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Dissertations / Theses on the topic 'Hydrocyclone'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Ma, Bufeng. "Epuration des eaux résiduaires de l'industrie pétrolière par hydrocyclonage : Mise au point d'un nouveau hydrocyclone triphasique." Toulouse, INSA, 1993. http://www.theses.fr/1993ISAT0011.

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Cette etude a pour objectif de solutionner le traitement des eaux de production de l'industrie petroliere chargees en hydrocarbures emulsionnes et en mes par hydrocyclonage. La premiere partie de cette etude est relative a la mise au point d'une nouvelle methodologie de calcul applicable aux hydrocyclones de type thew basee sur le calcul des decanteurs canal permettant de calculer l'efficacite d'un hydrocyclone diphasique liquide/liquide (hydrocarbure-eau). Cette methodologie permet notamment le trace des trajectoires des microgouttelettes dispersees a l'interieur de l'hydrocyclone, une etude

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2

Smith, Vincent Combemere. "Particle size estimation of hydrocyclone overflow." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/5396.

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Bibliography : leaves 83-86.<br>This dissertation 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 circuit product size can be regulated, it should be measured or estimated. The particle size estimation algorithm developed provides a reliable estimate of the product size and will compliment or replace conventional size measurement devices.

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3

Changirwa, Robert M. M. "Phenomenological separation in a three-phase hydrocyclone." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ31520.pdf.

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4

Dlamini, Mduduzi Felix. "Application of CFD to hydrocyclone flow prediction." Master's thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/5573.

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Includes bibliographical references.<br>The mechanical simplicity of the hydrocylone deceptively suggests non-intricate and well-understood device hydrodynamics. On the contrary, improved understanding on 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 techniques such as Computational Fluid Dynamics (CFD). This dissertation presents the outcome of an

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5

SAENZ, JUAN SERGIO ROMERO. "MATHEMATICAL MODELING AND SIMULATION OF A HYDROCYCLONE MODEL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1997. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19769@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Este trabalho apresenta um modelo matemático completo e a implementação de um sistema computacional para a simulação do escoamento em um hidrociclone, que leva em conta o núcleo de ar como uma superfície livre, caracterizando esta interface livre formada como do tipo Young-Laplace. Pelas características do escoamento foi considerada a difusão turbulenta, que foi necessário acrescentar para poder ajustar bem o modelo aos dados experimentais. São aproximados os campos de velocidades e pressões, assim como a forma e localização da in

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6

Andersson, Rasmus. "Evaluation of two hydrocyclone designs for pulp fractionation." Licentiate thesis, KTH, Träkemi och massateknologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-25272.

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The process conditions and fractionation efficiency of two hydrocyclone designs, a novel and a conventional conical design, were evaluated. The novel design comprised a modified inlet section, where the pulp suspension had to pass a narrow ring-shaped opening, and a very compact fractionation zone. The influence of feed concentration and fine fraction mass ratio was studied. The trials were performed with never-dried, unrefined bleached chemical softwood pulp. Fractionation efficiency was evaluated in terms of change of surface roughness of handsheets made out of the fractions and the feed pul

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7

Waters, Jason G. "The influence of slurry viscosity on hydrocyclone performance." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/14417.

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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 factors, including solids content, particle size distribution, particle size, mineralogy, pulp chemistry, particle shape and carrier fluid temperature. Earlier theoretical models did try to incorporate slurry viscosity but were developed for very low solids content systems due to the difficulty in mea

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8

Rouse, B. D. "Modelling of small diameter hydrocyclones." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371290.

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9

Cullivan, James Christian. "Simulation of hydrocyclone performance using 3D computational fluid dynamics." Thesis, University of Exeter, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246379.

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10

Breed, Ashley Wayne. "Beneficiation of fine coal using the air-sparged hydrocyclone." Master's thesis, University of Cape Town, 1992. http://hdl.handle.net/11427/21831.

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Bibliography: pages 173-185.<br>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 ultrafines (-150 micron), and to determine the effect of various design and operating parameters on the performance of the process, in terms of the product yields and grades obtainable. The testwork was carried out on a typical Witbank coal, from the Kleinkopje Colliery, w

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11

Sáiz, Rubio Verónica. "Design of an Energy-saving Hydrocyclone for Wheat Starch Separation." Thesis, Växjö University, School of Technology and Design, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-5311.

