Hydrocyclone
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Performance analysis of the beneficiation process of bauxite from the Juruti Mine. Industrial sampling and performance evaluation
Abstract Sampling campaigns were conducted at the industrial bauxite wash circuit of the Juruti Bauxite Mine in Pará, Brazil. The beneficiation circuit consisted of crushing, scrubber washing, wet screening, hydrocyclone classification, and fltration. Considering laboratory processing of samples and statistical analyses of historical operation databases, ma
REM - International Engineering Journal. Publicado em: 2022
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2. A NEW COMPUTATIONAL FLUID DYNAMICS STUDY OF A LIQUID-LIQUID HYDROCYCLONE IN THE TWO PHASE CASE FOR SEPARATION OF OIL DROPLETS AND WATER
Abstract A liquid-liquid hydrocyclone, so-called de-oiling equipment, was investigated for separation of oil droplets and wastewater in an Iranian petroleum unit. To generate the geometry and the mesh of the hydrocyclone Gambit software was used. Afterwards, by taking advantage of the Euler-Lagrangian principle, the governing equations covering the motion of
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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3. Evaluation of grinding circuits for iron ore
Abstract Grinding has become one of the most important unitary operations for producing pellet feed for direct reduction from low-grade ores and small liberation size, such as compact itabirites. The aim of this study was to evaluate and compare two grinding circuits in an industrial iron ore plant, by evaluating the current operation through sampling, indus
REM, Int. Eng. J.. Publicado em: 2019-03
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4. Comparative evaluation between mechanical and pneumatic cells for quartz flotation in the iron ore industry
Abstract Flotation plays a relevant role in the concentration of iron ores. Conventional flotation technology employing mechanical machines and columns and also circuits combining both types of cells have been utilized in the iron ore industry. The top size of particles in the flotation circuit feed is 150 µm and the slimes below 10 µm are removed as overf
REM, Int. Eng. J.. Publicado em: 2018-07
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5. Evaluation of mass transfer in a novel hollow fiber module design using an electrochemical technique
Abstract The mass transfer coefficient (K L ) determined using an electrochemical technique was used in this work as a parameter to evaluate the hydrodynamics of hollow fiber membrane modules. A new microfiltration module configuration was investigated, taking advantage of the hydrocyclone concept aimed at reducing the concentration of the polarization laye
Braz. J. Chem. Eng.. Publicado em: 2017-07
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6. An investigation of the behavior of a classifying hydrocyclone with pseudoplastic fluids
The procedure usually employed for specifying a set of hydrocyclones used in Newtonian fluid-solid separation processes can be extended to the case of non-Newtonian fluids. The apparent viscosity, µapp, is the link between the two cases, and can be evaluated from the knowledge of the shear stress function, S, and the characteristic rate of shear, λ*. In or
Braz. J. Chem. Eng.. Publicado em: 2013-12
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7. Otimização da separação sólido-líquido em hidrociclones mediante modificações geométricas
Because of advantages such as low cost, simple structure, large capacity of suspension processing and small dimensions, hydrocyclones are widely used for separating dispersed phase (liquid or solids) from continuous one. The shape and size of a hydrocyclone has a decisive effect on the internal flow structure of the continuous phase, and therefore, the separ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/11/2012
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8. MODELAGEM E SIMULAÇÃO DO TRATAMENTO DE ÁGUA OLEOSA USANDO HIDROCICLONES. / MODELING AND SIMULATION OF OILY WATER TREATMENT USING HYDROCYCLONES.
O aumento da poluição industrial tem levado os órgãos de controle ambiental a rever a legislação em vigor e a limitar de forma mais rigorosa o descarte de efluentes industriais. Em contrapartida, as empresas têm melhorado os sistemas de tratamento de seus efluentes, aplicando novas tecnologias. Na indústria de petróleo, na separação óleo-água, s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/02/2012
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9. Concentração de leveduras da fermentação alcoólica em hidrociclones
No processo de fermentação para produção de etanol, as leveduras de Saccharomyces cerevisiae são recuperadas e recicladas para uma nova etapa de fermentação. Este processo de separação representa um grande desafio, pois as leveduras são pequenas e com baixa densidade. Para tal finalidade, o hidrociclone surge como uma alternativa interessante pois,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/07/2011
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10. Influence of geometric dimensions on the performance of a filtering hydrocyclone: an experimental and cfd study
Filtering hydrocyclone is a device that was developed and patented by the Particulate System Research Group at the Federal University of Uberlandia. This equipment consists of a hydrocyclone whose conical section is replaced by a conical filtering wall. Thus, during the operation of these devices, besides the underflow and overflow streams, there is another
Brazilian Journal of Chemical Engineering. Publicado em: 2009-09
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11. Desenvolvimento de modelo computacional de previsão de quebra de gotas em simulador de separação de óleo e água em um hidrociclone / Development of computational model of forecast of drops break in simulator of separation of oil and water in a hydrocyclone
The present work approaches aspects of oily water treatment, by using hydrocyclones, in a petroleum primary processing plant. It shows the hydrocyclone, its utilization in the petroleum industry and the flow phenomena occurring within it. Starting from the mass conservation and linear momentum conservation equations, assuming some hypothesis, one writes a di
Publicado em: 2008
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12. Comportamento do hidrociclone filtrante frente às modificações no diâmetro de underflow e no tubo de vortex finder
Filtering hydrocyclones are similar equipaments to the conventional hydrocyclone except by the fact they have filtering conical region. In this way, during the operation of this equipament, besides the feed streams, the underflow and the overflow, observed commonly, the porous conical region produces liquid by the filtration process. The filtration in the co
Publicado em: 2008