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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Format: | Article |
Language: | Japanese |
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The Japan Society of Mechanical Engineers
2015-01-01
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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. |
first_indexed | 2024-04-12T09:02:06Z |
format | Article |
id | doaj.art-ea580ef9eafd49c3b24155fa342b1d14 |
institution | Directory Open Access Journal |
issn | 2187-9761 |
language | Japanese |
last_indexed | 2024-04-12T09:02:06Z |
publishDate | 2015-01-01 |
publisher | The Japan Society of Mechanical Engineers |
record_format | Article |
series | Nihon Kikai Gakkai ronbunshu |
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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