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chalcopyrite flotation chalcopyrite
Enhancing flotation separation of chalcopyrite and
Enhancing flotation separation of chalcopyrite and magnesium silicate minerals by surface synergism between PAAS and GA Zhiqiang Chen, Yanhong Wang, It suggests that the presence of pyrite enhances chalcopyrite flotation. This may be caused by the galvanic interaction and surface oxidation, and will be further The separation of chalcopyrite and chalcocite from pyrite in
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A Quantitative Relationship between Oxidation
The surface oxidation of chalcopyrite is one of the most important factors affecting its flotation performance.The effect of PMA–EDTC on the floatability of galena and chalcopyrite was investigated through micro-flotation and Contact angle measurements. The Minerals Free Full-Text Utilization of PMA-EDTC as a Novel
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Selective flotation of chalcopyrite from pyrite via seawater
The micro-flotation results of single minerals indicated that seawater oxidation significantly improved the difference in flotation recovery between chalcopyrite High level Eh or dissolved oxygen provides more energies to prompt the collector-induced and self-induced flotation of chalcopyrite [10]. Moreover, the Eh 290 Flotation performances and surface properties of chalcopyrite
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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
The flotation of chalcopyrite and talc remained above 90% (pH = 2–12), but adding xanthan gum, the chalcopyrite depressed in acid conditions, recovering 10% at The flotation test results indicated that chalcopyrite and molybdenite had high recoveries of more than 90% and 80%, respectively, in the tested pH range of 4–12; Flotation separation of molybdenite from chalcopyrite using
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Selective Separation of Chalcopyrite from Pyrite Using
Flotation separation of chalcopyrite from pyrite using lime or cyanides as depressants results in serious problems, such as the blockage of pipelines and environmental pollution. Eco-friendly organics are a future trend for beneficiation plants. In this research, the eco-friendly organic depressant sodium humate (SH) was chosen as a Micro-flotation Tests The Influence of pH on Mineral Flotation. For sulfide ore flotation, the pH of the pulp is very important for flotation recovery. 11,29 Figure 2 demonstrates the flotation recovery of chalcopyrite and pyrite, with or without treatment by ferric ions, when the pH changes. When no iron ions are added, the recovery of Selective Adsorption Mechanism of Ferric Ions on the
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Selective flotation of chalcopyrite from pyrite via seawater
DOI: 10.1016/j.ijmst.2023.08.004 Corpus ID: 263239832; Selective flotation of chalcopyrite from pyrite via seawater oxidation pretreatment @article{Li2023SelectiveFO, title={Selective flotation of chalcopyrite from pyrite via seawater oxidation pretreatment}, author={Wanqing Li and Yubiao Li and Zhonghong Wang and Xu Yang and Wen Chen}, In this work, we applied the technology of magnetic treatment to the flotation of chalcopyrite. The mechanism of the effect of pre-magnetized butyl xanthate on chalcopyrite flotation was studied using monomineral flotation tests, adsorption tests, conductivity tests, Fourier transform infrared spectroscopy (FTIR), etc. The monomineral Minerals Free Full-Text The Mechanism of the Effect of Pre
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Collectorless flotation of chalcopyrite and sphalerite ores by
Flotation of chalcopyrite Two preliminary flotation tests were conducted in parallel on Texasgulf Type-A ore. In both tests, the ore (-10 mesh) was ground for 20 min in the presence of 0.84 kg/ton of Na2 S and floated with 0.04 kg/ton of Dowfroth 250. The only difference between the two tests was the pH.Flotation separation of chalcopyrite and molybdenite is an enormous challenge faced by mineral processing, since chalcopyrite is usually closely associated with molybdenite in porphyry copper-molybdenum deposits. Similar flotability of chalcopyrite and molybdenite caused by the residual of pre-adsorbed xanthate on the surface of Flotation separation of molybdenite from chalcopyrite using
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Highly selective flotation separation of chalcopyrite and
Single mineral (chalcopyrite and pyrite) flotation experiments were performed to compare the flotation performance of three collectors SIBX, DTC and MDPE. Fig. 4 presents the influence of pH on the flotation recovery of chalcopyrite (Fig. 4 A) and pyrite (Fig. 4 B) at the dosage of 2 × 10-5 mol/L SIBX, DTC and MDPE. The dosage of Galena (PbS) and chalcopyrite (CuFeS<sub>2</sub>) are sulfide minerals that exhibit good floatability characteristics. Thus, efficiently separating them via common flotation is challenging. Herein, a new method of surface sulfuric acid corrosion in conjunction with flotation separation was proposed, and the efficient separation of galena Separation of galena and chalcopyrite using the difference in
