Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review

Therefore, the aim of this review is to outline the scientific achievements in the field of froth flotation of chalcopyrite and its separation from other minerals, as well …

Quantitative evaluation of collector flotation performance …

The galena-pyrite flotation separation was chosen as the practical separation system of interest. By combining ML and QSAR, we have identified a correlation between FI and CPI, producing a portable and easily accessible model to accurately evaluate and predict collector flotation performance based on theory and computation. …

Pyrite activation in amyl xanthate flotation with nitrogen

Flotation results indicate that 50 ppm (6.8 × 10⁻⁵ mol/L) free cyanide sufficiently depressed pyrite flotation, while 9.5 × 10⁻⁴ mol/L lead ions substantially activated pyrite flotation.

Effect of pyrite textures and composition on flotation …

Pyrite flotation recovery as a function of solution potential at different pH's (Tao et al., 2018). ... (2014), while evaluating the flotation behaviour of lead sulphide samples containing framboidal pyrite, found that the presence of framboidal pyrite in the feed negatively impacted lead recoveries. These studies suggest that in mixed sulphide ...

Evaluate the Depression of High-Concentration Pyrite in …

As pyrite feed grade increased from 5% to 25%, the anodic role of 30 wt% Cr steel did not change, but the anodic role of chalcopyrite and the cathodic role of pyrite were enhanced, promoting chalcopyrite oxidation while retarding pyrite oxidation, both of which facilitated copper activation on pyrite and subsequent pyrite flotation.

Assessing the depression of high-concentration pyrite in …

Pulp chemistry measurements and electrochemistry studies on tri-phase galvanic systems indicated that the strong pyrite flotation at pH 10.5 in the case of 25% …

Maximise pyrite depression in copper ore flotation using …

The depression of pyrite in copper ore flotation is a challenge in high salinity water although natural pyrite can be depressed readily at alkaline pH due to the formation of iron hydroxides on pyrite surfaces (Boulton et al., 2001, Mu et al., 2016 ). In copper ore flotation, a galvanic interaction occurs between copper minerals and pyrite with ...

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}, …

Correlation of surface oxidation with xanthate adsorption and pyrite

The investigation of the sulfur oxidation behavior is key to understand pyrite oxidation [30].In this study, we utilized the amounts of sulfur species formed, an indicator of mineral surface oxidation, to evaluate pyrite surface oxidation [14, 24].As illustrated in Table 1, at the same pH, the amounts of sulfur oxyanions formation with H 2 O 2 addition …

Biodegradable acids for pyrite depression and green flotation

The flotation and adsorption mechanism on chalcopyrite and pyrite were systematically studied using a series of flotation tests, zeta potential measurements, adsorption analysis, infrared spectral ...

Evaluation of flotation collectors for copper sulfides and pyrite…

Evaluation in Flotation Collectors for Copper Sulfides and Pyrite Using Rate and Recovery Criteria; P.K. Ackerman et al. Effect of alkyl substituents on performance of thionocarbamates as copper sulfide and pyrite collectors; P.K. Ackerman et al. The importance of reagent purity in the evaluation of flotation collectors

Novel application of depressant sodium mercaptoacetate in flotation …

Commonly, it is difficult to separate chalcopyrite and pyrite by flotation because of the complex embedding relationship and similar natural floatability of chalcopyrite and pyrite minerals in the ore [7], [8], [9]. ... Evaluating the adsorption mechanism of a novel thiocarbamate on chalcopyrite and pyrite particles.

(PDF) Pyrite Flotation: A Review

This review aims to gather these data with an attempt to evaluate pyrite flotation as a whole picture. In this respect, roles of …

Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review

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 operation due …

(PDF) Pyrite depression by dextrin in flotation with …

Hence, to prevent pyrite flotation with dextrin in the presence of xanthates a condition needed is to have a high amount of ferric hydroxide on the pyrite surface to enhance dextrin adsorption. Figure 14 shows the floatability of pyrite oxidized for 30 min and 24 hs as a function of dextrin concentration using 1x10-3 mol/dm3 of ethyl and propyl ...

A green flotation collector towards efficient separation of

The flotation experiments show that PBAHX has a superior recovery ratio for chalcopyrite (91.89%), but a poor flotation performance on pyrite (34.62%) at a collector concentration of 2 × 10 −4 mol/L and pH 9.0. Further, E-nose detection demonstrates that PBAHX has a lower odor intensity than SIBX, which is attributed to the chaotic ...

Flotation separation of pyrite and chalcopyrite with …

Effect of pH on the flotation behavior. Previous studies have demonstrated that the slurry pH is a vital factor for pyrite and chalcopyrite flotation (Zhang et al. 2023b).Here, the influence of pH on the depressing capacities of KMnO 4 (3 min of treatment) for pyrite and chalcopyrite were determined by flotation tests in the pH …

Flotation of Pyrite

Flotation of Pyrite. Table of Contents. This paper is a record of the first of a series of tests on sulfide minerals to be made by the metallurgical department of the University of California. The purpose of the tests here recorded is to determine the action of standard oils, oil mixtures, and addition agents on the flotation of pyrites.

Post-regrind selective depression of pyrite in pyritic …

The results of single mineral flotation tests showed that konjac glucomannan had a stronger depression effect on pyrite than traditional organic depressants (Starch, Dextrin, Guar gum) with the ...

The depression of copper-activated pyrite in flotation by …

Electrochemical studies conducted on non-activated pyrite flotation showed that the biopolymers, after adsorption on pyrite, passivate surface and suppress electrochemical reactions occurring on ...

Pyrite Flotation Separation and Encapsulation: A …

Encapsulation Tests Pyrite Concentrate. To evaluate the behavior of a sample and simulate the encapsulation of the pyrite concentrate obtained by flotation …

3D Characterization of Auriferous Pyrite Flotation Samples …

The liberation and exposure of valuable mineral grains in ore particles are of significant importance in understanding the efficiency of flotation separations. A flotation feed sample from the Kensington concentrator was scanned by micro X-ray computed tomography (micro-XCT), to determine the liberation and exposure of auriferous pyrite …

Advances in depressants used for pyrite flotation separation …

Here, based on the commonly used pyrite depressants, recent studies on the surface properties of sulfide minerals, flotation characteristics of reagents, and …

Evaluation of flotation collectors for copper sulfides and pyrite…

In general, it will be noted that the flotation rate follows the same pattern as does the flo- tation recovery, that flotation is better at pH 5.0 than at 10.5 and that the order of mineral flotation with these five collectors is typically chalcopyrite > chalcocite > covellite > bornite >> pyrite.

Selective depression of pyrite with chitosan in Pb–Fe sulfide flotation

Pyrite is a common sulfide mineral associated with galena, chalcopyrite, and sphalerite. In the selective flotation of Pb-Zn sulfide ores, pyrite is usually depressed at alkaline pH [1] [2] [3 ...

Mechanisms of pyrite biodepression with

It has been shown that bacterium Acidithiobacillus ferrooxidans can be used to depress pyrite in seawater flotation at natural pH, which opens the possibility for its use as an alternative to lime to depress pyrite in copper sulfide flotation. In order to have a better understanding of the mechanisms involved in pyrite depression with A. …

The depression of pyrite in selective flotation by different …

The depression of pyrite flotation by polysaccharides is due to the selective adsorption of polysaccharides polymers on pyrite surface. Bulut et al. (2011) investigated the depression effect of starch on pyrite flotation and found that starch was effective at a low dosage (1.7 mg L −1) and more pronounced at alkaline pH (10) than natural pH ...