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<p>The nearly unlimited applications and uses of starch for food industry make this natural polymer a unique component; no other constituent can provide consistence and storage stability to such a large variety of foods. Starch can be extracted from agricultural produce through either chemical processes or physical separation. The latter involves the application of centrifugal forces by means of hydrocyclones. A hydrocylcone is a device which separates, through physical methods, two phases of different densities. There are three flows involved: the feed (mixture introduced in the hydrocyclone)

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Mai, Manga Mohamed. "Caractérisation de l'opération d'un hydrocyclone en présence d'anomalies de fonctionnement." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28054/28054.pdf.

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Roldan-Villasana, Edgardo Javier. "Modelling and simulation of hydrocyclone networks for fine particle processing." Thesis, University of Manchester, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264312.

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14

Hargreaves, John H. "Computing and measuring the flowfield in a de-oiling hydrocyclone." Thesis, University of Southampton, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318317.

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RAPOSO, GELMIREZ MARTINS. "NUMERICAL SIMULATION FOR HYDROCYCLONE DESIGNED TO HIGH OIL CONTENT APPLICATION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=13794@1.

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A separação ciclônica vem se tornando nas últimas décadas um processo cada vez mais utilizado na separação gás-líquido, líquido-líquido e sólidolíquido, principalmente na indústria do petróleo. Com o crescente aumento das prospecções marítimas torna-se necessário reduzir o peso e a dimensão de equipamentos. Isto pode ser conseguido com a separação ciclônica, uma vez que pode-se criar um campo centrífugo diversas vezes superior ao campo gravitacional, tornando possível o desenvolvimento de equipamentos bastante compactos. A principal diferença entre os diversos ciclones é a sua geometria. A oti

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Uahengo, Foibe Dimbulukwa Lawanifwa. "Estimating particle size of hydrocyclone underflow discharge using image analysis." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86365.

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Thesis (MScEng)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Hydrocyclones are stationary separating machines that separate materials based on centrifugal separation and are widely used in chemical engineering and mineral processing industries. Their design and operation, compact structure, low running costs and versatility all contribute to their applications in liquid clarification, slurry thickening, solid washing and classification. With any of these operations, the overall profitability of the process relies on the effective control of the process equipment. However, in practice,

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Slack, Michael David. "Separation of particles from liquids by the solid core cyclone." Thesis, University of Newcastle Upon Tyne, 1997. http://hdl.handle.net/10443/750.

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A computational and physical modelling study is made of the removal of inclusions from liquid steel by use of a novel form of hydrocyclone in which a solid conical core that replaces the conventional vortex finder acts as a guide to the spiralling liquid flow and acts also as a capture surface for disentrained inclusions. In preliminary investigations, an inviscid computational model is derived that is found to be effective in outlining the general behaviour of specific hydrocyclone flows when tested against published experimental results. The more generally applicable commercial CFD code Flue

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18

Ferguson, John William James. "Swirling flows in conical vessels." Thesis, University of Leeds, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329778.

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Elsayed, Ahmed Elsayed Ahmed. "Application of hydrocyclone for cell separation in mammalian cell perfusion cultures." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=977727440.

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Capindissa, Vladimir C. "Monitoring an industrial hydrocyclone using frequency domain multiplexing electrical impedance tomography." Master's thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/5254.

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Includes bibliographical references (leaves 69-73).<br>This thesis describes the implementation of an Electrical Impedance Tomography (EIT) system using Frequency Domain 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, as industries consistently demand new and more cost effective ways of production. In an industrial setup, it is very difficult to dete

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21

Siangsanun, Vorasiri. "Hybrid process : hydrocyclone, coagulation, floculation and flotation for water treatment process." Thesis, Toulouse, INSA, 2010. http://www.theses.fr/2010ISAT0019/document.

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L'objectif de cette étude est de développer un procédé hybride qui combine à lacoagulation, la floculation et le procédé de flottation dans un hydroclone pour réaliser letraitement de l'eau. Le développement sert à déterminer la caractérisationhydrodynamique ainsi que les conditions optimales pour réaliser le traitement de l'eau.L'étude de caractérisation hydrodynamique est réalisée à l’aide d’une simulationnumérique (Computational Fluid Dynamics). Le travail expérimental a été réalisé à l’aidede la technique dite de l'échographie Doppler afin d’étudier l'hydrodynamique. Lesrésultats ont servi

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Wong, Kok W. "A neural fuzzy approach for well log and hydrocyclone data interpretation." Thesis, Curtin University, 1999. http://hdl.handle.net/20.500.11937/1281.

