Flotation and surface modification characteristics of galena
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 …Web
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Selective Flotation
Microbially Induced Mineral Beneficiation. K.A. Natarajan, in Biotechnology of Metals, 2018 Sphalerite–Galena Separation. Differential surface chemical behavior of A. ferrooxidans towards galena and sphalerite can be made use of in the separation of galena from sphalerite through selective flotation after bacterial conditioning. Flotation recovery of …Web
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The utilization of 2-phosphonobutane-1,2,4
The motive of this work was to explore PBTCA as a novel sphalerite depressant in the selective flotation separation of galena from sphalerite. The flotation behaviors were examined by flotation tests and depression mechanism was unveiled by zeta potential measurement, Fourier Transform Infrared spectroscopy (FTIR) and X-ray …Web
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Recovery of sphalerite from a high zinc grade tailing
Flotation is the most important method for recovering sphalerite, and it has attracted significant research attention worldwide. In this study to clarify the hotspots for phased research frontiers and research progress of sphalerite flotation technology in the last 20 years, 720 pieces of relevant academic literature were selected by using …Web
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A New Innovative Method of Flotation Separation for High
However, their flotation behaviors enhanced slightly at much particles finer than −0.074 mm. Thus, the optimum grinding condition was determined as 85% particles finer than −0.074 mm. Figure 2b–d shows the flotation performance of galena, sphalerite, and pyrite under the different collector systems. It is clear from the results that ...Web
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Synthesis of a novel collector based on selective
High-purity pyrite, sphalerite and galena samples were obtained from Hubei and Hunan Provinces, China. These were used for micro-flotation tests and other measurements. Two ores were used for other flotation tests. The artificial mixed mineral ore was prepared by mixing high-purity pyrite, sphalerite, and galena samples in a ratio of …Web
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ORE MINERALOGY AND MINERAL CHEMISTRY OF PYRITE, GALENA, AND SPHALERITE
Paragenesis in the alteration zones are pyrite, chalcopyrite, sphalerite, galena, pyrrohotite, quartz, calcite and barite. FT-IR and XRD studies showed the presence of clay, sulphate, sulphur ...Web
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An environmental-friendly sphalerite depressant (2
In this work, HPAA (2-Hydroxyphosphonoacetic Acid) was explored as a novel sphalerite depressant for the selective flotation of sphalerite and galena. The depression performances and mechanisms were investigated through micro-flotation tests and various characterization techniques. Micro-flotation tests showed that HPAA selectively inhibited ...Web
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Selective Adsorption Mechanism of Zinc Ions on the Surfaces of …
In this study, selective adsorption mechanism of zinc ions on the surfaces of galena and sphalerite in the flotation separation of Pb-Zn was comprehensively …Web
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Effect of NaCN:ZnSO4 Mixture Molar Ratio and Particle-Size
This work studies the depression of sphalerite and pyrite with a NaCN:ZnSO4 mixture in the selective separation of Pb-Zn by flotation when the blend is enriched with Ag. Given in this paper are an explanation of depression mechanism and the method for optimizing the Pb-Ag recovery. This was done by analyzing the …Web
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Floc flotation of galena and sphalerite fines
At the given reagent and operating conditions, floc flotation increases the floatability of the galena and sphalerite fines over 30% ~ad 50% in the range of pH 5 to 8, respectively, in comparison to the corresponding conventional flotation. Clearly, floc flotation is an effective means of recovering galena and sphalerite fines.Web
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Temperature and climate-induced fluctuations in froth flotation: an
In the case of galena flotation, ... In sphalerite flotation [Citation 89], it has been demonstrated that an increase in pH and temperature creates favourable conditions for the stability of the zinc hydroxide complex on the mineral surface. In the Somincor plant (Portugal), significant (25%) seasonal fluctuations in zinc recovery were ...Web
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Selective flotation separation of galena from sphalerite via …
1. Introduction. Galena (PbS) and sphalerite (ZnS) are the main sources of lead and zinc and usually associated in sulfide deposits. Because of the similar surface properties of these two minerals, their flotation separation is a persistent topic of interest in mineral processing [1].Xanthate is the most commonly used collector for sulfide mineral …Web
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Different Aryl Thiourea Compounds as Flotation Collectors in a …
The primary coexisting mineral with galena is sphalerite. Hence, it is critical to selectively separate galena from sphalerite by flotation. In this work, thiourea and related derivatives as potential flotation collectors for separating galena from sphalerite were investigated. Thiourea and its related derivatives were found to be effective …Web
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A Process Mineralogy Approach to the Flotation of Complex
Sulfide minerals are naturally more hydrophobic than most of the mineral groups and respond well to flotation. Even though, most sulfide ores contain minerals (e.g., chalcopyrite, pyrite, galena, and sphalerite) presenting similar surface physicochemical properties, flotation is practically the most effective method in their beneficiation [13, 14].Web
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A reagent scheme for galena/sphalerite flotation separation: …
Flotation is the most effective method to separate galena and sphalerite ( Bandini et al., 2001). It uses the difference in the surface hydrophobicity of minerals to …Web
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The effect of water molecules on the thiol collector interaction on …
In froth flotation the molecular interaction between reagents and mineral surfaces take place at the solid liquid interface. In this paper, the effect of water molecule on the three typical thiol collectors (xanthate, dithiocarbomate and dithiophosphate) interactions at the galena (PbS) and sphalerite (ZnS) surfaces has been studied adopting density …Web
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Polysaccharides-based pyrite depressants for green flotation …
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 …Web
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Floc flotation of galena and sphalerite fines
The flotation of galena and sphalerite fines in the form of flocs, which is termed floc flotation, has been studied in the present work. The flocs formed through …Web
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Galena (ga), sphalerite (sf), pyrite (py).
