Tao Chen, Runqing Liu, Wenchao Dong, Min Wei, and Wei Sun, Differential adsorption of gum arabic as an eco-friendly depressant for the selective flotation of chalcopyrite from molybdenite, Int. J. Miner. Metall. Mater.,(2024). https://dx.doi.org/10.1007/s12613-024-2979-4
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The environment-friendly and efficient selective separation of chalcopyrite and molybdenite presents a challenge in mineral processing. In this study, Gum Arabic (GA) was initially proposed as a novel depressant for the selective separation of molybdenite from chalcopyrite in flotation processes. The micro-flotation results indicated that GA exhibited a stronger inhibitory capacity towards molybdenite rather than chalcopyrite. At pH 8.0 with the addition of 20 mg/L GA, the recovery of chalcopyrite in the concentrate obtained from mixed minerals flotation was 67.49% higher than that of molybdenite. Furthermore, the mechanism of GA was systematically investigated by various surface characterization techniques. The contact angle tests indicated that the hydrophobicity of molybdenite surface significantly decreased after GA treatment, while there was no apparent change in the hydrophobicity of chalcopyrite surface. The Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) results indicate that the interaction force between GA and chalcopyrite was weak. In contrast, GA primarily adsorbed onto the surface of molybdenite through chemical chelation, with hydrogen bonding and hydrophobic interactions also possibly contributing. Pre-adsorbed GA could prevent BX from adsorbing onto the molybdenite. Scanning electron microscopy energy dispersive spectroscopy (SEM-EDS) analysis further indicated that GA primarily adsorbed onto the "face" of molybdenite rather than the "edge". Therefore, GA could be a promising molybdenite depressant and provide flotation separation of Cu–Mo.
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Int. J. Miner. Metall. Mater., 2019, 26(8): 946-952.
Mehmet Deniz Turan.
Optimization of selective copper extraction from chalcopyrite concentrate in presence of ammonium persulfate and ammonium hydroxide
[J]. 矿物冶金与材料学报（英文版）.
DOI: 10.1007/s12613-019-1804-y
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Int. J. Miner. Metall. Mater., 2018, 25(10): 1123-1131.
Xiong Chen, Guo-hua Gu, Li-juan Li, Ren-feng Zhu.
The selective effect of food-grade guar gum on chalcopyrite-monoclinic pyrrhotite separation using mixed aerofloat (CSU11) as collector
[J]. 矿物冶金与材料学报（英文版）.
DOI: 10.1007/s12613-018-1663-y
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Int. J. Miner. Metall. Mater., 2018, 25(5): 489-497.
Jin-sheng Yu, Run-qing Liu, Li Wang, Wei Sun, Hong Peng, Yue-hua Hu.
Selective depression mechanism of ferric chromium lignin sulfonate for chalcopyrite–galena flotation separation
[J]. 矿物冶金与材料学报（英文版）.
DOI: 10.1007/s12613-018-1595-6
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Int. J. Miner. Metall. Mater., 2018, 25(5): 481-488.
Zhi-li Li, Feng Rao, Shao-xian Song, Yan-mei Li, Wen-biao Liu.
Slime coating of kaolinite on chalcopyrite in saline water flotation
[J]. 矿物冶金与材料学报（英文版）.
DOI: 10.1007/s12613-018-1594-7
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Int. J. Miner. Metall. Mater., 2018, 25(1): 1-10.
Qing-quan Lin, Guo-hua Gu, Hui Wang, You-cai Liu, Jian-gang Fu, Chong-qing Wang.
Flotation mechanisms of molybdenite fines by neutral oils
[J]. 矿物冶金与材料学报（英文版）.
DOI: 10.1007/s12613-018-1540-8
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Int. J. Miner. Metall. Mater., 2017, 24(8): 857-862.
Yong-zhong Zhang, Guo-hua Gu, Xiang-bin Wu, Kai-le Zhao.
Selective depression behavior of guar gum on talc-type scheelite flotation
[J]. 矿物冶金与材料学报（英文版）.
DOI: 10.1007/s12613-017-1470-x
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Int. J. Miner. Metall. Mater., 2016, 23(4): 380-388.
Farhad Khorramshahi Mohammadabad, Sina Hejazi, Jalil Vahdati khaki, Abolfazl Babakhani.
Mechanochemical leaching of chalcopyrite concentrate by sulfuric acid
[J]. 矿物冶金与材料学报（英文版）.
DOI: 10.1007/s12613-016-1247-7
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Int. J. Miner. Metall. Mater., 2015, 22(8): 777-787.
Hong-bo Zhao, Jun Wang, Xiao-wen Gan, Wen-qing Qin, Ming-hao Hu, Guan-zhou Qiu.
Bioleaching of chalcopyrite and bornite by moderately thermophilic bacteria: an emphasis on their interactions
[J]. 矿物冶金与材料学报（英文版）.
DOI: 10.1007/s12613-015-1134-7
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Int. J. Miner. Metall. Mater., 2013, 20(11): 1021-1028.
Alafara A. Baba, Kuranga I. Ayinla, Folahan A. Adekola, Rafiu B. Bale, Malay K. Ghosh, Abdul G. F. Alabi, Abdul R. Sheik, Ismael O. Folorunso.
Hydrometallurgical application for treating a Nigerian chalcopyrite ore in chloride medium: Part I. Dissolution kinetics assessment
[J]. 矿物冶金与材料学报（英文版）.
DOI: 10.1007/s12613-013-0829-x
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Int. J. Miner. Metall. Mater., 2010, 17(2): 127-131.
Reza Ebrahimi-Kahrizsangi, Mohammad Hasan Abbasi, Ali Saidi.
Molybdenite alkali fusion and leaching: reactions and mechanism
[J]. 矿物冶金与材料学报（英文版）.
DOI: 10.1007/s12613-010-0201-3
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