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(PDF) A Study of Temperature Effect on the Xanthate’s
In the experiments, pure chalcopyrite samples were used for contact angle measurement, Hallimond tube microflotation, AFM and FTIR; and copper ore samples (1.51% Cu, 5.88% Fe 0.029% Mo, 5.23% S inCurrent flotation practices using lime or cyanide as depressants in chalcopyrite and pyrite separation have significant disadvantages, such as substantial reagent consumption, high slurry pH, and environmental hazards. This work aimed to explore the utilization and mechanisms of tannic acid (TA) as an eco-friendly alternative Utilization and Mechanisms of Tannic Acid as a Depressant
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Minerals Free Full-Text Application of Maleic Acid&ndash
Environmentally achieving the flotation separation of chalcopyrite and galena is always a difficult problem due to the similar floatability of the two minerals. To conquer the problem, maleic acid–acrylic acid copolymer (MA/AA), an eco-friendly reagent, was applied as a potential depressant for flotation separation of chalcopyrite from galena In the present work an intense bibliographic search is developed, with updated information on the microscopic fundamentals that govern the behavior of flotation operations of chalcopyrite, the main Froth Flotation of Chalcopyrite/Pyrite Ore: A
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Effect of Electrochemical Interaction between Chalcopyrite
The mechanism of electrochemical interaction between chalcopyrite and hexagonal pyrrhotite was analyzed via electrochemical interaction, copper ion concentration testing, and X-ray photoelectron spectroscopy (XPS) characterization. Besides, the effect of electrochemical interaction between the two minerals on the flotation separation was In this work, we applied the technology of magnetic treatment to the flotation of chalcopyrite. The mechanism of the effect of pre-magnetized butyl xanthate on chalcopyrite flotation was studied using monomineral flotation tests, adsorption tests, conductivity tests, Fourier transform infrared spectroscopy (FTIR), etc. The monomineral Minerals Free Full-Text The Mechanism of the Effect of Pre
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The effect of sodium isobutyl xanthate on galena and chalcopyrite
However, in the operating pH conditions usually expected for galena and chalcopyrite flotation (pH 7 pH 10), the fastest decomposition was observed at pH 7. Grano et al. (1997a) suggest that the observed fast decomposition around pH 7 is indicative of the presence of HSO 3-in solution, which catalyses SIBX decomposition.Environmentally friendly, flexible and affordable flotation depressants are needed due to the depletion of easy-to-process high-grade ores as well as sustainability and environmental concerns. This paper discusses various organic depressants that have been adopted for selective depression of unwanted minerals in chalcopyrite flotation.Eco-Friendly and Biodegradable Depressants in Chalcopyrite Flotation
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Flotation performance of chalcopyrite in the presence of an
Introduction. Chalcopyrite (CuFeS 2) is one of the primary copper sulphide minerals and it accounts for 70–80% of the global copper (Cu) reserves (Baba et al., 2012, Nyembwe et al., 2019, Schlesinger et al., 2011).Froth flotation is usually applied to concentrate copper ores and separate copper minerals from the gangue. Currently, there High level Eh or dissolved oxygen provides more energies to prompt the collector-induced and self-induced flotation of chalcopyrite [10]. Moreover, the Eh 290 mV at pH 10 obtained in position B was an appropriate potential for chalcopyrite flotation, consistent with the studies of Heyes and Basilio [11]. Particle size analysesFlotation performances and surface properties of chalcopyrite
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Selective flotation of chalcopyrite from pyrite via seawater
Therefore, chalcopyrite flotation is commonly carried out under alkaline condition to reduce the decomposition of xanthate [7]. However, the flotation process faces many challenges, especially when low-grade ores frequently associated with other sulfides such as pyrite (FeS 2), deteriorating chalcopyrite flotation [8]. Therefore, maintaining aThe chunk chalcopyrite samples were artificially crushed and ground in an agate mortar by a pestle, and then dry-screened. The fraction with a diameter ranging from 38 to 76 μm was adopted for flotation and adsorption tests.After being washed 3 times (1 min per time) in distilled water under an ultrasonic bath, the chalcopyrite fraction was The role of HABTC’s hydroxamate and dithiocarbamate groups in
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