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Preparation of spherical ammonium nitrate particles by melt spray / Jae-Kyeong Kim in Industrial & engineering chemistry research, Vol. 49 N° 24 (Décembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp. 12632-12637 Titre : Preparation of spherical ammonium nitrate particles by melt spray Type de document : texte imprimé Auteurs : Jae-Kyeong Kim, Auteur ; Seung-Il Choi, Auteur ; Eui Jung Kim, Auteur Année de publication : 2011 Article en page(s) : pp. 12632-12637 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Preparation  Spherical  ammonium Résumé : Spherical ammonium nitrate particles with average diameters of 82-206 μm were produced using the mel spray system built in the present work. The effects of spray pressure and temperature on the size distribution and average diameter of the ammonium nitrate particles were investigated. It was found that increasing the spray pressure at given temperature or increasing the temperature at given pressure enhanced the disintegration of the front edge of the liquid sheet into fine droplets and, thus, slightly reduced the average diameter of the ammonium nitrate particles. X-ray diffraction patterns confirmed all spherical ammonium nitrate particles to be form IV because of a rapid phase transition from form I to form IV. Dombrowski and Johns' equation which is applicable to highly viscous spray fluids, was found to be satisfactory for estimating the Saute diameter of the ammonium nitrate particles. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23692019 [article] Preparation of spherical ammonium nitrate particles by melt spray [texte imprimé] / Jae-Kyeong Kim, Auteur ; Seung-Il Choi, Auteur ; Eui Jung Kim, Auteur . - 2011 . - pp. 12632-12637. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp. 12632-12637 Mots-clés : Preparation  Spherical  ammonium Résumé : Spherical ammonium nitrate particles with average diameters of 82-206 μm were produced using the mel spray system built in the present work. The effects of spray pressure and temperature on the size distribution and average diameter of the ammonium nitrate particles were investigated. It was found that increasing the spray pressure at given temperature or increasing the temperature at given pressure enhanced the disintegration of the front edge of the liquid sheet into fine droplets and, thus, slightly reduced the average diameter of the ammonium nitrate particles. X-ray diffraction patterns confirmed all spherical ammonium nitrate particles to be form IV because of a rapid phase transition from form I to form IV. Dombrowski and Johns' equation which is applicable to highly viscous spray fluids, was found to be satisfactory for estimating the Saute diameter of the ammonium nitrate particles. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23692019