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The selective separation of scheelite from fluorite is difficult because of their similar surface properties. In this study, diethylenetriaminepentaacetic acid (DTPA) was used as a novel depressant for the efficient removal of fluorite from scheelite, and its depression effect and mechanism were systematically investigated by conducting micro …
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In this paper, a novel triazine-thiol collector, 2-diethylamine-4-hydroxy-1,3,5-triazine-6-thiol (DEHTT) was introduced in flotation separation of chalcopyrite from sphalerite. Based on the experimental findings and analyses, the conclusions could be …
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The investigation of the intrinsic connections and macroscopic regularities between the crystal structure, sulfidation, and floatability of lead–zinc oxide minerals can contribute to the development and utilization of refractory lead–zinc oxide ores. ... As a critical component of flotation separation, although the research and industrial ...
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The single mineral flotation results indicated the potential for selective separation of chalcopyrite from sphalerite in the presence of GPE. To further investigate this potential, artificial mixtures of chalcopyrite and sphalerite (1:1 wt ratio) were studied at pH 9 with varying dosages of GPE, while keeping the collector concentration fixed ...
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In this work, we synthesize a new type of Gemini surfactant (hexane-1,6-didodecyldimethylammonium bromide, HDDA) to be used for the first time as a collector for the froth flotation separation of scheelite from calcite.Micro-flotation experiments with HDDA show the recovery efficiency of scheelite greater than 91% (maximum value of …
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An integrated experimental and computational investigation of N,9,10-trihydroxyoctadecanamide as a potential collector for the flotation separation of fluorite and calcite. Author links open overlay panel Zhihao Guo a b, Peng Liu a, Weidi Zhang a, Mengjie Tian a b, Zhiyong Gao a, Wei Sun a. Show more.
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@article{Duan2021InvestigationOF, title={Investigation on flotation separation of bastnaesite from calcite and barite with a novel surfactant: Octylamino-bis-(butanohydroxamic acid)}, author={Hao Duan and Wengang Liu and Xinyang Wang and Xiao Wei Gu and Wenhan Sun and Xiangyu Peng and Huiji Yue}, journal={Separation …
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Introduction. Flotation is an efficient method for mineral separation [1]. The complex gas–liquid-solid three-phase flow in a flotation device directly affects the flotation efficiency, with the help of CFD (computational fluid dynamics), it is possible to predict the flotation rate constant of a flotation device and thus have the potential to identify …
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The recovery of scheelite from calcium-bearing carbonate ores by flotation is challenging due to its low separation efficiency. This study investigated the effect of pentasodium …
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1. Introduction. Over 21 Mt copper were produced annually worldwide in 2021, Chalcopyrite is the major mineral for smelting copper, it is closely associated with pyrite [1].To obtain a copper concentrate for smelting, flotation separation of chalcopyrite and pyrite must be carried out [2].At present, xanthate is widely used as a collector in …
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In order to improve the flotation separation efficiency of bastnaesite from barite and calcite, a novel collector, octylamino-bis-(butanohydroxamic acid) (OBHA), with large molecular structure and ...
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S. Ilhan, A.O. Kalpakli, C. Kahruman, and I. Yusufoglu, The investigation of dissolution behavior of gangue materials during the dissolution of scheelite concentrate in oxalic acid solution, Hydrometallurgy, 136(2013), p. 15. ... The flotation separation of fluorite from calcite using hydroxypropyl starch as a depressant, Colloids Surf. A ...
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Compared with the separation of sulfide ores by flotation, the separation of oxidized ore by flotation is more sensitive to the type and concentration of flotation reagents and the flotation environment, such as pH and metal ions [7, 8]. Oxide minerals exhibit favourable hydrophilicity and form a hydration layer in solution, which hinders the ...
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Flotation constitutes a separation process that originated from mineral processing. Nowadays, wider applications have been found and compared to flotation for water and wastewater treatment. Stress in the present review paper was mainly applied to heavy metal ions recovery by flotation and the respective mechanism followed, being …
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A novel collector IBATC was synthesized and used in the flotation separation of chalcopyrite, pyrite and sphalerite. IBATC can effectively separate chalcopyrite from sphalerite and pyrite with pH of 9.5–10 and concentrate of 30–40 mg/L. IBATC chemically adsorbed on chalcopyrite surface, whereas physically adsorbed on sphalerite and pyrite …
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Literature reports that it is preferable to use an alkaline pH for the flotation and separation of carbonate minerals to reduce the high mineral dissolution in acidic pH where dissolved species (Ca and Mg) could consume collectors in solution, adsorb or precipitate indiscriminately on all mineral surfaces, which all reduce mineral flotation …
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Flotation selectively concentrates target minerals based on their physicochemical properties and differences resulting from the intrinsic properties of ores and modification of flotation reagents, which is one of the most efficient and widely employed mineral processing methods in the separation of iron ores (Zhang et al., 2019).
