An experimental verification of particle flow ratio of high gradient magnetic separation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F16%3A86099568" target="_blank" >RIV/61989100:27350/16:86099568 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27360/16:86099568 RIV/61989100:27740/16:86099568 RIV/61989100:27760/16:86099568

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

An experimental verification of particle flow ratio of high gradient magnetic separation

Popis výsledku v původním jazyce

The paper presents an experimental verification of magnetic separation particle flow ratio using the theoretical model. Steady state, laminar flow and a spherical magnetic particle (paramagnetic or weakly ferromagnetic) was assumed in the model. The magnetic behavior of the liquid and influence of the steel wool is neglected. From the mathematical model we have estimated that separation particle flow ratio is proportional to the square of the particle radius, inversely proportional to the velocity of the particles in liquid and directly proportional to the magnitude and the gradient of the magnetic field. The experimental verification was carried out using two new laboratory magnetic separators constructed at the Department of Physics, VŠB-Technical University of Ostrava. These separators are mounted with two or four NdFeB permanent magnets symmetrically around a central separation cell. High magnetic field gradient (HMFG) inside of the separation cell is created using steel wool. Separation processes using both separators were the following: prepared suspension was brought into the separator using the peristaltic pump after its homogenization by ultrasound in ultrasonic cleaner. The suspension further continued through the separation cell filled with steel wool to the collection vessel, where the separation process finished. In our case, the separation process for each sample underwent five cycles. The particle flow ratio of the high gradient magnetic separation (HGMS) process was tested on a water suspension containing weakly magnetic Fe2O3 nano/micro-particles by the turbidimetry, i.e., measurement of intensity of scattered light. Three grain size fractions were prepared-coarse, medium and fine, mean particle size about 5μm, 1.4μ m and 100 nm, respectively. (C) 2016 American Scientific Publishers All rights reserved.

Název v anglickém jazyce

An experimental verification of particle flow ratio of high gradient magnetic separation

Popis výsledku anglicky

The paper presents an experimental verification of magnetic separation particle flow ratio using the theoretical model. Steady state, laminar flow and a spherical magnetic particle (paramagnetic or weakly ferromagnetic) was assumed in the model. The magnetic behavior of the liquid and influence of the steel wool is neglected. From the mathematical model we have estimated that separation particle flow ratio is proportional to the square of the particle radius, inversely proportional to the velocity of the particles in liquid and directly proportional to the magnitude and the gradient of the magnetic field. The experimental verification was carried out using two new laboratory magnetic separators constructed at the Department of Physics, VŠB-Technical University of Ostrava. These separators are mounted with two or four NdFeB permanent magnets symmetrically around a central separation cell. High magnetic field gradient (HMFG) inside of the separation cell is created using steel wool. Separation processes using both separators were the following: prepared suspension was brought into the separator using the peristaltic pump after its homogenization by ultrasound in ultrasonic cleaner. The suspension further continued through the separation cell filled with steel wool to the collection vessel, where the separation process finished. In our case, the separation process for each sample underwent five cycles. The particle flow ratio of the high gradient magnetic separation (HGMS) process was tested on a water suspension containing weakly magnetic Fe2O3 nano/micro-particles by the turbidimetry, i.e., measurement of intensity of scattered light. Three grain size fractions were prepared-coarse, medium and fine, mean particle size about 5μm, 1.4μ m and 100 nm, respectively. (C) 2016 American Scientific Publishers All rights reserved.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/LO1203" target="_blank" >LO1203: Regionální materiálově technologické výzkumné centrum - Program udržitelnosti</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Advanced Science Letters

ISSN

1936-6612

e-ISSN

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Svazek periodika

22

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

611-615

Kód UT WoS článku

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EID výsledku v databázi Scopus

2-s2.0-84985897933