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A novel data analysis approach that is automatic, self-learning and self-explained, and which provides accurate and reliable results is reported. The data analysis tool is capable of performing multivariate non-parametric regression analysis, as well as quantitative inferential analysis using predictive learning. Statistical approaches such as multiple regression or discriminant analysis are usually used to perform this kind of analysis. However, they lack universal capabilities and their success in any particular application is directly affected by the problem complexity.The approach employs

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Wong, Kok W. "A neural fuzzy approach for well log and hydrocyclone data interpretation." Curtin University of Technology, School of Electrical and Computer Engineering, 1999. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=10344.

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A novel data analysis approach that is automatic, self-learning and self-explained, and which provides accurate and reliable results is reported. The data analysis tool is capable of performing multivariate non-parametric regression analysis, as well as quantitative inferential analysis using predictive learning. Statistical approaches such as multiple regression or discriminant analysis are usually used to perform this kind of analysis. However, they lack universal capabilities and their success in any particular application is directly affected by the problem complexity.The approach employs

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24

Lorentzon, Anna Cecilia Carolina. "Separation of microfibers from laundry waste water by hydrocyclone : In cooperation with Electrolux Professional." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-26449.

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Microfibers, textile fibres shorter than 5 mm, and are shed from fabrics during wear and released into the laundry effluent during washing. When passed through the wastewater treatment plant (WWTP), they adsorb toxins, heavy metals and pathogens before being released into the environment. Synthetic microfibers persist for long periods of time in aquatic environments and very little is known about the degradation of processed natural fibres. Hydrocyclonic separation was studied as a way to separate the microfibers from the effluent before being they get additionally contaminated at the WWTP. A

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Hou, Ruozhou. "Acoustic monitoring of particulate flows." Thesis, University of Exeter, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325765.

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Shin, Dongcheol. "Evaluation of Methods for Improving Classifying Cyclone Performance." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/42679.

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Most mineral and coal processing plants are forced to size their particulate streams in order to maximize the efficiency of their unit operations. Classifiers are generally considered to be more practical than screens for fine sizing, but the separation efficiency decreases dramatically for particles smaller than approximately 150 μm. In addition, classifiers commonly suffer from bypass, which occurs when a portion of the ultrafine particles (slimes) are misplaced by hydraulic carryover into the oversize product. The unwanted misplacement can have a large adverse impact on downstream sepa

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Ko, Jordan. "Numerical modelling of highly swirling flows in a cylindrical through-flow hydrocyclone." Licentiate thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-293.

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Bamrungsri, Pradipat. "Développement d’un procédé hybride de traitement d’eau couplant hydrocyclone, coagulation, floculation, flottation." Toulouse, INSA, 2008. http://eprint.insa-toulouse.fr/archive/00000262/.

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The aims of this research are to characterize the hydrodynamics in the hydrocyclones and find out the optimum operating conditions for the hybrid process. The objective of this hybrid process is to separate the solid particle from the turbid raw water. The hydrodynamics characterization study is carried out in the hydrocyclones to investigate the velocity profiles and velocity gradients. In this study, a new, simple and effective method is developed to study the hydrodynamics for the further research. The obtained experimental results are used as the background knowledge to design and explain

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Partin, Allison Kaitlyn. "Hydrocyclone Implementation at Two Wastewater Treatment Facilities To Promote Overall Settling Improvement." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/95488.

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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 variation in hydrocyclone nozzle sizes will report different calculated hydraulic and mass split percentages for the overflow and underflow. Previous research conducted with hydrocyclones have at multiple full-scale facilities used a 10 m3/hr hydrocyclone to promote better settleability as well as ai

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Davailles, Aurélien. "Effet de la concentration en solide sur les performances de séparation d'un hydrocyclone (simulations numériques et expériences de références)." Thesis, Toulouse, INPT, 2011. http://www.theses.fr/2011INPT0112/document.

