Selective sulfidation of metal compounds | Nature
ResultSulfidation, where Y is now sulfur (S), is a promising avenue to separate mixed oxides, where X is oxygen (O). ... resulting in a total KAX solution volume in the flotation cell of 750 ml. The ...
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Minerals | Free Full-Text | The Challenges and Prospects of
ResultFlotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings. However, a significant amount of copper is lost into tailings during the processing; therefore, …
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SRU Sulphur Recovery Process
ResultSULFUR FLOTATION. The superior cell-to-cell design and the principles of "Sub-Aeration" incorporated in "Sub-A" Flotation Machines enable the operator to produce the highest possible grade concentrate with excellent recovery. A rougher concentrate is first produced, averaging 65% sulphur. This is then subjected to …
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Metals | Free Full-Text | Flotation Performance, Structure …
ResultO-isopropyl-N-ethyl thionocarbamate (IPETC) collector was used to selectively recover elemental sulfur from a high-sulfur residue, and its flotation performance, structure–property relationship and adsorption mechanism to elemental sulfur were studied. The raw ore flotation test showed that IPETC displayed superior …
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Deister Flotaire Column Flotation Cell
ResultThe FLOTAIRE Flotation Cell is a column flotation cell designed to utilize aspirated gas in surface tension lowered water to generate extremely fine bubbles. ... Tests run over a period of 4 months indicated the following advantage from use of the FLOTAIRE Flotation Cell. Reduced ash and sulfur content in the …
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Enhanced flotation of refractory gold ore by using sulfur …
ResultThe ammonium thiosulfate, sulfur and emulsified kerosene were added into the mill simultaneously and mixed with the gold bearing pulp under the natural pH condition (about 7.5). After then the ore samples were transferred directly into the flotation cell. Pulp pH should be adjusted to 6.5 by H 2 SO 4. Flotation …
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How Antimony is Processed by Flotation
ResultThe conditioner overflow passes to an 8-cell "Sub-A" Flotation Machine, arranged to provide four rougher cells, two scavenger cells and one cell for each of two stages of cleaning. The distinctive cell-to-cell design of "Sub-A" Flotation Machines permits the transfer of the various pulp streams within the …
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Separation of elemental sulfur from hydrometallurgical …
ResultThe elemental sulfur fraction of the flotation concentrate melts and the unreacted sulfide particles are suspended in the melt. This melt is continuously circulated through a stainless steel vacuum filter press and recycled to the dirty sulfur pit. ... This was for single stage flotation cells and higher recoveries can …
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Lime use and functionality in sulphide mineral flotation: A …
ResultLime plays a critical role in flotation by controlling pulp chemistry and collector adsorption. •. Lime is the most economical and commonly used reagent for pH control in flotation. •. Ca 2+ ions in lime can enhance depression of minerals and flotation selectivity in a variety of ores. •.
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Flotation Equipment | SpringerLink
ResultFlotation cell is usually composed of tank, aeration-agitation device, froth scraper, pulp discharge valve, and liquid level control mechanism. ... lead, zinc, nickel, molybdenum, sulfur, iron, gold, bauxite, phosphate rock, potassium salt, etc. It is suitable for ores requiring small aeration rate and narrow variation range, such …
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Pilot-scale Studies of Ash and Sulfur Removal from Fine Coal …
ResultThe cyclojet cell, which was developed by H. Hazlioglu and I. Toroglu in 2006, utilizes an alternative jet flotation technique. Apart from being based on the working principle of jet flotation, the cyclojet cell incorporates centrifugal forces into the flotation process, thus providing an excellent separation for ash and pyritic sulfur …
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Enhancing nickel grade and recovery with counter
ResultThe REFLUX™ Flotation Cell (RFC™) is an innovative flotation system that offers a transformation in the hydrodynamics of flotation. ... (SiO 2) grade of 31.4% and sulfur grade of 24.9% with a particle size P 80 of 125 μm. The nickel was from pentlandite as well as the pyrrhotite, though the latter has a very …
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Water Quality in PGM Ore Flotation: The effect of …
ResultFluorescence (XRF) and Leco was used for determination of sulphur. For the 2-phase batch flotation test work only the water type and pH were varied. Prepared plant water solutions were transferred directly to a 3 L Barker flotation cell. The operating conditions of the cell were maintained as in the 3-phase test work with …
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Efficient flotation recovery of lead and zinc from refractory …
ResultSix hundred grams of the samples was ground with a wet ball mill to achieve an 82% passing of 74 μm. Flotation experiments were carried out using a self-aerated XFD-63 flotation machine (Jilin Exploring Machinery Plant, Jilin, China) with a 1.5 L volume for rougher-scavenger flotation and 0.5 L for cleaner …
