In the flotation process, a strong and selective collector is an important factor for separating chalcopyrite from sphalerite and pyrite (Newell et al., 2007, Xu et al., 2022). Xanthates are the most common flotation collectors for separating chalcopyrite in the flotation (He et al., 2022).
Since the most common Pb-Zn selective flotation method (Sheridan–Griswold method) sequentially recovers lead and zinc at alkali conditions, the monomineralic flotation tests for galena, sphalerite, …
Influence of Flotation Reagents on Galena and Sphalerite Zeta Potential ... It was found that copper ions activate the pyrite flotation due to the formation of copper xanthate and dixanthogen.
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 …
Using FeCl3 as the depressor against pyrite and CuSO4 as the activator for sphalerite, APTT realized a selective and efficient flotation recovery of sphalerite from …
In this paper, the effect of pyrite on the activation of sphalerite was investigated by micro-flotation, copper adsorption experiments, X-ray photoelectron spectroscopy (XPS), and electrochemical measurement. The micro-flotation test results showed that the recovery and flotation rate of sphalerite with copper sulphate as activator and butyl xanthate as …
The flotation tests and XPS analyses on galena, sphalerite and pyrite have been carried out in a collecting-depressing-reactivating system (hereafter referred as the CDR system). In this system, sulfide minerals were first collected and activated by the collector, and then depressed strongly by Ca(OH)2 in the strong alkaline solution, and …
The ToF-SIMS total ion yield image shows all the particles present in the sample while the other images are only representative of a particular element, Zn and S (sphalerite), Fe and S (pyrite ...
Pyrite is a gangue mineral in the flotation of sphalerite activated by copper sulphate (CS). In this study, the attachment of air bubbles onto sphalerite and pyrite surfaces activated by CS was comparatively studied using a novel approach with High-Speed Video Microscopy (HSVM) and X-ray photoelectron spectroscopic (XPS).
Flotation has been extensively used to separate galena and sphalerite. Herein, a reagent scheme comprising aerofloat collectors and Zn 2+ and SO 32− …
This ensures pyrite is sufficiently depressed while sphalerite floats. Good water quality with low concentrations of contaminant ions, such as Pb(2+)and Fe(2+), is also needed to limit inadvertent activation and flotation of pyrite into zinc concentrates.
Pyrite is often distributed in rock in the form of blocks or filled along the cracks of rock in the form of veins. Particle size distribution of pyrite is generally within the range of 0.3–0.5 mm, mainly associated with chalcopyrite, galena, and sphalerite (Liu and Zhou 2016).Strawberry-shaped pyrite in manganese is composed of multiple pyrite …
The effect of collector addition on the separation of sphalerite from pyrite by flotation is shown in Fig. 1. For a fixed copper sulphate concentration, increasing collector addition has a greater effect on increasing pyrite recovery than increasing sphalerite recovery. Indeed, at a copper sulphate concentration of 1000 or 1500 g/t (gram of ...
In this study, the effects of seawater on the flotation separation of sphalerite from pyrite were investigated. The results show that under strong alkaline conditions, …
DOI: 10.1016/S0301-7516(00)00067-3 Corpus ID: 98263161; Flotation of sphalerite and pyrite in the presence of sodium sulfite @article{Shen2001FlotationOS, title={Flotation of sphalerite and pyrite in the presence of sodium sulfite}, author={W. Z. Shen and Daniel Fornasiero and John Ralston}, journal={International Journal of Mineral Processing}, …
In Gushfil flotation plant, galena is firstly floated in the lead circuit while sphalerite and pyrite are depressed by NaCN and ZnSO 4. In the zinc flotation circuit, sphalerite is activated using ...