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L'exploitation minière des sables bitumineux requiert une succession de nombreuses opérations pour séparer le bitume, l'eau et le sable. La séparation solide/liquide fait intervenir un hydrocyclone. Afin de limiter l'ajout d'eau, l'hydrocyclone doit fonctionner dans des conditions inhabituelles correspondant à une concentration élevée à l'alimentation. Une étude expérimentale a permis de caractériser l'ensemble des régimes de fonctionnement, l'influence de la concentration et des caractéristiques géométriques. De plus, des simulations numériques ont été réalisées avec NEPTUNE_CFD@Tlse. Deux mé

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Zaman, Ehsan. "Hydrodynamics of the hydrocyclone flow field : effects of turbulence modelling, geometrical and design parameters." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/63326.

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This thesis describes a numerical study of the effect of swirl on the flow hydrodynamics in hydrocyclones and rotating pipes. Kinetic (force balance) and kinematic (velocity field) analysis were performed to identify the relative importance of turbulence, convective, and pressure forces in these flows. We showed that convective and pressure forces in hydrocyclones are three orders of magnitude larger than the size of turbulent forces, and seven orders of magnitude greater than the viscous forces. We derived a new dimensionless parameter based on a ratio of Euler numbers that gave a unique re

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Muzanenhamo, Pharaoh Kudzaishe. "Assessing the effect of cone ratio, feed solids concentration and viscosity on hydrocyclone performance." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/13325.

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Includes bibliographical references.<br>In the mineral processing industry, comminution circuits contain slurries composed of a mixture of particles 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 gravity, which makes recovery of the desired metal challenging. This study focussed on the effect of the hydrocyclone spigot to vortex finder diameter ratio, ter

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Welling, Claire Marie. "Improving settleability and achieving biological phosphorus removal through the application of sidestream gravimetric selectors." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/64386.

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This project utilizes hydrocyclones in wastewater treatment to select for heavier solids, and has been used before in multiple small-scale systems. This is the first implementation of hydrocyclones in a full-scale plant for the purpose of increased settleability, while also achieving enhanced biological phosphorus removal without the use of an anaerobic selector. Hydrocyclones receive mixed liquor tangentially and separate light solids from more dense solids through their tapered shape, increasing the velocity of liquid as it moves downward and allowing for selection of a certain solids fracti

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SRIJAROONRAT, PIYARAT. "Nouvelles techniques de traitement des emulsions hydrocarbure - eau non stabilisees : ultrafiltration et couplage coalesceur - hydrocyclone." Toulouse, INSA, 1998. http://www.theses.fr/1998ISAT0031.

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Dans l'industrie petroliere, la majorite des emulsions rencontrees sont de type secondaire non stabilisees avec un diametre moyen des gouttes d'environ 10 microns. Dans ce cas de pollution, les techniques classiques de separation sont inefficaces. L'objet de cette these est de tester les potentialites des techniques membranaires d'ultrafiltration ou du couplage coalesceur-hydrocyclone pour resoudre ce type d'emulsions. L'ultrafiltration sur membrane s'est averee tres efficace. Les performances du procede dependent fortement des caracteristiques de l'eau usee traitee, du type de membrane utilis

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Karjalainen, M. (Mikko). "Studies on wheat straw pulp fractionation:fractionation tendency of cells in pressure screening, hydrocyclone fractionation and flotation." Doctoral thesis, Oulun yliopisto, 2015. http://urn.fi/urn:isbn:9789526210063.

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Abstract Plant fibres are an important part of modern daily life. The most obvious consumer products manufactured from them are paper, cardboard and the fibreboards used in the construction and furniture industries. Plants producing a woody stem are the most widely used raw materials for these fibre products but fibres originating from other plants, i.e. non-wood fibres, are used too. One of the most promising potential non-wood fibre resource categories is that of grasses, of which the cereals are the most important plants grown worldwide. A huge amount of straw is generated as an agricultura

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Kucukal, Erdem. "EXPERIMENTAL AND CFD INVESTIGATIONS OF THE FLUID FLOW INSIDE A HYDROCYCLONE SEPARATOR WITHOUT AN AIR CORE." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1424174590.

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Renjie, Ke. "Experimental and CFD investigations of the fluid flow inside a hydrocyclone separator with an air core." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1449145729.

