Chalcopyrite Flotation Chalcopyrite
CFD investigation of chalcopyrite flotation prediction …
CFD (computational fluid dynamics) simulation plays an important role in flotation prediction research and application. The flotation process of chalcopyrite in a three …
Selective flotation separation of molybdenite from chalcopyrite …
Chalcopyrite and molybdenite are typical sulfide minerals known for their oxidation tendency, and extensive literatures suggest that the flotation behavior of sulfide minerals is closely related to the degree of surface oxidation [10], [14].As a result, a number of oxidation pretreatment technologies such as plasma pretreatment [15], hydrogen peroxide (H 2 O 2) [16] …
Minerals | Special Issue : Development of Flotation of …
Flotation is the most widely used method for concentrating chalcopyrite. Flotation of chalcopyrite includes complex phenomena that utilize different chemicals (collectors, …
The effect of oxidized starches on chalcopyrite flotation
The effect of starch concentration on chalcopyrite flotation at pH 7.5. In contrast to other starches, Ox 10/120 showed a somewhat linear dependence on polymer concentration as confirmed by a continual decline in chalcopyrite recovery. At higher concentrations (from 33.3 mg/L to 47 mg/L) Ox 10/120 appeared to be less depressive compared to the ...
Froth Flotation of Chalcopyrite/Pyrite Ore: A …
In a chalcopyrite and pyrite flotation system, the effect and mechanism of organic depressant sodium dimethyl dithiocarbamate on the hydrophobicity of chalcopyrite and pyrite were studied.
Water-bridged self-assembly of low-odor xanthate …
DFT calculations further reveal that TBOEX can form a stable and tightly arranged adsorption layer bridged by water molecules on the surface of chalcopyrite through two paths, and interact with d orbitals of copper atoms in the form of Cu-S tetrahedra through π* orbitals, finally improving the flotation recovery of chalcopyrite.
A non-inhibitor flotation process for selective enrichment of
The successful separation of chalcopyrite through flotation has been achieved by the introduction of di-minerophilic collectors, which is a noteworthy achievement [19], [20], [21]. The oxadiazole-thione compounds have been widely used in the fields of chemistry and pharmacy due to their unique coordination chelation properties.
The low-carbon flotation separation of chalcopyrite from …
These findings revealed that compared with SIBX, BN exhibited better flotation affinity to chalcopyrite and selectivity against pyrite and realized a high selective flotation separation of chalcopyrite from pyrite under pH ∼ 8.0, which was bound to reduce lime consumption during their industrial flotation separation in the mineral processing ...
Adsorption study of fenugreek gum onto pyrite surface: …
To investigate the effects of FG on the flotation behaviors of chalcopyrite and pyrite, micro-flotation experiments were conducted in this study using an XFG mechanical agitation flotation machine equipped with a 40 mL Plexiglas cell, operating at 1992 r/min. Prior to each test, 2 g of chalcopyrite/pyrite particles (artificially mixed minerals ...
The Mechanism of the Effect of Pre-Magnetized Butyl …
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 flotation test results …
The application of KMnO4 in reverse flotation separation of
However, this agent also depressed chalcopyrite flotation, especially under alkaline conditions with a pulp pH of 8–11, resulting in significant suppression of chalcopyrite flotation. For many years, researchers have been seeking efficient depressants for separating chalcopyrite and talc in a direct flotation system, but with limited success ...
The flotation separation of molybdenite from chalcopyrite …
Generally, froth flotation is the most widely used approach to separate valuable minerals from gangue minerals due to their different floatability [8], [9], [10], [11].It has been found that the chalcopyrite and molybdenite have quite similar natural floatability and are very difficult to separate [12], [13] from each other. In order to enlarge their floatability difference, some …
Selective flotation of chalcopyrite from pyrite using diphosphonic …
In chalcopyrite flotation practice, EX exhibits a good collecting capacity but a poor selectivity and it is easy to oxidize and decompose. Besides, prolonged EX exposure can also damage the human liver and nervous system. In contrast, HEDP is a more stable and environment-friendly reagent, which has already been proved in water treatment ...
Effect of polyaspartic acid as an environmental
The PASP had obvious selectivity for the arsenopyrite and chalcopyrite in the flotation system of copper and arsenic sulfide minerals. The most suitable flotation condition was determined as: PASP dosage of 10 mg/L and pH of 9.0. Under these conditions, the recovery of chalcopyrite reached 90.18 %, but the recovery of arsenopyrite decreased to ...
A fundamental study of chalcopyrite flotation in sea water …
Chalcopyrite flotation recovery was significantly decreased in sea water, primarily due to Mg 2+. Sodium silicate improved chalcopyrite flotation in sea water and MgCl 2 …
A Quantitative Relationship between Oxidation Index and Chalcopyrite …
Chalcopyrite, 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 properties [4,5].However, surface oxidation due to …
Minerals | Special Issue : Development of Flotation of Chalcopyrite …
The chalcopyrite deposit in Malanjkhand, India, is the largest copper ore producer in the country. However, its flotation performance has room for improvement. This study used standard flotation experiments using a mechanical flotation cell using a conventional collecting reagent and a collector blend consisting of xanthate and ester.
The selective adsorption mechanism of calcium ions/pullulan …
Flotation is widely adopted to separate sulfide minerals from talc (Zhong et al., 2021, Farrokhpay et al., 2018, Witney and Yan, 1997).However, in the flotation beneficiation of sulfide minerals, such as chalcopyrite, talc easily enters into copper concentrate due to its natural floatability, then affecting the copper grade in concentrate.
