Effect of ultrasound pre-treatment on carbonaceous copper-bearing shale
Although numerous studies have been implemented on identifying the impact of acoustic waves on mineral beneficiation, its fundamental aspects remain unclear in the literature. The present work, for the first time, systematically investigates the role of ultrasound pre-treatment (UPT) in the carbonaceous copper-bearing shale flotation.
Statistical analysis of Egyptian oil shale column flotation
ABSTRACT Evaluation possibility of a low-quality Egyptian oil shale from Wadii El-Nakhil, Red sea region as an alternative clean fuel by advanced flotation technique via column flotation was investigated. XRD analysis showed that the non-clay minerals associated with the oil shale sample include; quartz, siderite, apatite, …
Challenges related to flotation cleaning of oil shales.
This paper discusses specific challenges regarding flotation behavior of oil shales with reference to the surface characteristics and behavior of oil shale entities – probably the …
Flotation Cell Design: Application of Fundamental …
Flotation machines, in general, may be categorized into four different classes: (i) mechanical or con-ventional cells; (ii) energy-intensive pneumatic cells; (iii) column …
An investigation into beneficiation of Jordanian El-Lajjun oil shale …
Removing or reducing of these impurities before retorting can reduce the cost of oil shale processing. In that regard, pretreatment of oil shale by flotation represents one of the favorable solutions.
Shale | Properties, Composition, Formation, Uses
Shale is a laminated or fissile clastic sedimentary rock that composed of predominance of silt and clay other minerals, especially quartz and calcite.
A review of effects and applications of ultrasound in mineral flotation …
Altun et al. studied the ultrasonic cleaning effect of the UPT method on the flotation performance of oil shale [73]. The flotation of −150-μm oil shale was treated using a horn-type ultrasound device with 20% to of 250 W total power.
Flotation cell
The primary difference in flotation cells is the two ways of introducing the gas. Gas introduced into the bottom of a cell and dispersed into a water in the form of very fine bubbles will rise to the top of that cell and carry with it suspended solids and entrained oil.
Enhancement of coal flotation using impact flow …
Semantic Scholar extracted view of "Enhancement of coal flotation using impact flow conditioning pulp" by Hainan Wang et al.
Occurrence of Minerals in Coal and Its Geological …
The precombustion washing and washability of coal are increasingly gaining attention as a clean coal technology in China. In this study, the raw coal was collected from different coal seams in the south of Qinshui Coalfield, and flotation experiments were carried out in the laboratory after simple crushing. X-ray diffraction was used for …
Potential for upgrading El-Nakheil oil shale by froth flotation
This paper aims at determining the potential for upgrading El-Nakheil oil shale, Egypt, using froth flotation. Samples were prepared by comminution followed by sieving into different size fractions.
Froth Flotation Process
Froth Flotation is a very important process in the field of mineral processing which is utilized for the purpose of extraction of minerals from Ore. It is a part of surface chemistry in which we selectively separate the minerals from the unwanted material. This process is used in a variety of industries and is very crucial in each one of them.
(PDF) Beneficiation of low grade graphite ore of eastern India …
Low-grade graphite ore from Jharkhand, India, with a carbon content of 9%, was subjected to primary beneficiation by froth flotation technique using the naturally hydrophobic property of graphite ...
Beneficiation of oil shale by froth flotation: critical review
Flotation tests were conducted in Denver flotation cell using 500 g shale at 50 % solids. Flotation feed was ground in a rod mill ( 50 % solid) for two hours to reduce particle size …
Mechanism of shale oil as an effective collector for oxidized …
The strengthening mechanism of oxidized coal flotation using shale oil was systematically explained based on studies of bubble–particle attachment and detachment by induction time, wrap angle, and bubble–particle attachment and detachment visualization tests. Flotation results prove that shale oil can evidently improve the clean coal yield.
Flotation
The Inspiration Copper Co. uses flotation as the prime process, and its 800 tons per section is treated by 24 roughing-cells and 4 cleaners. In this case the cells are run in series, the primary cells treating the original feed and the secondary cells re-treating only the slime from the primary tailing after the sand has been removed.
A critical review on natural surfactants and their potential for
The investigation results suggest that flotation is generally affected by the concentration of bacterial biomass used in the micro-flotation cell. Apatite recorded a high flotation efficiency of around 90%, while quartz achieved 14% flotation at pH 5 and a high concentration of bacterial biomass under identical experimental conditions.
