A Novel Chelating Collector with Di-minerophilic Group 5 …
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 …
Dextrin as a Regulator for the Selective Flotation of Chalcopyrite
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 …
Improved flotation of chalcopyrite from galena and pyrite …
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 …
Flotation performance of chalcopyrite in the presence of …
On the other hand, the floatability of pyrite tends to improve in the presence of other sulphides (Trahar, 1983).During the galvanic interaction between chalcopyrite and pyrite, the oxidation of chalcopyrite releases cupric (Cu 2+) ions.These Cu 2+ ions can be reduced to cuprous (Cu +) ions at reducing Eh with the oxidation of sulphur species of …
Flotation separation of chalcopyrite from pyrite and …
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 …
Selective Adsorption Mechanism of Ferric Ions on the …
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 ...
Heterocoagulation of chalcopyrite and pyrite minerals in flotation …
Total interaction energy versus separation distance between the chalcopyrite and pyrite particles with an average diameter of 25 Am. follows from that figure that the colloidal interaction forces predict the heterocoagulation process to occur at pHb6, when the energy barrier falls to ~5 k BT or less and the stability ratio for the (Brownian ...
Effect of Grinding Media on Grinding-Flotation Behavior …
ball grinding on the floatability of chalcopyrite and pyrite. Flotation results, as well-scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS),
Selective Adsorption Mechanism of Ferric Ions on the …
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 and pyrite surfaces is not clear. Here, the adsorption behaviors of Fe3+ on the surfaces of chalcopyrite and pyrite were …
The low-carbon flotation separation of chalcopyrite from pyrite …
With 1.0 × 10 −6 mol·L −1 PN, BN or HN, the effect of pH on the flotation recovery of chalcopyrite is shown in Fig. 2 (a), which indicates that the collecting power of the three triazine dithiol collectors to chalcopyrite was in the order of HN > BN > PN, being consistent with their carbon chain length. For BN and HN, the suitable pH values for …
Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
Highly selective flotation separation of chalcopyrite and …
WEBSingle 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) …
A potential ceramic ball grinding medium for optimizing flotation
The recovery of chalcopyrite and pyrite were 71.30% and 21.97%, respectively, and the CIB medium system, the recovery rates of chalcopyrite and pyrite increased from 34.87% to 50.31% and from 19.21% to 29.79%, respectively, as the pulp pH increased from 3 to 11, whereas the selectivity index increased and then decreased.
Adsorption and depression mechanism of carrageenan on chalcopyrite …
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 …
Effect of regrinding and pulp aeration on the flotation of chalcopyrite
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 ...
Effect of Grinding Media on Grinding-Flotation Behavior of Chalcopyrite
The chalcopyrite and pyrite flotation concentration at pH of 8 and addition of 1·10 −4 mo·L −1 of isobutyl xanthate concentration were also analyzed using XPS. The survey spectra of chalcopyrite and pyrite were used to determine the surface element content of the samples under different grinding media. The high-resolution spectra of Fe ...
Flotation separation of chalcopyrite from pyrite and …
Semantic Scholar extracted view of "Flotation separation of chalcopyrite from pyrite and sphalerite using a novel collector: An experimental and mechanism investigation" by Xuesong Sun et al. ... Flotation separation of chalcopyrite from pyrite and sphalerite using a novel collector: An experimental and mechanism investigation …
Oxidative Flotation Separation of Chalcopyrite and Pyrite …
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 ...
Structure-activity of chelating depressants for …
Microflotation tests of single minerals, namely, chalcopyrite and pyrite were carried out using an XFG-5 flotation machine with a 40 mL suspension cell operating at 1460 rpm to evaluate the performance of depressants. For each test, 2 g chalcopyrite or pyrite was mixed with 30 mL deionized water. After
Effect of Grinding Media on Grinding-Flotation Behavior of Chalcopyrite
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.
Selective Adsorption Mechanism of Ferric Ions on the …
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 …
Effects of galvanic interaction on collectorless flotation …
DOI: 10.1016/S0301-7516(97)00050-1 Corpus ID: 98755372; Effects of galvanic interaction on collectorless flotation behaviour of chalcopyrite and pyrite @article{Ekmeki1997EffectsOG, title={Effects of galvanic interaction on collectorless flotation behaviour of chalcopyrite and pyrite}, author={Zafir Ekmekçi and H. …
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}, …
Flotation separation of chalcopyrite from pyrite and …
1. Introduction. With the development of the times, copper is in great demand as important metals [1], [2].Chalcopyrite is the common natural sulfide ore which can be always considered the main sources of copper [3], [4].However, in complex non-ferrous …
Xanthate interaction and flotation separation of H2O2 …
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% ...
Flotation kinetics and thermodynamic behavior of …
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
Selective Adsorption Mechanism of Ferric Ions on the …
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 and pyrite surfaces is not clear. Here, …
The galvanic interaction between chalcopyrite and pyrite …
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 …
Heterocoagulation of chalcopyrite and pyrite minerals in flotation …
The ELS results indicated that pyrite has a positive zeta potential (zeta) up to its isoelectric point (IEP) at approximately pH 2.2, while chalcopyrite has a positive zeta up to its IEP at approximately pH 5.5. This produces heterocoagulation of chalcopyrite with pyrite between pH 2.2 and pH 5.5.
Improving Flotation Separation of Mg(OH)2-Depressed …
Flotation separation of chalcopyrite/pyrite mixtures under Mg(OH)2 depression effectively limits pyrite entrainment into Cu concentrates. However, the Cu concentrate is still negatively affected by the low selectivity of depression by Mg(OH)2 …
Highly selective flotation separation of chalcopyrite and pyrite …
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