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Wanichkul, Bowornsak. "Etude des potentialités de nouveaux procédés de traitement d'émulsions hydrocarbure-eau : ultrafiltration, distillation et couplage coalesceur-hydrocyclone." Toulouse, INSA, 2000. http://www.theses.fr/2000ISAT0051.

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Shingote, Chinmay. "EXPERIMENTAL AND CFD INVESTIGATIONS OF THE CHARACTERICSTICS OF FLUID FLOW AND AIR CORE INSIDE A HYDROCYCLONE SEPARATOR." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1514227834603442.

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Muketekelwa, Saliya L. "Investigating the potential of using hydrocyclone-fine screen hybrid systems to improve the performance of classification circuits." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/27538.

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Classification is an integral part of comminution operations 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 advantages, hydrocyclones are inherently inefficient classifiers as they are predominantly dependent on hydrodynamics to effect separation. This effect is more prominent in operations handling complex ores such as a dual-density ore, where the heavy

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Bergström, Jonas. "Flow Field and Fibre Fractionation Studies in Hydrocyclones." Doctoral thesis, KTH, Fiber- och polymerteknik, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4175.

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Hydrocyclones can be used to fractionate fibres according to their papermaking potential. The obtained fractions typically differ in fibre wall thickness and/or degree of fibre treatment. Despite a multitude of potential application scenarios, the process has so far had little commercial success. This is largely explained by the low fractionation efficiency and unfavourable operating characteristics of the process. The fractionation efficiency of a hydrocyclone is closely related to its flow field. The influence of pulp concentration on the tangential velocity field was therefore studied, by u

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Hideghéty, Attila. "Modelování proudění suspenzí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230901.

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Diplomová práce se zabývá prouděním v hydrocyklónu. Hydrocyklón je separační stroj, kterým slouží k oddělování pevných částice z kapaliny (nejčastěji z vody). Díky tangenciálnímu vstupu do zařízení nastává silné vířivé proudění, které způsobuje přisávání vzduchu přes horní a dolní výtok. Toto vzduchové jádro hraje důležitou roli v separaci částic. Výpočty jsou provedeny pomoci CFD.

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MacKenzie, Jordan Alexander. "The effects of turbulent drag reducing additives on hydrocyclone operation : an evaluation of the flow behaviour and particle mechanics." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/49954.

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The effects of adding drag reducing additives to a pulp processing hydrocyclone were experimentally investigated. This work was found to contribute towards improving particle separation efficiencies and reducing energy consumption. To effectively evaluate the performance improvements, the flow field was initially measured using laser Doppler velocimetry. In the presence of a particulate phase, the motions of variously sized particles were measured using a three dimensional, dual camera set-up. Quantification of the drag reducing potential of the various polymer solutions and fibre suspensions

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SANTANA, Vítor Leão. "Beneficiamento de caulim na Região do Junco do Seridó/PB e Equador/RN e classificação de partículas em Hidrociclone." Universidade Federal de Campina Grande, 2017. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1321.

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Submitted by Marcos Wanderley (marcos.wanderley@ufcg.edu.br) on 2018-08-01T23:20:41Z No. of bitstreams: 1 VITOR LEÃO SANTANA - DISSERTAÇÃO(PPGEPM) 2017.pdf: 6018243 bytes, checksum: d94d5006180bb3355610a18fa1063c66 (MD5)<br>Made available in DSpace on 2018-08-01T23:20:41Z (GMT). No. of bitstreams: 1 VITOR LEÃO SANTANA - DISSERTAÇÃO(PPGEPM) 2017.pdf: 6018243 bytes, checksum: d94d5006180bb3355610a18fa1063c66 (MD5) Previous issue date: 2017-04-04<br>Capes<br>Na região compreendida entre as cidades do Junco do Seridó/PB e Equador/RN ocorrem diversos depósitos de caulins associados à alteração do

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Janse, van Vuuren Magrieta Jeanette. "On-line monitoring of hydrocyclones by use of image analysis." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6619.

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Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: Hydrocyclones are separation devices that are widely used throughout the chemical engineering and mineral processing industries. Although simple in design, the intricate flow structure of the device complicates control. As an alternative to conventional empirical and theoretical modelling, process state monitoring methods have recently been employed as a means to control hydrocyclones. The purpose of process state monitoring methods is to distinguish between the desired operating state with favourable

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BARBOSA, Enivaldo Santos. "Aspectos geométricos e hidrodinâmicos de um hidrociclone no processo de separação de sistemas multifásicos: aplicação à indústria do petróleo." Universidade Federal de Campina Grande, 2011. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1821.

