The S content on the surface of smithsonite plays a decisive role in smithsonite flotation. In this study, the attenuation behavior of smithsonite surface sulfide layer was investigated by inductive coupling plasma mass-spectrometric (ICP-MS) and X-ray photoelectron spectroscopic (XPS). The results of smithsonite surface S adsorption …

In this article, the separation performance and mechanism of pyrophyllite nanoparticles (PNPs) on smithsonite and quartz flotation system were investigated using the method …

In this work, the effect of Fe 2+ on the flotation behavior of smithsonite was investigated, and the interaction mechanism of Fe 2+ with the smithsonite surface in …

3. Beneficiation of lithium ores. The major techniques used in the beneficiation of lithium minerals are shown in a generalised flowsheet in Fig. 4, and include gravity separation (DMS), magnetic separation, and froth flotation. Sorting is also being recognised as a potential method in recent years.

Smithsonite is a readily dissolvable carbonate mineral that is naturally hydrophilic, making recovery of this ore by flotation difficult. The flotation results showed that conditioning with only sodium sulfide (Na 2 S) did not successfully allow the smithsonite samples to float, whereas treatment with a combination of S(II), Pb(II) and xanthate (with …

Ammonium ions have been used to enhance sulfidation and flotation of smithsonite. The surface solubility of enhanced sulfurized smithsonite significantly …

In recent years, extraction of zinc from low-grade mining tailings of oxidized zinc has been a matter of discussion. This is a material which can be processed by flotation and acid-leaching methods. Owing to the similarities in the physicochemical and surface chemistry of the constituent minerals, separation of zinc oxide minerals from their …

A new and effective activation method for the sulfidization flotation of smithsonite is therefore required; however, the development of such a method has proved challenging. In this study, the effect of lead ions on the sulfidization flotation of smithsonite was determined by flotation experiments using sodium butyl xanthate (NaBX) as a …

Monolayers (OH, HS and S) were also added in a DFTB study of the sulfidization-amine flotation mechanism of smithsonite in order to model the hydration effect of water and the sulfidization effect ...

The flotation test results showed that the sulfidation level of smithsonite by directly adding Na2S was not good enough to get a high recovery. The XPS …

In this study, we systematically investigated the effect of Pb 2+ on the surface hydrophobicity and flotation behavior of sulfidized smithsonite in xanthate flotation. The smithsonite floatability was enhanced when Pb 2+ was present in the pulp after sulfidization, and the flotation recovery increased from 50.05% to 82.88%.

Micro-flotation studies. Fig. 2 shows the flotation recovery of smithsonite as a function of the NaIX concentration in the absence or presence of different …

The surface modification of smithsonite with Pb ions is an effective method to improve the sulfidization-xanthate flotation process. In the present study, NH3·H2O was employed to enhance Pb ion adsorption on the smithsonite surface, thus improving its flotation performance. The time-of-flight …

The pulp rheology is an important factor affecting flotation performance. Gangue minerals have a significant impact on the rheological property of smithsonite (ZnCO3). The complex pulp rheology (high viscosity, poor dispersion) will adversely affect the grade and recovery of concentrate. To address this problem, the effect of gangue …

Sodium sulfosalicylate could facilitate the flotation of smithsonite, and increase the flotation recovery by ∼28%. Inductively coupled plasma analysis indicated that the surface dissolution of the enhanced sulfurized smithsonite decreased significantly. ... In this study, fenugreek gum (FGM) was used as a new depressant to separate ...

Some of the smithsonite samples were crushed by hand, ground using an agate mortar, and sieved using Tyler screens. A sample of 38–90 µm fraction was used in the micro-flotation tests and adsorption measurements. X-ray powder diffraction and chemical analyses indicated that. Micro-flotation studies

Sulfidization is required in the amine flotation of smithsonite; however, the sulfidization mechanism of smithsonite is still not fully understood. In this work, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and UV–vis diffuse reflectance spectroscopy (UV–vis DRS) were used to characterize sulfidized and unsulfidized …

Zinc is mostly extracted from oxidized zinc and zinc sulfide minerals, and this process involves flotation as a key step. While it is easier to float the sulfide mineral, its consumption and depletion has led to an increased reliance on oxidized zinc minerals, including smithsonite. Hence, the development of efficient ways of collecting …

Pure smithsonite samples used in all experiments were derived from Yunnan Province in China. Subsequently, the samples were crushed and dry ground using an agate torsion mortar. For micro-flotation tests and TOC content study, the ground product of smithsonite was sieved to achieve a particle fraction of ‒74+38μm using a standard …

A mixture of amines and xanthates can also be used as a mixed collector for smithsonite flotation [33]. A new line of collectors [36] ... Physicochemical studies of smithsonite flotation using mixed anionic/cationic collector. Miner Eng, 20 (2007), pp. 621-624. View PDF View article View in Scopus Google Scholar

The Zoro pegmatite project in east-central Manitoba occurs 20 km east of the historic mining town of Snow Lake. A composite sample (Master Comp) was prepared from three pegmatite zones within Zoro Dyke "D1" including the North, Central, and South Zones for mineralogical analysis and heavy liquid separation (HLS). The mineralogical …

The most recent studies on using PESA in mineral processing have shown that PESA is an effective depressant for calcite flotation (Chen et al., 2019, Dong et al., 2020). However, none of these researches have used PESA in zinc ore flotation. ... which could depress the smithsonite flotation, allowing preferential flotation separation of ...

The micro-flotation tests showed that the flotation recovery of smithsonite was greatly affected by the chlorite, which was attributed to the slime-coating of the fine …

Feng et al. studied the sulfidation of smithsonite by flotation experiments, adsorption amount tests, zeta potential tests, and XPS analysis, they found the sodium …

Micro-flotation studies. Fig. 2 shows the flotation recovery of smithsonite as a function of the NaIX concentration in the absence or presence of different concentrations of NH 4 Cl with 1.5 × 10 −3 mol/L Na 2 S as the sulfurizing agent, 1.5 × 10 −3 mol/L CuSO 4 ·5H 2 O as the activator, and a pH of 10.

This study concentrated on the adsorption features and mechanism of a novel amidoxime surfactant 3-dodecylamine propyl amidoxime (DPA) used as a new wolframite collector on wolframite and calcite surfaces. The flotation experiment showed that DPA collector has a remarkable flotation separation effect on wolframite and calcite.

In this study, firstly, the effects of ammonia concentration, leaching time and solid/liquid ratio on the leaching behaviour of zinc from a smithsonite (ZnCO3) ore sample in aqueous ammonia ...

Feng et al. studied the sulfidation of smithsonite by flotation experiments, adsorption amount tests, zeta potential tests, and XPS analysis, they found the sodium sulfide (Na 2 S) concentration ...

Carrier flotation is a common technique used to improve flotation recovery of ultrafine ores. In this study, we used coarse polystyrene as the carrier material to enhance flotation recovery of fine smithsonite (ZnCO3) particles. Sodium oleate was used as the collector and played a role in the adhesion of fine smithsonite to polystyrene due …