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Flotation Decarbonization and Desulfurization of a High-Sulfur …
ResultFlotation experiments were performed on an XFGII flotation machine assembled with a 1500 mL plexiglass cell at 1920 rpm speed. The flow chart of the flotation experimental procedure is shown in Figure 2. 3. Results and Discussions ... which indicated that the butyl xanthate was an efficient collector for pyrite in the …
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Processes | Free Full-Text | Interfacial Adsorption Mechanism …
ResultDiethyldithiocarbamate (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 main mineral phases of high-sulfur residue: sulfur, pyrite, sphalerite, and lead sulfate. The adsorption behavior …
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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
ResultAt low pH (approximately pH 5), the iron dissolves from the mineral, forming a hydrophobic surface deficient in iron and rich in sulfur, thus resulting in a higher flotation rate (Equation (1)). At high pH (pH > 9), the iron form a hydroxide on the surface, which, being a hydrophilic species, decreases the flotation rate …
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Optimal control of sulphur flotation process based on …
ResultSulphur flotation process is highly non-linear, and have strong interactions between the manipulated variables, technical indexes and …
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Enhanced desulfurizing flotation of high sulfur coal by
ResultThis study aimed to evaluate the feasibility of enhanced desulfurizing flotation of high sulfur coal via the sonoelectrochemical method. In the − 0.076 mm coal, optimal conditions include an anhydrous ethanol concentration of 2.1 mol/L, a sonoelectrolytic time of 20 min, current density at 15 × 10 −3 A/cm 2, and …
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Pyrite recovery mechanisms in coal flotation
ResultAbstract. In most operating coal-cleaning plants, a significant amount of pyrite is recovered in the froth during flotation of high-sulfur coal. This pyrite recovery is commonly believed to be a result of pyrite particles floating due to hydrophobicity. However, even though a wide range of pyrite depressants have …
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Minerals | Free Full-Text | Selective Flotation of Elemental Sulfur
ResultAn 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 …
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Minerals | Free Full-Text | Simultaneous Recovery of Niobium and Sulfur
ResultExploring new ways to acquire niobium resources is essential to resolve niobium supply risks, due to the fact that, at present, 99% of niobium is controlled by only two countries. In the present work, a flotation technique was applied to separate niobium from low-grade niobite ore. To maximize the utilization …
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Sulfate reduction and elemental sulfur recovery using
ResultThis study aimed to realize simultaneous sulfate reduction and elemental sulfur recovery using a novel photoelectricity microbial electrolysis cell (PMEC) under low applied voltages. At an applied voltage of 1.2 V, the sulfate reduction rate in the PMEC reached 200 ± 2.3 mg L -1, and 46.3 ± 7.9% of the …
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(PDF) Data-Driven Approximated Optimal Control of Sulfur …
ResultFor a sulfur flotation cell, the structure of the system model could be derived using first-principles and reaction kinetics. However, the model …
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Froth flotation beneficiation and physiochemical
ResultThe main objective of this research is to upgrade the heating value of coal from the Achibo-Sombo-Dabaso area by minimizing the ash and sulfur content using froth flotation techniques, applying diesel oil as a collector and n-octanol as frother reagents. The selection of this reagent is based on the viscosity, low cost …
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Data-Driven Approximated Optimal Control of Sulfur Flotation
ResultDownloadable! 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 …
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Flotation Separation of Pyrite from Refractory High-Sulfur Bauxite
ResultBench-scale flotation tests were carried out in a 1.5 L RK/FD III type flotation machine. The high-sulfur bauxite sample (150 g) was firstly ground to 75% passing a 74 μm sieve at a pulp concentration of 60 wt% in a RK/ZQM ball mill. The pulp with solid density of 10 wt% was then conditioned in the flotation cell for …
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Data-Driven Approximated Optimal Control of Sulfur Flotation …
ResultSulfur 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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Data-Driven Approximated Optimal Control of Sulfur …
ResultAbstract. 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 …
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The profile of a single sulphur flotation cell.
ResultDownload scientific diagram | The profile of a single sulphur flotation cell. from publication: On-Line Froth Depth Estimation for Sulphur Flotation Process With Multiple Working Conditions | This ...
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