Study on the mechanism of action of various metal ions on the surface of monazite

• Autorzy: Liu Rongxiang , Yang Zhanfeng , Li Jie , Cao Zhao , Li Qiang , Li Jichuan

Identyfikatory

DOI

10.37190/ppmp/185901

• Języki publikacji: EN

Abstrakty

EN

By studying the various metal ions released from the grinding process, and conducting the flotation test of monazite and symbiotic ore, using zeta potential measurements and FTIR infrared spectrum analysis methods, the influence of metal ions on the surface of monazite and the mechanism of action are obtained. The results showed that the main metal ions in the flotation environment of monazite are Ca2+, Ba2+, and Fe3+. When the pulp pH value was 8, Ca2+, Fe3+, and Ba2+ concentration was 3×10-4 mol/dm3, 3×10-5 mol/dm3, and was 2×10-4 mol/dm3 respectively, and OHA collector dosage was 5×10-4 mol/dm3, while the flotation recoveries of monazite, calcite. And fluorite was above 95 %, 40.43 %, and below 45.32 %, and the recovery rate of barite and bastnaesite in the presence of Ca2+ and Fe3+ is below 54.32 % and 38.68 %, respectively and the effective separation of monazite and symbiotic ore was obtained. The zeta potential measurements showed that when only metal ions are added to monazite, monazite (IEP) shifts to the right, and the negative charge on the surface of monazite decreases, which may be due to the positive charge of metal ions adsorbed on the surface of monazite, increasing the positive charge on the surface of monazite. When Ca2+, Ba2+, Fe3+, and OHA were added to the monazite pulp, the IEP of monazite moved to the left, and the negative charge of monazite shifted to the positive direction as a whole, indicating that Ca2+, Ba2+, and Fe3+ were adsorbed on the surface of monazite and increase the positive charge on the surface of monazite. When the pH value was 7 ~ 10, the surface of monazite was the same as that before and after the action of the agent, and both were negatively charged. At this time, OHA can still adsorb on the calcite, that was, the chemical affinity overcomes the same electric repulsion and adsorbs, so that the potential of the monazite after the action is reduced, which is chemical adsorption. The FTIR showed that when the metal ions Ca2+, Ba2+, and Fe3+ are added to activate the surface of monazite, the peak area of the organic functional group-CH2−CH3 at 3000-2800 cm−1 was enhanced, and a new peak appears at 1382 cm−1. The reason is that the N-O-H functional group of OHA collector was adsorbed on the surface of monazite, and a red shift (44 cm−1) occurs, and a new peak appears at 1454 cm−1. The reason is that the C-N functional group of OHA collector is adsorbed on the surface of monazite. The lone electron pair of the nitrogen atom of the amide group in the OHA forms chelates with Ca2+, Ba2+, and Fe3+ atoms, which further increases the adsorption amount of OHA. This showed that the adsorption of monazite surface by metal ions provides active sites for the adsorption of OHA collectors. These phenomena indicate that the adsorption capacity of OHA on the surface of monazite activated by Ca2+, Ba2+, and Fe3+ is enhanced and a stable five-membered ring metal chelate is formed. Combined with flotation results and zeta potential data, infrared spectroscopy analysis, the adsorption capacity of Ca2+, Ba2+, and Fe3+ activated monazite surface: Fe3+>Ca2+>Ba2+.

Słowa kluczowe

EN

flotation; monazite; octyl hydroxamic acid; associated mineral; metal ions

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2024
• Tom: Vol. 60, iss. 2
• Strony: art. no. 185901
• Opis fizyczny: Bibliogr. 36 poz., tab., wykr.

Twórcy

autor

Liu Rongxiang

• At the mining and coal School of Inner Mongolia University of Science and Technology, Baotou, 014010, China

autor

Yang Zhanfeng

• At the mining and coal School of Inner Mongolia University of Science and Technology, Baotou, 014010, China
• Baotou Rare Earth Research Institute, Baotou, 014010, China

autor

Li Jie

• In the rare-earth School of Inner Mongolia University of Science and Technology, Baotou, 014010, China

autor

Cao Zhao

• At the mining and coal School of Inner Mongolia University of Science and Technology, Baotou, 014010, China

autor

Li Qiang

• Baotou Rare Earth Research Institute, Baotou, 014010, China

autor

Li Jichuan

• At the mining and coal School of Inner Mongolia University of Science and Technology, Baotou, 014010, China

