chalcopyrite flotation chalcopyrite
A Novel Bipolar Surfactant, BETX, for Selective Flotation of
ResultA Novel Bipolar Surfactant, BETX, for Selective Flotation of Chalcopyrite: Folding-Synergistic Mechanism Based on Intramolecular Weak …
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Investigating the selectivity of a xanthate derivative for the
ResultThe chalcopyrite flotation recoveries were 93.94% for HEIBX and 89.27% for SIBX at concentrations of 4 × 10 −5 mol·L −1, which indicates that HEIBX has a stronger collecting ability for chalcopyrite than SIBX, in agreement with the DFT results. The flotation results for pyrite using the two collectors are quite …
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Chalcopyrite Flotation without Collector
ResultThe influence factors lie in the grinding condition, pH value of flotation and the pulp potential. On conditions of grinding with ceramic ball mill and pH = 9, the lower limit of pulp potential was 50-100 mV and the upper limits 300 mV (galena) and 600 mV (chalcopyrite) in the collectorless flotation of these two kinds of minerals.
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Collectorless flotation of chalcopyrite and sphalerite ores …
ResultThe flotation of chalcopyrite and sphalerite from copper and copper-zinc ores has been achieved without using thiol-type collectors. Typically, a sulfide ore sample is first treated with sodium sulfide either during grinding or during the preflotation conditioning period, and then the chalcopyrite is floated with frother …
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Selective Adsorption Mechanism of Ferric Ions on the …
ResultMicro-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 …
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Selective flotation of chalcopyrite from pyrite via seawater …
ResultTherefore, 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 …
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Flotation performance of chalcopyrite in the presence of …
Result1. 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 …
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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
ResultIn 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 copper mineral in nature. In particular, the effect caused by the presence of pyrite, a non-valuable mineral, but …
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A fundamental study of chalcopyrite flotation in sea water …
ResultChalcopyrite (CuFeS 2) is an important and abundant cupriferous mineral, accounting for 70% of copper resources on Earth (Córdoba et al., 2008, Li et al., 2013).The commonly used technology for copper-bearing ore separation is froth flotation (Liu et al., 2019a, Liu et al., 2019b, Liu et al., 2017).As flotation is a …
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Effects of Xanthate on Flotation Kinetics of Chalcopyrite and …
ResultThis paper investigated the effects of using or not using potassium butyl xanthate (PBX) as a collector on the flotation kinetics of talc and chalcopyrite. By means of atomic force microscopy (AFM), Fourier-transform infrared spectroscopy (FTIR), a contact angle measuring instrument and particle size analyzer, the …
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A Quantitative Relationship between Oxidation Index and Chalcopyrite …
ResultChalcopyrite, as the most abundant and widespread copper-bearing mineral (accounting for nearly 70% of the Earth's copper), is a primary source of copper [1,2,3].Froth flotation is the most often used method to obtain chalcopyrite from natural ores due to its natural floatability stemming from different surface …
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The role of HABTC's hydroxamate and dithiocarbamate groups in
ResultThe 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 …
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The role of sodium metabisulphite in depressing pyrite in chalcopyrite …
ResultPyrite recovery (a) and copper grade (b) versus chalcopyrite recovery in the flotation of chalcopyrite mixed with pyrite using seawater at pH 8.5 with MBS added in the mill before grinding. In addition, when mineral particles are present in saline water such as seawater, the adsorption of salt ions on mineral surfaces will …
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Minerals | Free Full-Text | A Study of Temperature Effect on …
ResultA multi-scale investigation was conducted to study the surface properties of xanthate-absorbed chalcopyrite at elevated temperature to understand the temperature effect on the xanthate's performance during chalcopyrite flotation. Firstly, a macro-scale study was initiated to investigate the temperature …
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Effects of coarse chalcopyrite on flotation behavior of fine
ResultCarrier-flotation is a method to enhance the recovery by the attachment of fine particles onto larger carrier particles. In this study, the effects of coarse chalcopyrite particles as a carrier on flotation behavior of fine chalcopyrite was investigated by the flotation experiments using 20 g fine chalcopyrite …
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Effects of grinding media on grinding products and flotation
ResultThe chalcopyrite flotation performance as a function of sodium butyl xanthate dosage is shown in Fig. 9 a. The results show that chalcopyrite remained recoverable in the absence of sodium butyl xanthate due to its natural floatability. However, the chalcopyrite recoveries from the CB and CIB media grinding …
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Selective Separation of Chalcopyrite from Pyrite Using …
ResultFlotation 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 …
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A case study of flotation of chalcopyrite-molybdenite ore …
ResultFlotation efficiency of chalcopyrite (ccp) and molybdenite (mlb) was improved by grounding the samples to obtain fine-grained particles (Fig. 4). Fig. 4 (a) and 4(b) illustrate the traditional chalcopyrite-molybdenite-pyrite (ccp-mlb-pyr) bulk flotation and the new ccp-mlb instant flotation, respectively.