Technological assessments on recent developments in fine …
Several flotation cells including Jameson, Reflux™ and Imhoflot™ cells, oscillating grid flotation cell and staged flotation reactor were presented as efficient cells …
Use of Ultrasound to Enhance Flotation Performance: …
a lab-scale Wedag flotation machine, using a 650 ml flotation cell and optimum flotation conditions found in the previous phase of this work that solely aimed at finding out the most favorable flotation parameters for this oil shale sample. These …
Wemco II Flotation Cell
Over decades, original WEMCO flotation cells built their reputation on delivering the highest recovery. WEMCO II builds on the success of its predecessor by offering more recovery with the added benefit of air control and changes to …
Review on advances in mineral processing technologies …
Mechanical flotation cells utilise an impellor to agitate the slurry and produce turbulent regions for bubble particle attachment, whereas in pneumatic flotation cells pulp and air are introduced together into the cell through a nozzle, also termed a downcomer, that promotes bubble-particle contact (Gupta and Yan, 2016).
Kinetic modelling of flotation column and Jameson cell in coal
The Jameson flotation cell and flotation column, which have many uses worldwide but are not used throughout the plant in Turkey, were used to in vestigate the separation possibilities of coals ...
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In this study, the film flotation, using a methanol-water mixture as a separating liquid, was tested not only to reveal the material's hydrophobicity but also to upgrade two oil shale …
Revealing Oil Shale Hydrophobicity and Its Possible
Keywords: oil shale, film flotation, methanol-water solution, organic content, upgrading, ... The samples were primary crushed to about 1.0 cm ... angle cell of 9 × 9 cm length and 13.5 cm depth, as in the procedure described by Fuerstenau and co-work-
(PDF) FLOTATION: Physical theory and applications
PDF | Summary The above discussions suggest that the flotation kinetics, at least at the primary stage, is described by the first-order reaction... | Find, read and cite all the research you need ...
Investigation of mechanism of ultrasound on coal flotation
A Wemco type flotation cell was fitted with transducers and tests were carried out at variable frequency and power. ... the aim is to elucidate the mechanism underlying the impact of ultrasound on graphite flotation. The experimental results indicated that the ultrasonic cavitation intensity exerted a significant influence on the …
Recent Advances and Applications of Dissolved Air …
As illustrated in Figure 1, a rectangular DAF system may consist of the following primary components: • Contact cell or coagulation chamber to provide contact of small air bubbles with flocculated particles. • Flotation cell to provide surface area and a quiescent zone for the formation of float.
Regulation of bubble size in flotation: A review
A collision between bubbles usually occurs based on their relative velocity, which may be caused by turbulent fluctuations of the slurry in the flotation cell. The slurry in the flotation cell moves irregularly, and the velocity and pressure at any point exhibits a high-frequency pulsation over time, resulting in a non-uniform velocity gradient ...
Mechanism of shale oil as an effective collector for oxidized …
Semantic Scholar extracted view of "Mechanism of shale oil as an effective collector for oxidized coal flotation: From bubble–particle attachment and detachment point of view" by Ming Li et al.
Application of statistical analysis for optimizing of column …
Column flotation of Alabama oil shale was investigated by evaluating the effects of para- meters like sparger pore size, feed solid concentration, frother dosage, …
Use of Ultrasound to Enhance Flotation Performance: …
If this study can reveal the usefulness of ultrasonic-aided flotation in the separation of ash making constituents, it can contribute to prospective strategies for utilization of oil shales …
Basic Study of Flotation Dynamics | SpringerLink
To realize the flotation process for mineral particles, the primary conditions are contact and adhesion of mineral particles to bubbles. After adhesion of mineral particles to bubbles, the particle-bubble aggregate rises in the flotation machine, forming mineralized froth.
Processes | Free Full-Text | Flotation in Water and Wastewater …
Flotation constitutes a separation process that originated from mineral processing. Nowadays, wider applications have been found and compared to flotation for water and wastewater treatment. Stress in the present review paper was mainly applied to heavy metal ions recovery by flotation and the respective mechanism followed, being …
Effect of variation in pine oil on flotation
Low-grade graphite ore from Jharkhand, India, with a carbon content of 9%, was subjected to primary beneficiation by froth flotation technique using the naturally hydrophobic …