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However, the previous investigations of bastnaesite-calcite flotation system revealed that octanohydroxamic acid (OHA) ... The flotation separation of artificially mixed minerals afforded the concentrate with 69.26% REO grade and 89.49% REO recovery, indicating the OMHA has excellent selectivity of bastnaesite over calcite. ...
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Consequently, artificial binary mixed ore flotation studies of apatite and dolomite were conducted to investigate its selectivity and separation effect due to the varied flotation behavior of mixed ore. Fig. 6 shows the flotation results of mixed minerals (apatite: dolomite = 8:2) at NaOL=7.5 × 10-5 mol/L and pH 9.0. It can be observed that ...
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Aluminosilicate minerals (e.g., spodumene, albite) have complex crystal structures and similar surface chemistries, but they have poor selectivity compared to traditional fatty acid collectors, making flotation separation difficult.Previous research has mainly considered the mineral crystal structure as a whole. In contrast, the surface …
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Therefore, the pH for flotation separation of chalcopyrite against pyrite with BN was much lower than that with sodium isobutyl xanthate, reducing lime consumption and carbon emission. Graphical abstract. ... Investigation on the flotation behavior and adsorption mechanism of 3-hexyl-4-amino-1,2,4-triazole-5-thione to chalcopyrite. Miner. …
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In this study, a novel organic depressant maleyl 5-amino-1,3,4-thiadiazole-2-thiol (MATT) was synthesized and utilized as a galena depressant in the flotation separation of molybdenite and galena.
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1. Introduction. Flotation is an efficient method for mineral separation [1].The complex gas–liquid-solid three-phase flow in a flotation device directly affects the flotation efficiency, with the help of CFD (computational fluid dynamics), it is possible to predict the flotation rate constant of a flotation device and thus have the potential to identify …
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Most flotation separation processes of apatite utilize fatty acids as collectors, and the main technical challenge lies in finding efficient and environmentally friendly inhibitors. ... An investigation into the selective separation and adsorption mechanism of a macromolecular depressant in the galena-chalcopyrite system. Minerals …
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Investigation on the selectivity of N-((hydroxyamino)-alkyl) ... These well explained the sequential flotation separation of barite, fluorite and calcite at pH ∼ 9.0 and 11.0. This work also provided the adhesion force criterion for designing and developing collectors, as well as the flotation separation conditions including the pulp pH ...
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The flotation separation between chalcopyrite and galena, however, presents much challenges in industrial productions and laboratory-scale experimental investigations [9], [10], [11]. This phenomenon can be attributed to the homogenized surface features and extremely similar floatability during grinding and after exposure to collector [8], [12] .
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DOI: 10.1016/j.carbpol.2020.116334 Corpus ID: 218965681; Investigation of the specularite/chlorite separation using chitosan as a novel depressant by direct flotation. @article{Li2020InvestigationOT, title={Investigation of the specularite/chlorite separation using chitosan as a novel depressant by direct flotation.}, author={Mingyang Li and Jun …
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DOI: 10.1016/j.colsurfa.2021.127571 Corpus ID: 240599473; Investigation on the flotation separation of smithsonite from calcite using calcium lignosulphonate as depressant @article{Sun2021InvestigationOT, title={Investigation on the flotation separation of smithsonite from calcite using calcium lignosulphonate as depressant}, …
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1. Introduction. Chalcopyrite (CuFeS 2), which is a typical copper sulfide mineral, often coexists with other sulfide and non-sulfide gangue minerals, and froth flotation is the paramount method to separate the chalcopyrite from other gangue minerals prior to smelting (Agorhom et al., 2015, Li et al., 2019, Liu et al., 2019, Wei et al., …
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minerals Article Investigation on a Novel Galena Depressant in the Flotation Separation from Molybdenite Yangjia Hu 1, Zhiqiang Zhao 1,2, Liang Lu 1,3,4, Huanyu Zhu 5, Wei Xiong 1,3,4, Yangge Zhu ...
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