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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 23 for “"hydrocyclone"”.
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Particle size estimation of hydrocyclone overflow
… describes the development of a robust hydrocyclone particle size estimation model that will form the basis of an industrial soft-sensor. Aside from increased throughput, efficient product regulation constitutes the primary function of a milling circuit control system. Before the milling …
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Application of CFD to hydrocyclone flow prediction
… the hydrodynamic behaviour and operation of the hydrocyclone are still being sought in order that, its full classification potential may be realised. Current models describing such behaviour are predominantly highly empirical hence the need for continued complementary research via computational …
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The influence of slurry viscosity on hydrocyclone performance
Many of the empirical hydrocyclone cut size models available consider the feed solids content to be an important variable in determining the efficiency and resultant classification. However, feed viscosity as a whole is admittedly a more accurate variable to consider as it can be affected by many …
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Beneficiation of fine coal using the air-sparged hydrocyclone
The Air-Sparged Hydrocyclone (ASH) is a high capacity flotation device which is alleged to be more efficient for the flotation of fine particles than conventional flotation equipment. The principal aims of this thesis were to investigate the use of an ASH in the flotation of South African coal …
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Investigation into the effect of slurry viscosity on hydrocyclone performance, An
Includes bibliographical references.
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Monitoring an industrial hydrocyclone using frequency domain multiplexing electrical impedance tomography
… Multiplexing (FDtvf) to monitor an industrial hydrocyclone. In order to utilise resources more effectively, to reduce negative environmental impact, to satisfy demands and legislations on product quality, there has been a rapid increase in research for optimisation and control of hydrocyclones, …
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Hydrocyclone Implementation at Two Wastewater Treatment Facilities To Promote Overall Settling Improvement
Hydrocyclone density-driven particle separation may offer up improved settling performance for wastewater treatment facilities experiencing poor settleability. Hydrocyclones are fed mixed liquor through the feed inlet and experience a centrifugal motion that separates solids based on density. The …
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Assessing the effect of cone ratio, feed solids concentration and viscosity on hydrocyclone performance
… of varying degrees of liberation and size. Hydrocyclones are commonly used to classify these particles. If the classification stage is not efficient, both grinding and flotation cannot be optimised or operated efficiently. Ores that are mined in industry contain metals of varying specific …
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Response to parameter variation of a one-inch diameter hydrocyclone for pyritic sulfur removal
… the literature showed that as the diameter of a hydrocyclone was decreased, smaller particles could be effectively separated on the basis of specific gravity. Consequently, a laboratory scale study was conducted to determine the possibility of removing pyritic sulfur from fine coal using a 1.0" …
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Improvement to hydrocyclone used in separating particles from produced water in the oil and gas industry.
Hydrocyclone is used to separate particles from produced water. It can be used in different industries, including oil and gas, water treatment and pharmaceutical (among others). The hydrocyclone can effectively separate particles larger than 10μm, but the efficiency is greatly reduced when the …
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Contribution to the understanding of the three-product cyclone on the classification of a dual density platinum ore
… effects exhibited by the conventional hydrocyclone in classifying ores that contain different density components motivated the AMIRA P9 project to look into modifications to the conventional hydrocyclone that can improve separation by component density. In this project a cyclone termed …
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Investigating the potential of using hydrocyclone-fine screen hybrid systems to improve the performance of classification circuits
… that controls the performance of the circuit. Hydrocyclones are normally used to perform the classification function. They offer numerous advantages that include, the ability to handle high throughputs, low floor space occupation and relatively low capital and running costs. Despite these …
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Large-Eddy Simulations of Hydrocyclones
… and particle classification process in hydrocyclones using large-eddy simulations of turbulent multiphase flow. Two types of hydrocyclones are considered. The first is a classifying hydrocyclone, and the second is a mineral flotation hydrocyclone, also known as an air-sparged …
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Hydrocyclone fractionation of chickpea flour and measurement of physical and functional properties of flour and starch and protein fractions
… technique, i.e. applying centrifugal force in a hydrocyclone, was employed to separate starch granules from protein particles. Using a hydrocyclone, centrifugal force was applied to chickpea flour particles. Chickpea flour was suspended in two different media, isopropyl alcohol or deionized …
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Evaluation of Methods for Improving Classifying Cyclone Performance
… reduce the bypass of ultrafine material to the hydrocyclone underflow while maintaining particle size cuts in the 25-50 m size range. Another method of reducing bypass is to retreat the cyclone underflow using multiple stages of classifiers. However, natural variations in the physical …
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Gravity selector-enabled kenaf recirculation and reuse as a renewable ballasting agent for sludge settleability enhancement in a municipal wastewater secondary process: A real wastewater pilot-scale study
… or a combination of these approaches. Hydrocyclone-enabled continuous flow densification has been applied for full-scale applications; however, it requires long startup times and, in some instances, results in poor stability of the densified floc. Migrating carriers hold promise to …
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Investigation of Flash Flotation Technology Utilizing Centrifugal Forces and Novel Sparging Methods
… area of centrifugal flotation is the Air Sparged Hydrocyclone (ASH), which has proven capabilities in achieving quality products at specific capacities greater than traditional flotation methods. However, the ASH technology ultimately suffers from sparger plugging problems. Therefore, three unique …
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Modélisation numérique d’un décanteur utilisé dans le traitement d’eaux usées pour l’exploitation minière
… souvent en surface ou en profondeur à l’aide d’hydrocyclones. Cette dernière option est rejetée par Technosub, car de nombreux problèmes d’usure apparaissent lors du traitement d’un débit important. Étant donné la difficulté d’obtenir des résultats expérimentaux et de tester de nouvelles …
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Optimisation of Mare's Tail coalescer technology.
… to predict the separation efficiency of a hydrocyclone or compact floatation unit (CFU) downstream of the Mare's Tail Coalescer. SEM2 can be used to predict the coalescence efficiency of the Mare's Tail coalescer based on the growth of oil droplet size. SEM1 was developed and tested using …
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Fine coal beneficiation: comparison study of the separation efficiency of a dense medium cyclone and flat-bottom cyclone
… beneficiate the NGM-laden coal. A conventional hydrocyclone was modified into a flat-bottom cyclone with an extended cylindrical section and wide cone angle to promote the formation of an autogenous separating medium. This cyclone is sometimes called a water-only cyclone (WoC) in coal washing. …
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