This paper reports the results of flotation tests conducted with a copper-lead-zinc sulphide ore. The major sulphide minerals in the ore are chalcopyrite, galena, sphalerite, marmatite and pyrite ...Web
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Selective depressive effect of pectin on sphalerite flotation and its
Moreover, mixed-mineral flotation recovery of galena and sphalerite were 91% and 3%, respectively, at the condition of 10 mg/L pectin and pH 8, further confirmed that pectin could be used to achieve efficient separation between galena and sphalerite. (2) Electrokinetic and adsorption experiments results. CRediT authorship contribution …Web
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Flotation separation of galena from sphalerite using hyaluronic …
The effect of HA on the flotation of galena and sphalerite were evaluated by micro-flotation tests. The depression mechanisms were investigated by adsorption capacity, Zeta potential and X-ray photoelectron spectroscopy (XPS) analysis. The results of micro-flotation tests proved that HA was an efficient and selective sphalerite depressant ...Web
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Application and depression mechanism of sodium sulfite on galena …
In the past investigations, the separation of galena and sphalerite in flotation was generally performed via the preferential flotation of galena as well as the suppression of sphalerite, since galena exhibited superior natural floatability than sphalerite [10]. The depressants employed for sphalerite are mainly some inorganic salts, including ...Web
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Synthesis of a novel dithiocarbamate collector and its selective
From the results of single mineral flotation tests, MDPE was a potentially selective collector to separate galena and sphalerite under slightly alkaline conditions (pH=8.5). Considering the complex composition of mineral slurry, the artificially mixed minerals of galena and sphalerite flotation experiments were further performed.Web
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(PDF) A reagent scheme for galena/sphalerite flotation separation
Flotation has been extensively used to separate galena and sphalerite. Herein, a reagent scheme comprising aerofloat collectors and Zn 2+ and SO 3 2− …Web
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Investigations on the depressant effect of sodium alginate on galena
Introduction. Galena is a common and typical lead-containing mineral on the earth (Chen et al., 2011, Huang et al., 2019b, Wang et al., 2019). It is usually associated with other sulfide minerals in the ore deposits, such as chalcopyrite (CuFeS 2), sphalerite (ZnS) and marmatite ((Fe,Zn)S) (Hayes and Ralston, 1988).Flotation is the commonly used …Web
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Combined microflotation effects in polymetallic ores beneficiation
Conventional flotation extracts lead and copper minerals of 30–74 μ in size into the rough concentrate (Fig. 10A), chamber product of scavenger flotation contains minerals of zinc and iron (Fig. 10B). With a chamber product of scavenger flotation is lost galena, which is in the form of phenocrysts in sphalerite (Fig. 10C).Web
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Improved flotation separation of sulfide minerals by synthesized
The flotation process was first employed to separate sulfide mineral resources 100 years ago. A typical example is floating successively galena (PbS) / sphalerite (ZnS) using ethyl xanthate (EX) as collector and copper sulfate as activator while depressing pyrite (FeS 2) using lime as depressant [6], [7]. Large quantities of lime can …Web
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The effect of water molecules on the thiol collector interaction on the
In froth flotation the molecular interaction between reagents and mineral surfaces take place at the solid liquid interface. In this paper, the effect of water molecule on the three typical thiol collectors (xanthate, dithiocarbomate and dithiophosphate) interactions at the galena (PbS) and sphalerite (ZnS) surfaces has been studied adopting density …Web
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(PDF) Selective Separation of Chalcopyrite from Galena
and SCT used as combined depressants in the selective flotation of galena from sphalerite. J. Mol. Liq. 2017, 231, 485–490. 27.Web
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