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Submitted by Emanuel Varela Cardoso (emanuel.varela@ufcg.edu.br) on 2018-09-26T17:18:12Z No. of bitstreams: 1 ENIVALDO SANTOS BARBOSA – TESE (PPGEP) 2011.pdf: 14587469 bytes, checksum: 427f6de191a79c41d2bb8c8b12fba569 (MD5)<br>Made available in DSpace on 2018-09-26T17:18:12Z (GMT). No. of bitstreams: 1 ENIVALDO SANTOS BARBOSA – TESE (PPGEP) 2011.pdf: 14587469 bytes, checksum: 427f6de191a79c41d2bb8c8b12fba569 (MD5) Previous issue date: 2011-08-26<br>A indústria do petróleo tem se apoiado tradicionalmente na utilização de dispositivos separadores convencionais baseados no efeito da gravida

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Jokinen, H. (Hanna). "Screening and cleaning of pulp—a study to the parameters affecting separation." Doctoral thesis, University of Oulu, 2007. http://urn.fi/urn:isbn:9789514284526.

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Abstract The objective of this thesis was to determine the effects of design, operational and furnish quality parameters on pressure screen and hydrocyclone performance. The general contradictory interrelationships between capacity and selectivity in pressure screening and cleaning are commonly recognized, but deep understanding of the effects of design, operational and furnish quality parameters on the state of operation is missing. As separation selectivity is closely dependent on thickening and pulp passage, an operation curve for separation was applied and its application further develo

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Salvador, Fernanda Falqueto. "Estudo experimental do comportamento de um hidrociclone com cone e cilindro filtrantes." Universidade Federal de Uberlândia, 2013. https://repositorio.ufu.br/handle/123456789/15230.

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Fundação de Amparo a Pesquisa do Estado de Minas Gerais<br>Hydrocyclones are equipments destined to solid-liquid separation broadly used in industry due to its advantages, including compact geometry, high separation efficiency, simple maintenance and low cost. Depending on the user desired finality (concentration or classification), it is possible to potentiate the hydrocyclones performance by the simultaneous use of new unit operations to hydrocycloning, for example, the filtration. The filtering hydrocyclone was an equipment developed and improved by FEQUI/UFU researchers. In this way the ob

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LOPES, Bruno Oliveira. "Análise numérica do processo de separação de partículas minerais em hidrociclone via CFD." Universidade Federal de Campina Grande, 2018. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1502.

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Submitted by Emanuel Varela Cardoso (emanuel.varela@ufcg.edu.br) on 2018-08-20T19:12:54Z No. of bitstreams: 1 BRUNO OLIVEIRA LOPES – DISSERTAÇÃO (PPGEM) 2018.pdf: 2679561 bytes, checksum: 17af196ea163d4dbc0b28512ae9edb45 (MD5)<br>Made available in DSpace on 2018-08-20T19:12:54Z (GMT). No. of bitstreams: 1 BRUNO OLIVEIRA LOPES – DISSERTAÇÃO (PPGEM) 2018.pdf: 2679561 bytes, checksum: 17af196ea163d4dbc0b28512ae9edb45 (MD5) Previous issue date: 2018-02-23<br>A mineração é uma atividade econômica relevante em diversos países. No tratamento de minérios, a água é um insumo indispensável. Para a cla

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Botha, Stefan. "Hybrid non-linear model predictive control of a run-of-mine ore grinding mill circuit." Diss., University of Pretoria, 2018. http://hdl.handle.net/2263/66915.

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A run-of-mine (ROM) ore milling circuit is primarily used to grind incoming ore containing precious metals to a powder fine enough to liberate the valuable minerals contained therein. The ground ore has a product particle size specification that is set by the downstream separation unit. A ROM ore milling circuit typically consists of a mill, sump and classifier (most commonly a hydrocyclone). These circuits are difficult to control because of unmeasurable process outputs, non-linearities, time delays, large unmeasured disturbances and complex models with modelling uncertainties. The ROM o

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