Effect of Grinding Media on Grinding-Flotation Behavior of Chalcopyrite …
Flotation results, as well-scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet spectrophotometer, and zeta potential measurement results indicate that nano-ceramic ball grinding is beneficial to the flotation of chalcopyrite. Flotation results also indicate that chalcopyrite has better floatability after nano ...
Effect of pyrite content on chalcopyrite flotation under …
This study aimed to investigate the effect of varying pyrite (Py) content on copper (Cu) in the presence of different regrinding conditions, which were altered using different types of grinding media: iron, ceramic balls, and their mixture, followed by flotation in the cleaner stage. The flotation performance of rough Cu concentrate can be improved by changing the …
Evaluation of the effect of the main parameters on …
be obtained as a result of flotation will be ensured. Key words: clay minerals; dynamic froth stability; flotation; response surface model; ζ-potential Cite this article as: Hasan Ali TANER, Vildan ONEN. Evaluation of the effect of the main parameters on chalcopyrite flotation in the presence of kaolinite and montmorillonite [J].
Flotation performance of chalcopyrite in the presence of …
The effect of pyrite on chalcopyrite flotation has been studied. A galvanic interaction model was first proposed by Ekmekçi and Demirel (1997) to describe the interaction between chalcopyrite and pyrite. When chalcopyrite and pyrite are both present in pulp and come into contact, a galvanic couple of chalcopyrite-pyrite (Cpy-Py) will form due to the rest potential …
The Flotation Separation of Chalcopyrite and Galena: Crystal, …
The review aimed to provide a deep understanding on the factors affecting Cu/Pb flotation separation as well as to develop new depressants helping to guide the flotation …
Enhancing flotation separation of chalcopyrite and …
Figure 3 showed the effect of PAAS dosage on the flotation behavior of chalcopyrite, serpentine and talc. The experiment was carried out at pH 7. It can be seen from Fig. 3 that the dispersant ...
Effects of Xanthate on Flotation Kinetics of Chalcopyrite and …
This 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 underlying causes behind the flotation rate changes …
A novel selective collector MIBATC and its performance on flotation …
The flotation results and adsorption amount tests showed that MIBATC exhibited superior collecting ability to chalcopyrite against sphalerite and pyrite under the conditions of pH 9.5–10 and collector dosage of 30–40 mg/L. Zeta potential results suggested that MIBATC attached on negative charged sites on chalcopyrite surface for a positive ...
Investigation the effect of filling materials on chalcopyrite flotation
Chalcopyrite and the filling materials used in the experiments were obtained from Yunnan Province and Anhui Province, China. After a series of crushing (jaw crusher), dry grinding (ceramic ball mill), and screening (standard sieve) steps, minerals with particle sizes of 0.038–0.074 mm were used for flotation experiments.
Enhancing flotation separation of chalcopyrite and …
Separation effects of sodium polyacrylate (PAAS) and gum Arabic (GA) on flotation of chalcopyrite and magnesium silicate minerals using potassium butyl xanthate …
Flotation behavior and surface adsorption mechanism of a …
Micro-flotation test results indicate that HDP has a significant inhibitory effect on talc, while the flotation recovery of chalcopyrite is almost unaffected. Effective separation of chalcopyrite and talc can be achieved with the addition of only 5 mg/L of HDP.
Effect of deep oxidation of chalcopyrite on surface …
The oxidation of chalcopyrite has been extensively studied. The collectorless flotation of chalcopyrite resulting from mild oxidation is the most thoroughly studied [9], [10].Light oxidation formed a metal-deficient layer on chalcopyrite surface including elemental sulfur and polysulfides, and improved hydrophobicity of chalcopyrite [11].Surface oxidation led to a …
Flotation separation of chalcopyrite from talc using a new …
In this work, carrageenan was investigated as a novel depressant for chalcopyrite flotation. Micro-flotation tests results demonstrated the carrageenan could depress the floatability of talc and had no effect on the chalcopyrite flotation. After adding 2400 g / t carrageenan, achieving recovery and grade of copper up to 91.86 % and 32.42 % from ...
A Study of Temperature Effect on the Xanthate's …
A 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 effect on the hydrophobicity of mineral surface by means of …
Insight into the effects of grinding media on the flotation …
Chalcopyrite is the main copper-bearing mineral on Earth and an important raw material for obtaining metallic copper. Froth flotation is considered an effective separation method for sulfide ores and has been applied at the industrial scale for many years [1], [2].Milling is a key procedure with a significant impact on the subsequent flotation process toward the …
Selective galena depression mechanism of tea polyphenol in chalcopyrite …
Flotation remains the main technique for separating chalcopyrite and galena (Xie et al., 2021).Nevertheless, these minerals have comparable natural floatability (Lai et al., 2020, Piao et al., 2014), and common collectors such as xanthates lack selectivity (Jiao et al., 2021)during the flotation process, presenting separation challenges.A feasible solution is the use of …
Selective Adsorption Mechanism of Ferric Ions on the …
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 chalcopyrite is high at pH 2–12 …
Three novel dithiocarbamate surfactants: Synthesis, DFT …
There is a wide diversity of flotation collectors for chalcopyrite. For example, ionic and soluble xanthates are the most widely used collectors thanks to their strong flotation ability [12], [13], [14].Unluckily, xanthates have the disadvantage of instability and poor selectivity in the production practice [15].They are prone to disintegrate into CS 2 (carbon disulfide) at lower pH …
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 contact angle experiments …