-foam viscous cationic collector 2-[2-(Tetradecylamino)ethoxy]ethanol: design, synthesis, and flotation performance study to quartz. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zhong C, Feng B, Zhang L, Zhang W, Wang H, Gao Z. Flotation separation of apatite and calcite using gum arabic as a depressant. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127723] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang L, Gao H, Song S, Zhou W, Xue N, Nie Y, Feng B. The depressing role of sodium alginate in the flotation of Ca2+-activated quartz using fatty acid collector. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117618] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Li Z, Wang X, Miao J, Xing L, Zhang S. Antibacterial Activity of Dodecylamine Dialdehyde Starch Schiff Base Derivatives. STARCH-STARKE 2021. [DOI: 10.1002/star.202100178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhenbiao Li
- Guangxi Key Laboratory of Electrochemical and Magneto‐chemical Function Materials College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 China
| | - Xiaojuan Wang
- Guangxi Key Laboratory of Electrochemical and Magneto‐chemical Function Materials College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 China
| | - Jincheng Miao
- Guangxi Key Laboratory of Electrochemical and Magneto‐chemical Function Materials College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 China
| | - Lei Xing
- Guangxi Key Laboratory of Electrochemical and Magneto‐chemical Function Materials College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 China
| | - Shufen Zhang
- Guangxi Key Laboratory of Electrochemical and Magneto‐chemical Function Materials College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 China
- State Key Laboratory of Fine Chemical Dalian University of Technology Dalian 116024 China
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Wei Q, Feng L, Dong L, Jiao F, Qin W. Selective co-adsorption mechanism of a new mixed collector on the flotation separation of lepidolite from quartz. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125973] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Luo X, Lin Q, Wen S, Wang Y, Lai H, Qi L, Wu X, Zhou Y, Song Z. Effect of Sodium Dodecyl Sulfonate on the Foam Stability and Adsorption Configuration of Dodecylamine at the Gas-Liquid Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1235-1246. [PMID: 33434429 DOI: 10.1021/acs.langmuir.0c03248] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, the effect of sodium dodecyl sulfonate (SDS) on the foam stability of dodecylamine (DDA) and on its adsorption configuration at the gas-liquid interface was investigated. Froth stability experiments, surface tension measurements, time-of-flight secondary-ion mass spectrometry measurements, and molecular dynamics simulation calculations were performed in this investigation. The results revealed that the foam stability of DDA solution was extremely strong, and the addition of SDS could decrease the foam stability when the concentration of DDA was less than a certain value. The decrease in foam stability could be ascribed to several reasons, namely, the big cross-sectional area of SDS at the gas-liquid interface and low adsorption capacity of surfactants at the gas-liquid interface, the high surface tension, the change in the double-layer structure, the small thickness of the gas-liquid interfacial layer, the weak interaction intensity between the head groups of the surfactants and the water molecules, the strong movement ability of the water molecules around the head groups, and the sparse and less upright arrangement configuration of molecules at the gas-liquid interface. These findings can greatly help in solving the strong foam stability problem in DDA flotation and provide a method for reducing foam stability.
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Affiliation(s)
- Ximei Luo
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
| | - Qiqiang Lin
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Shuming Wen
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
| | - Yunfan Wang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Hao Lai
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Linping Qi
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Xuetong Wu
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Yongfeng Zhou
- Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Zhenguo Song
- State Key Laboratory of Mineral Processing Science and Technology, BGRIMM Technology Group, Beijing 100160, China
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The effect of selective adsorption of dissolved aegirite species on the separation of specularite and aegirite. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.08.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Amphiphilic cellulose and surfactant mixtures as green frothers in mineral flotation. 2. Flotation of chalcopyrite and Cu-containing tailings. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125298] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Surface Properties and Floatability Comparison of Aegirite and Specularite by Density Functional Theory Study and Experiment. MINERALS 2019. [DOI: 10.3390/min9120782] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Understanding the differences in surface properties between aegirite and specularite is of great significance to study their separation. In this work, the surface properties of aegirite and specularite, as well as their relationships to floatability, have been explored by first principle calculation, flotation, and Zeta potential measurement. The surface relaxation indicated that the specularite (001) surface appeared to show more surface reconstruction. The unsatisfied bond properties, Mulliken bond population, and surface charge showed that the floatability of specularite was superior to that of aegirite. The flotation results showed that the hydrophobicity of specularite was higher than that of aegirite with dodecylamine (DDA) as the collector. It is infeasible to separate specularite from aegirite by flotation using starch as the depressant, and research of effective reagents with high affinity to the element Si is the subclinical breakthrough point of specularite/aegirite separation.
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