Characteristics of ultra-fine particles formation in the silica particle spheroidization using methane/oxygen coaxial non-premixed flame

Particle spheroidization with flame is an effective procedure to produce spheroidized particles. Ultra-fine particles are formed and attached on the surface of spheroidized particles. Since those ultra-fine particles may affect the fluidity and filling fraction of spheroidized particles, a controlla...

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Main Authors: Jun HAYASHI, Singo SUZUKI, Fumiteru AKAMATSU, Yoshiyuki HAGIWARA, Kimio IINO
Format: Article
Language:Japanese
Published: The Japan Society of Mechanical Engineers 2015-01-01
Series:Nihon Kikai Gakkai ronbunshu
Subjects:
Online Access:https://www.jstage.jst.go.jp/article/transjsme/81/822/81_14-00417/_pdf/-char/en
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author Jun HAYASHI
Singo SUZUKI
Fumiteru AKAMATSU
Yoshiyuki HAGIWARA
Kimio IINO
author_facet Jun HAYASHI
Singo SUZUKI
Fumiteru AKAMATSU
Yoshiyuki HAGIWARA
Kimio IINO
author_sort Jun HAYASHI
collection DOAJ
description Particle spheroidization with flame is an effective procedure to produce spheroidized particles. Ultra-fine particles are formed and attached on the surface of spheroidized particles. Since those ultra-fine particles may affect the fluidity and filling fraction of spheroidized particles, a controllability of the ultra-fine particles formation on the spheroidized particles is important. To understand the effects of pressure and the component of fuel on the spheroidization and formation of ultra-fine particles, the particle spherodization tests of SiO2 using non-premixed flame were carried out under elevated pressure. In this study, SEM photographs, particle size distribution and the specific surface area were measured with BET method for evaluating the effects of pressure on particle spheroidization and ultra-fine particles. Results showed that the ultra-fine particles attached on the spheroidized particles were reduced with increasing pressure of the combustion field. This is because that the forming reaction of SiO2 is inhibited with the decrease of molar fractions of carbon monoxide and hydrogen with increasing pressure. In addition, it is found that the ultra-fine particles can be formed where there is carbon monoxide molecular and high temperature at the same time.
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spelling doaj.art-ea580ef9eafd49c3b24155fa342b1d142022-12-22T03:39:13ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612015-01-018182214-0041714-0041710.1299/transjsme.14-00417transjsmeCharacteristics of ultra-fine particles formation in the silica particle spheroidization using methane/oxygen coaxial non-premixed flameJun HAYASHI0Singo SUZUKI1Fumiteru AKAMATSU2Yoshiyuki HAGIWARA3Kimio IINO4Department of Mechanical Engineering, Graduate School of Engineering, Osaka UniversityDepartment of Mechanical Engineering, Graduate School of Engineering, Osaka UniversityDepartment of Mechanical Engineering, Graduate School of Engineering, Osaka UniversityTaiyo Nippon Sanso CorporationTaiyo Nippon Sanso CorporationParticle spheroidization with flame is an effective procedure to produce spheroidized particles. Ultra-fine particles are formed and attached on the surface of spheroidized particles. Since those ultra-fine particles may affect the fluidity and filling fraction of spheroidized particles, a controllability of the ultra-fine particles formation on the spheroidized particles is important. To understand the effects of pressure and the component of fuel on the spheroidization and formation of ultra-fine particles, the particle spherodization tests of SiO2 using non-premixed flame were carried out under elevated pressure. In this study, SEM photographs, particle size distribution and the specific surface area were measured with BET method for evaluating the effects of pressure on particle spheroidization and ultra-fine particles. Results showed that the ultra-fine particles attached on the spheroidized particles were reduced with increasing pressure of the combustion field. This is because that the forming reaction of SiO2 is inhibited with the decrease of molar fractions of carbon monoxide and hydrogen with increasing pressure. In addition, it is found that the ultra-fine particles can be formed where there is carbon monoxide molecular and high temperature at the same time.https://www.jstage.jst.go.jp/article/transjsme/81/822/81_14-00417/_pdf/-char/enultra-fine particleparticle spheroidizationelevated pressuresilica particlepure-oxygen flame
spellingShingle Jun HAYASHI
Singo SUZUKI
Fumiteru AKAMATSU
Yoshiyuki HAGIWARA
Kimio IINO
Characteristics of ultra-fine particles formation in the silica particle spheroidization using methane/oxygen coaxial non-premixed flame
Nihon Kikai Gakkai ronbunshu
ultra-fine particle
particle spheroidization
elevated pressure
silica particle
pure-oxygen flame
title Characteristics of ultra-fine particles formation in the silica particle spheroidization using methane/oxygen coaxial non-premixed flame
title_full Characteristics of ultra-fine particles formation in the silica particle spheroidization using methane/oxygen coaxial non-premixed flame
title_fullStr Characteristics of ultra-fine particles formation in the silica particle spheroidization using methane/oxygen coaxial non-premixed flame
title_full_unstemmed Characteristics of ultra-fine particles formation in the silica particle spheroidization using methane/oxygen coaxial non-premixed flame
title_short Characteristics of ultra-fine particles formation in the silica particle spheroidization using methane/oxygen coaxial non-premixed flame
title_sort characteristics of ultra fine particles formation in the silica particle spheroidization using methane oxygen coaxial non premixed flame
topic ultra-fine particle
particle spheroidization
elevated pressure
silica particle
pure-oxygen flame
url https://www.jstage.jst.go.jp/article/transjsme/81/822/81_14-00417/_pdf/-char/en
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