Ultrasonic pretreatment for enhancing flotation separation …
@article{Chen2024UltrasonicPF, title={Ultrasonic pretreatment for enhancing flotation separation of elemental sulfur and silver-bearing lead minerals from an oxidative pressure leaching residue of zinc sulfide}, author={Canneng Chen and Song Zhang and Quanjun Liu and Luzheng Chen and Yongjun Xian and Yijie Wang}, journal={Minerals …
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Thermochemical modification for the surface of smithsonite with sulfur
Micro-flotation tests results showed that the addition of the sulfur at a small S/ZnCO 3 mole ratio (0.05) during the thermochemical modification process facilitated flotation of the smithsonite and improved the flotation recovery by approximately 65%. The results of XRD analyses and thermodynamic calculations verified that the smithsonite …
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Handbook of Flotation Reagents Chemistry, Theory and …
Emphasis is placed on froth flotation as the major technique for the beneficiation of Cu-Co minerals. Download Free PDF View PDF. ... be floated in the absence of a collector under conditions in which mild oxidation of the contained sulfide to elemental sulfur or polysulfide occurs. Each of these categories is discussed separately in this chapter.
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Processes | Free Full-Text | Interfacial Adsorption …
Diethyldithiocarbamate (DDTC) is employed in the sulfide ore flotation process due to its excellent collection performance. Herein, we investigated the interfacial adsorption behavior of DDTC on the four …
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Synthesis and characterization of a novel collector for …
trate with a yield of 85.91% and sulfur content of 0.56% were obtained using a common collector. However, with the addition of the novel NPC, aluminum concentrate with a yield of 85.70% and sulfur
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Effects from changes in pulp nature after ultrasonic …
A study of the effects of the pulp nature on desulphurization and de-ashing during high-sulfur coal flotation is described in this paper. Highlighted are the use of a solution oxygen gauge, a pH value gauge and a surface tension gauge to investigate changes in the pulp nature related to changes in the oxygen content, the pH value and …
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Mechanochemical sulfidization of a mixed oxide-sulphide …
The results demonstrated that co-grinding with sulfur solely had the best flotation performance at the value of 0.5 wt.% and it was attributed to the possible existence of S O bonding on copper oxides surfaces. In addition, adding magnesium nitrate salt, magnesium powder, iron nitrate salt and aluminum powder as additive associated …
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Ultrasonic pretreatment for enhancing flotation separation …
Under optimized conditions of ultrasonic power, ultrasonic treatment time and solid weight, pilot-scale flotation produced a concentrate that the sulfur grade and recovery of concentrate increased by 11.63 % and 9.10 %, respectively, and the lead and silver recoveries of tailings increased by 8.72 % and 9.50 %, respectively, compared with …
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Characterization of sulfide film on smithsonite …
The smithsonite recovery was 32.5% at a sulfur ion concentration of 5 × 10 −5 mol/L, which can be considered as the point flotation begins. The recovery was 92.0% …
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Desulfurization Experimental Study on Flotation for High Sulfur …
The total sulfur rate of the coal sample was 4.973%, the inorganic sulfur content was more than 60%, which was the main component in the coal sample. The effect of grinding fineness, flotation pulp density, collector and frother on coal flotation desulfurization were investigated in this paper to remove the inorganic sulfur. The …
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Data-Driven Approximated Optimal Control of Sulfur Flotation …
Sulfur flotation process is a typical industry process with complex dynamics. For a sulfur flotation cell, the structure of the system model could be derived using first-principles and reaction kinetics. However, the model parameters cannot be obtained ...
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The influence of lime and sodium hydroxide conditioning on sulfide
The influence of two alkaline pH modifiers, namely sodium hydroxide and calcium hydroxide was investigated to evaluate and compare their effectiveness in pyrite rougher flotation of a refractory gold ore with a high sulfide sulfur grade (13% S 2-), using potassium amyl xanthate as the collector and Nascol 422 as the frother.The focussing …
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Fundamentals of froth flotation | ChemTexts
Froth flotation is a physicochemical separation process in which a mixture of fine mineral particles is mixed with water in a large tank (cell), and a swarm of small air bubbles …
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Minerals | Free Full-Text | Selective Flotation of Elemental Sulfur
An efficient flotation process was developed to selectively recover elemental sulfur from a high-sulfur pressure acid leaching residue of zinc sulfide concentrate. The process mineralogy analysis showed that the sulfur content reached 46.21%, and 81.97% of the sulfur existed as elemental sulfur which was the major mineral in the residue and …
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Synthesis and characterization of a novel collector for the
DOI: 10.1016/j.partic.2022.11.012 Corpus ID: 254359378; Synthesis and characterization of a novel collector for the desulfurization of fine high-sulfur bauxite via reverse flotation
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Study on the Flotation Desulfurization of High-sulfur …
Study on the Flotation Desulfurization of High-sulfur Bauxite in Northwest[J]. Multipurpose Utilization of Mineral Resources, 2020, (6): 127-130. doi: 10.3969/j.issn.1000-6532.2020.06.021. Citation: Li Zhenyu. Study on the Flotation Desulfurization of High-sulfur Bauxite in Northwest[J].