All the roughing flotation experiments were performed in the XFG type mechanical agitation flotation machine with a 1.5 l flotation cell. Fig. 1 a and b show the process flowsheet adopted for the sphalerite-pyrite bulk and sphalerite/pyrite separation flotation roughing experiments, respectively. For each flotation test, 500 g of the raw …
Monyake et al. [108] studied the depression ability of chitosan-grafted-polyacrylamide (Chi-g-PAM) in separating a complex sulfide ore from Mississippi Valley comprising chalcopyrite, galena, sphalerite, and pyrite (Fig. 13). Flotation outcomes revealed that Chi-g-PAM was preferentially adsorbed onto pyrite particles among all …
Mineral samples of sphalerite and pyrite used in this study were purchased from Hunan Province, China. The massive samples were sequentially crushed, hand-picked, and ground in the ceramic ball mill, then the ground samples were sieved through standard sieves of 74 μm and 37 μm to obtain a maximum amount of the −74＋38 μm …
The separation of chalcopyrite and pyite is not fully solved, and thus more efficient depressants are still needed in industry. This paper used potassium permanganate (KMnO 4) as a pyrite depressant to separate pyrite from chalcopyrite.Flotation and contact angle results indicated that pyrite could be depressed by KMnO 4 at pH 7, while …
Semantic Scholar extracted view of "The flotation separation of sphalerite from pyrite through a novel flotation reagent system of FeCl3-CuSO4-aminotriazolethione" by Zhiyong Zhang et al.
Approximately 90% of the achieved pyrite flotation recovery is associated with true flotation, and the highest entrainment is measured for the OD1-Leached ore domain, circa 11% (Figure 5). ... part I, Proton microprobe analyses of pyrite, chalcopyrite, and sphalerite, and part II, selenium levels in pyrite; comparison with delta 34 S values …
Reducing Hg emissions from Zn smelting flue gas (Zn-SFG) is rigorously stipulated by the Minamata Convention. Currently, a little natural pyrite (FeS 2) as the tailings after flotation of natural sphalerite (ZnS) is often regarded as solid wastes and discarded; therefore, another utilization of these natural FeS 2 is preferable. In this …
DOI: 10.1016/j.cis.2008.09.001 Corpus ID: 34243325; A review of the fundamental studies of the copper activation mechanisms for selective flotation of the sulfide minerals, sphalerite and pyrite.
DOI: 10.1016/j.apsusc.2024.160059 Corpus ID: 268989793; Flotation separation of chalcopyrite from pyrite and sphalerite using a novel collector: An experimental and mechanism investigation
Accordingly, pyrite flotation can only be achieved at ranges of pH below 5 and potential below the continuous upper line without the formation of thiosulfate ... Pyrite and sphalerite in ultrapure water (0.001 mol/L KNO 3). Particle size 20 µm. pH = 8.5 fixed with HNO 3 /KOH. Smith & Partridge microflotation cell.
In flotation process, the hydrophilic substances and collectors compete for adsorption on the surface of minerals, thereby reducing the floatability of minerals. In this study, the effects of seawater on the flotation separation of …
Gold grains are observed in a variety of forms, such as coarse-liberated native gold grains, and ultra-fine grains associated with sulfide or non-sulfide mineral particles, in the form of solid solution in sulfide minerals, mainly pyrite. In the flotation of gold ores, bulk sulfide mineral flotation is generally applied to maximize gold recovery. …
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 metals, sphalerite and pyrite always are as intergrowths with chalcopyrite, and the fine …
Microflotation Tests. Sphalerite and galena were tested for floatability with and without ZnSO 4 using single mineral flotation tests. Figure 2 displayed the outcomes of sphalerite and galena flotation recoveries as a function of pH. As shown in Fig. 2, under acidic conditions, the recovery rate of sphalerite could reach about 55% when the …
In the current study, the effect of pulp pH and the collector type parameters on the galena and sphalerite flotation from a complex lead–zinc–iron ore was …
Abstract The role of dextrin in the xanthate flotation of pyrite and sphalerite was examined by means of flotation tests and microelectrophoretic measurements. Floatability and ζ-potential of both minerals were found to be depressed in a suitable pH range due to the formation of their respective superficial metal hydroxide layers. The …
As for the flotation tests, it could be seen from the plots that the largest yields and fastest flotation kinetics were observed for galena, followed by sphalerite and pyrite. This could be attributed to galena being more electrochemically active than pyrite and adsorbing more collector [ 64 ].