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Minerals | Free Full-Text | Flotation of Chalcopyrite and Molybdenite
ResultThe results of chalcopyrite and molybdenite flotation and OM adsorption (Figure 5 and XPS study) on these two minerals indicate that, first, OM adsorption is the cause of the depression of mineral flotation in agreement with similar observations that the adsorption of hydrophilic macromolecules such as humic acid, lignosulfonate, …
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Electrochemical bioleaching of high grade chalcopyrite flotation
ResultA representative copper sulfide flotation concentrate, obtained from Sarcheshmeh Copper Mine (Kerman, Iran) was used in all experiments. X-ray fluorescence (XRF) and X-ray diffraction (XRD) analyses of the sample showed 27.73% Cu, 24.59% Fe, 14.82% S, 0.99% Zn and chalcopyrite (CuFeS 2) as the …
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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
ResultThe flotation of chalcopyrite and talc remained above 90% (pH = 2–12), but adding xanthan gum, the chalcopyrite depressed in acid conditions, …
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Flotation performances and surface properties of …
ResultChalcopyrite flotation. XPS. Introduction. Wet ball milling prior to flotation is generally employed in beneficiation plants of copper sulfide ores. The …
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Highly selective flotation separation of chalcopyrite and …
ResultSingle 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 …
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A fundamental study of chalcopyrite flotation in sea water …
ResultChalcopyrite flotation recovery was significantly decreased in sea water, primarily due to Mg 2+. • Sodium silicate improved chalcopyrite flotation …
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Froth Flotation of Chalcopyrite/Pyrite Ore: A …
Resultchalcopyrite flotation; pyrite depressants; mineral oxidation; collector adsorption; pH modifiers; modern collectors. 1. Properties and Structure of Chalcopyrite. Natural chalcopyrite …
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Froth Flotation of Chalcopyrite/Pyrite Ore: A …
ResultIn a chalcopyrite and pyrite flotation system, the effect and mechanism of organic depressant sodium dimethyl dithiocarbamate on the hydrophobicity of chalcopyrite and pyrite …
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Investigation the effect of filling materials on chalcopyrite flotation
ResultThe effect of varying the filling material mixing rate on chalcopyrite flotation was investigated. The amount of chalcopyrite was fixed at 2 g, and on this basis, different amounts of filling were mixed, and the amount of filling material was changed to 0%, 3%, 6%, 9%, 12%, 15%, 18%, 21%, and 24%.
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Enhancing flotation separation of chalcopyrite and …
ResultSeparation effects of sodium polyacrylate (PAAS) and gum Arabic (GA) on flotation of chalcopyrite and magnesium silicate minerals using …
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Selective depression mechanism of locust bean gum in the flotation …
ResultFlotation behaviors of single minerals of chalcopyrite or pyrite as a function of SBX concentration (pH = 8.0). As shown in Fig. 4, the increase of LBG concentration showed no pronounced effect on the flotation recovery of chalcopyrite, even when the concentration of LBG reached a maximum of 200 …
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New discovery of unavoidable ions source in chalcopyrite flotation …
ResultFlotation plants have acted on this principle, judiciously introducing reducing agents to suppress metal ion release (Finch et al., 2007). In the opposite sense, ... It is a new discovery of unavoidable ions source in chalcopyrite flotation pulp: fluid inclusions. According to the evidence that in the case was …
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