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1 Froth Flotation – Fundamental Principles
1 Froth Flotation – Fundamental Principles. Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to …
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Ultrasonic pretreatment for enhancing flotation separation …
Pilot-scale flotation tests were performed to evaluate the industrial separation feasibility of residue with ultrasonic pretreatment under continuous feed conditions. The flotation process is shown in Fig. 10, and the results are summarized in Table 7. Separation with ultrasonic pretreatment produced a sulfur concentrate assaying of 93.87 …
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Volatilization behavior of lead, zinc and sulfur from flotation
As shown in Table 1, Table 2, the chemical composition of the flotation products is primarily zinc, lead, sulfur, iron, silicon and calcium, and is characterized by the high content of Pb + Zn (29.35%), S (9.97%), SiO 2 (7.60%) and CaO (11.10%). The ratio of zinc oxide and zinc sulphide content is nearly 2.1 (ZnSO 4 and (Zn,Mn)Fe 2 O 4 are both …
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Principles and practice of sulphide mineral flotation
flotation schemes to process high-grade, coarse-grained ores. Because of the depletion of these easy-to-process ores, however, flotation scientists and engineers are now confronted with the need to exploit existing low grade sulphide deposits with complex mineralogical composition and finely disseminated values. As a result
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method of separating ore chalcopyrite sulfur gold
Separation Of Iron Sulfur And Gold kwikkutcozaFlotation Sulfur 1characterization iopfoundationin. Separation Of Iron Sulfur And Gold separation of high ball mill sulfur from ore by flotation ensp enspJul 8 iron ores with a high content of impurities such as sulfur have been enhanced the flotation separation efficiency of calcium minerals due to were …
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Data-Driven Approximated Optimal Control of Sulfur Flotation
Sulfur flotation process is a typical industry process with complex dynamics. For a sulfur flotation cell, the structure of the system model could be derived using first-principles and reaction kinetics. However, the model parameters cannot be obtained under certain working conditions. In this paper, by using adaptive dynamic programming (ADP), …
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Enhanced desulfurizing flotation of high sulfur coal by
Abstract. Enhanced desulfurizing flotation of high sulfur coal was investigated using the sonoelectrochemical method. The supporting electrolyte used in this process was calcium hydroxide and the additive was anhydrous ethanol. The effects of treatment conditions on desulfurization were studied by a single-factor method.
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Desulfurization in high-sulfur bauxite with a novel thioether
1. Introduction. Bauxite is the main industrial raw material for alumina production. With the increasing scarcity of high-quality bauxite resources, high-sulfur bauxite has gradually become the main raw material for alumina production by the Bayer process in China, and the economic utilization of abundant high-sulfur bauxite resources …
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(PDF) Sulfur Nanoparticles: Synthesis, Characterizations and their
The efficacy of NPs is influenced by their chemical composition, size, coating, reactivity, and effective dose (Siddiqui et al. 2015). Sulfur nanoparticles (SNPs) have diverse applications ...
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Minerals | Free Full-Text | Selective Flotation of …
An efficient flotation process was developed to selectively recover elemental sulfur from a high-sulfur pressure acid leaching residue of zinc sulfide concentrate. The process mineralogy analysis showed that the …
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Principles and practice of sulphide mineral …
flotation schemes to process high-grade, coarse-grained ores. Because of the depletion of these easy-to-process ores, however, flotation scientists and engineers are now …
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1Characterization and Flotation of Sulfur-revised …
Introduction. Frash process, a solution mining method operated at an elevated temperature and pressure, has been the major process for producing elemental sulfur in the United States for many...
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Synchronous Desulfurization and Desilication of Low …
depressant dosage from 50 to 300 g/t, the sulfur content in the concentrate increases first and then decreases. When the amount of starch was 300 g/t, the sulfur content decreases to a minimum of 0.51%. When the amount of starch was 50 g/t, the sulfur content of the concentrate was 0.54%, which also achieved good desulfurization effect. At the ...
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Characterization and Flotation of Sulfur from …
Upgrade sulfur from sulfide ores through froth flotation, purification, and removal of selenium and tellurium. Achieve high-grade sulfur concentrate with minimal reagent …
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