Bibliografia

• AI, G., CAI, X., BI, K., LI, J., TIAN, Y., ZHANG, R., 2017. Research progress on the effect of metal ions on mineral flotation behavior. Nonferrous Metals Science and Engineering, 8(06), 70-74.
• CAO, Z., ZHANG, Y., SUN, C., CAO, Y., 2014. Activation mechanism of serpentine by Cu(Ⅱ) and Ni(Ⅱ) ions in coppernickel sulfide ore flotation. The Chinese Journal of Nonferrous Metals, 24(2), 506−510.
• CHELGANI, S.C., RUDOLPH, M., LEISTNER, T., GUTZMER, J., PEUKER, U.A., 2015, A review of rare earth minerals fotation: monazite and xenotime, Int. J. Min. Sci. Technol. 25, 877–883.
• CHEN, P., ZHAI, J., SUN, W., HU, Y., YIN, Z., 2017. The activation mechanism of lead ions in the flotation of ilmenite using sodium oleate as a collector. Minerals Engineering, 111, 100-107.
• CHEN, J., ZHU, Y., 2021. Study of semi-constrained properties of metal on mineral surface of flotation system. Journal of China University of Mining & Technology, 50(06), 1181-1188.
• CHENG, T.W., HOLTHAM, P.N., TRAN, T., 1993, Froth fotation of monazite and xenotime, Miner. Eng. 6, 341–351.
• DAI, H., TANG, D., DU, W., WANG, F., 2020. The effect of metal cations on flotation behavior of barite. Acta Mineralogica Sinica, 40(05), 595-600.
• DONG, L., FEN, J., QIN, W., ZHU, H., JIA, W., 2019. Activation effect of lead ions on scheelite flotation: Adsorption mechanism, AFM imaging and adsorption model. Separation and Purification Technology, 209, 955-963.
• ESPIRITU, E.R.L., NASERI, S., WATERS, K.E., 2018, Surface chemistry and fotation behavior of dolomite, monazite and bastnasite in the presence of benzo hydroxamate, sodium oleate and phosphoric acid ester collectors, Colloids Surfaces Physicochem. Eng. Asp. 546, 254–265.
• ESPIRITU, E.R.L., DA SILVA, G.R., AZIZI, D., LARACHI, F., WATERS, K.E., 2019, Flotation behavior and electronic simulations of rare earth minerals in the presence of dolomite supernatant using sodium oleate collector, J. Rare Earth 37, 101–112.
• GAO, Y., GAO, Z., SUN, W., 2017. Research progress of influence of metal ions on mineral flotation behavior and underlying mechanism. The Chinese Journal of Nonferrous Metals, 27(04), 859-868
• JIN., J., MILLER, J.D., DANG, L.X., WICK, C.D., 2015, Effect of Cu2+ activation on interfacial water structure at the sphalerite surface as studied by molecular dynamics simulation. International Journal of Mineral Processing, 145, 66−76.
• LIU, M., CAO, Y., LUO, J., FAN, Z., LIU, X., LI, M., XING, Y., GUI, X., 2021. Effect of metal cations on the electrostatic interaction between hydrophilic particles. Journal of China University of Mining & Technology, 50(03), 442-448.
• MOONCHUL, J., BOGALE, T., CRAIG, D., 2022. Influence of monovalent and divalent cations on monazite flotation. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 653, 129975.
• NIE, Q., 2022. Study on the selective inhibition mechanism of fluorite and barite in the flotation of cerite. China University of Mining and Technology.
• QIN, Y., LI, N., WANG, Q., MA, Y., 2021. Technological Mineralogy of Rare Earth in Bayan Obo Iron Tailing. Journal of the Chinese Society of Rare Earths, 39(05), 796-804.
• RAN, X., GAO, H., REN, Z., YU, F., QIAN, Y., 2017. Effect and Mechanism of Barium Ion on the Flotation of Fluorite, Barite and Calcite. Non-Metallic Mines, 40(06), 73-75.
• SHU, K., XU, L., WU, H., FANG, S., WANG, Z., XU, Y., ZHANG, Z., 2019. Effects of ultrasonic pre-treatment on the flotation of ilmenite and collector adsorption. Minerals Engineering, 137, 124−132.
