: The monomineral flotation test and microcalorimetry were used to study the flotation kinetics and thermodynamic behavior of chalcopyrite and pyrite in high alkaline systems of lime and NaOH. The results showed that in these systems there were less hydrophilic substances on the chalcopyrite surface, so that the apparent activation …
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WEBSingle mineral (chalcopyrite and pyrite) flotation experiments were performed to compare the flotation performance of three collectors SIBX, DTC and …
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In this study, κ-carrageenan (See Fig. 1) was employed as a depressant for the first time to selectively separate chalcopyrite from pyrite with sodium isobutyl xanthate (SIBX) as the collector.The depressing performance of κ-carrageenan was assessed through micro-flotation experiments. Additionally, the selective depression mechanism of κ …
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An artificial mixed minerals flotation test indicated that under the condition of pH=6.79 and IPXPO initial concentration 5×10−5 mol/L, the flotation recovery of chalcopyrite reached about 90% ...
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Grinding media have significant influence on the flotation of chalcopyrite and pyrite. This effect is mainly related to the change in the surface properties of chalcopyrite and pyrite. This paper investigates the influence of steel ball and nano-ceramic ball grinding on the floatability of chalcopyrite and pyrite. Flotation results, as well scanning electron …
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When copper ores containing pyrite are crushed and ground, many unavoidable Fe 3+ ions will be produced and enter the flotation process. At present, …
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Fig. 4 (c) shows the effect of pH on the floatability of chalcopyrite and pyrite. It was evident that T.f served as an effective depressant of pyrite to achieve flotation separation of chalcopyrite and pyrite under low alkaline conditions. Notably, the depression of pyrite required a large amount of lime (CaO), increasing the pulp pH value ...
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When copper ores containing pyrite are crushed and ground, many unavoidable Fe 3+ ions will be produced and enter the flotation process. At present, the adsorption mechanism of Fe 3+ on chalcopyrite and pyrite surfaces is not clear. Here, the adsorption behaviors of Fe 3+ on the surfaces of chalcopyrite and pyrite were systematically investigated by …
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[1] However, effective selectivity between chalcopyrite and pyrite can also be problematic in the flotation process due to inadvertent activation of pyrite by dissolved copper ions from copper ...
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Liao et al. Grinding Media Affects Flotation Behavior TABLE 2 | Grinding media, chemical compositions, densities. Media type Chemistry (wt.%) Density (g/cm3) Al2O3 C Steel ball 0.00 3.00 7.80
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separation of chalcopyrite and pyrite. For copper ore containing pyrite, Cu2+ ions will be generated during crushing and grinding. Under alkaline con-ditions, the copper ions will be adsorbed on the pyrite in the form of copper hydroxide, resulting in pyrite activation, and it becomes difficult to sepa-rate chalcopyrite from pyrite.9 Usually ...
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In flotation, regrinding is used to increase the liberation of value minerals, such as chalcopyrite, from gangue minerals. As a result of the significant decrease in particle size following ...
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ABSTRACT. The oxidative flotation separation of chalcopyrite from pyrite in weak alkaline seawater solution was investigated using potassium ferrate (K 2 FeO 4) …
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1 A comparative study on the influence of mono, di, and trivalent cations on the chalcopyrite and pyrite flotation Xiaolin Yang a, Xiangning Bu a,*, Guangyuan Xie a, S. Chehreh Chelgani b aKey ...
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The separation of chalcopyrite and pyite is not fully solved, and thus more efficient depressants are still needed in industry. This paper used potassium …
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When copper ores containing pyrite are crushed and ground, many unavoidable Fe3+ ions will be produced and enter the flotation process. At present, the adsorption mechanism of Fe3+ on chalcopyrite ...
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High flotation recoveries of both pyrite and chalcopyrite were achieved at an SBX concentration of 10 mg/L, and increasing the collector concentration increased the difficulty of flotation separation of pyrite from chalcopyrite. It is therefore necessary to add a selective depressant to the flotation pulp to separate the pyrite from chalcopyrite.
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1. Introduction. Pyrite (FeS 2) is normally a gangue mineral widely associated with valuable base metal sulfide minerals such as chalcopyrite (CuFeS 2), chalcocite (Cu 2 S), galena (PbS) and sphalerite (ZnS) which are the major mineral sources for copper, lead and zinc. The economic extraction of metals requires selective …
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DOI: 10.1016/j.mineng.2023.108292 Corpus ID: 260748274; Highly selective flotation separation of chalcopyrite and pyrite by a novel dithiocarbamate collector with morpholine group
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The article presents the synthesis and application of a novel collector, 5-methyl butylxanthate-1,2,4-triazole-3-thione (MBuXTT), for chalcopyrite flotation separation from pyrite. Various interfaces and surface characterization analysis methods were employed to study the flotation separation mechanism. The micro-flotation and …
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Efficient and clean flotation separation of copper-sulfur has attracted soaring interest in the beneficiation of sulfide ore. The objective of this work was to examine the influence of calcium hypochlorite (Ca(ClO) 2) oxidative modification on the flotation separation of chalcopyrite from pyrite in acid mine drainage (AMD) system.A …
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Results are presented on the flotation of chalcopyrite from a chalcopyrite-galena bulk concentrate high in pyrite using dextrin as a depressant for galena and pyrite at pH 8. The adsorption of both dextrin and xanthate ions at the pyrite/aqueous solution and the galena/aqueous solution interfaces have been studied through batch adsorption …
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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 …
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Keywords: Chalcopyrite, pyrite, high alkaline, flotation kinetics, microcalorimetry, flotation separation 1. Introduction In China, copper is mainly produced from chalcopyrite. Since it is generally in a symbiotic combination with pyrite, chalcopyrite needs to be separated from pyrite by flotation, which is usually referred to as
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However, pyrite flotation recovery was changed slightly when oxidation time longer than 3 d. Fig. 4 also showed an increased recovery difference from 35.5% to 69.7% between chalcopyrite and pyrite flotation as a function of time (≤3 d). These differences in flotation recovery were probably due to various hydrophilic species formed during ...
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To investigate the selectivity of HDBP, the micro-flotation tests of single mineral samples were carried out. The effects of HDBP concentration on the recoveries of chalcopyrite, galena and pyrite are compared in Fig. 2 a (pulp pH = 7; [terpineol] = 2.5 × 10 −6 mol/L). Across the entire concentration range of this study (from 0 to 2 × 10 −4 …
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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 copper mineral in nature. In particular, the effect caused by the presence of pyrite, a non-valuable mineral, but challenging for the …
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Froth floatation is extensively used for the effective separation of chalcopyrite and pyrite, and the flotation process is performed in a solution system, requiring a large amount of water (Li et al., 2017, Yang et al., 2022).Underground water is the most desirable water medium for flotation, but underground water resources are …
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Flotation separation of chalcopyrite/pyrite mixtures under Mg(OH)2 depression effectively limits pyrite entrainment into Cu concentrates. However, the Cu …
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Lime (CaO) is a common pyrite depressant used in the flotation separation of pyrite and chalcopyrite (Qiu et al. 2023). Due to the low price of lime, this depressant has been applied in most beneficiation plants in China (Bai et al. 2021). However, lime has some drawbacks in the flotation system. First, lime shows a poor ability to
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