• SHU, K., XU, L., WU, H., TANG, Z., LUO, L., YANG, J., XU, Y., FENG, B., 2020. Selective flotation separation of spodumene from feldspar using sodium alginate as an organic depressant. Separation and Purification Technology, 248, 117122.
• TANG, J., HE, J.，LU, X., ZHU, W., 2023, Effect of Ce3+ in sodium oleate oystem on flotation of fluorite and galcite. Mining and Metallurgical Engineering, 43(02), 48-51.
• TIAM, M., GAO, Z., SUN, W., HAN, H., SUN, L., HU, Y., 2018. Activation role of lead ions in benzohydroxamic acid flotation of oxide minerals: New perspective and new practice. Journal of Colloid and Interface Science, 529, 150-160.
• TIAN, M., LIU, R., GAO, Z., CHEN, P., HAN, H., WANG, L., ZHANG, C., SUN, W., HU, Y., 2018, Activation mechanism of Fe(III) ions in cassiterite flotation with benzohydroxamic acid collector. Minerals Engineering, 119, 31-37.
• WANG, M., 2022, Adsorption characteristics of lead ions on the surface of smithsonite and its influence mechanism on sulfide flotation. Kunming university of science and technology.
• WANG, P., CAO, Y., WANG, J., ZHANG, Y., CAO, Z., 2022. Flotation effect and quantum chemical calculation of octyl hydroxamic acid and sodium silicate on bastnaesite and fluorite. The Chinese Journal of Nonferrous Metals, 32(12), 3853-3861.
• WANG, J., LIU, R., JING, M., HAN, S., 2023. Research Progress on Mineral Interaction in Flotation System Composed of Calcite and Its Associated Minerals. Nonferrous Metals Engineering, 13(04), 78-87.
• WANG, C., SHI, H., QIU, X., HU, Z., 2023. Difference in Flotation Behavior Between Fine-Grained Bastnaesite and Barite. Journal of the Chinese society of rare earths, 13(04), 78-87.
• XIANG, Y., XINYANG, Y., YUHUI, Z., 2022. Behavior and Mechanism of a Novel Hydrophobic Collector in the Flotation of Bastnaesite. Minerals, 12(7), 817.
• XUE, L.H., 2003, Study on vibrational spectra of monazite in Bayan Obo. Journal of Wuhan University of Technology, 25(10), 1-3.
• YU, Y., SONG, L., ZHOU, S., SUN, C., 2015. Influence of multivalent metal cations on flotability of several calcium salt minerals. Industrial Minerals & Processing, 44(9), 9-13.
• ZHANG, W., HONAKER, R.Q., 2018, Flotation of monazite in the presence of calcite part II: enhanced separation performance using sodium silicate and EDTA, Miner. Eng. 127, 318–328.
• ZHANG, W., HONAKER, R.Q., GROPPO, J.G., 2017, Flotation of monazite in the presence of calcite part I: calcium ion effects on the adsorption of hydroxamic acid, Miner. Eng. 100, 40–48.
• ZHANG, Z., TENG, C., ZHOU, K., PENG, C., CHEN, W., 2020. Degradation characteristics of dissolved organic matter in nanofiltration concentrated landfill leachate during electrocatalytic oxidation. Chemosphere, 255, 127055.
• ZENG, W., ZHANG, Q.F., SHI, Q., 2022, Effects and mechanism of Fe3+ on flotation separation of feldspar and epidote with sodium oleate at natural pH. Separations, 9, 110.
• ZHENG, R., 2020. Study on flotation behavior and mechanism of fluorite with different defect types. Wuhan University of Technology,2020.
• ZHENG, Q., QIAN, Y., ZOU, D., 2021, Surface mechanism of Fe3+ ions on the improvement of fine monazite flotation with octyl hydroxamate as the collector. Frontiers in Chemistry, 9, 700347.
• ZHENG, Q., QIAN, Y., ZOU, D., WANG, Z., BAI, Y., DAI, H., 2021. Surface Mechanism of Fe3+ Ions on the Improvement of Fine Monazite Flotation with Octyl Hydroxamate as the Collector. Frontiers in Chemistry, 9, 700347