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Enhancement of the flotation deinking selectivity by natural polymeric dispersants / Elisa Zeno in Industrial & engineering chemistry research, Vol. 49 N° 19 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9322-9329 Titre : Enhancement of the flotation deinking selectivity by natural polymeric dispersants Type de document : texte imprimé Auteurs : Elisa Zeno, Auteur ; Patrick Huber, Auteur ; Xavier Rousset, Auteur Année de publication : 2010 Article en page(s) : pp. 9322-9329 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Dispersant  Deinking  Flotation Résumé : The impact of natural polymeric dispersants, that is, carboxymethyl cellulose and guar gum, on the flotation selectivity was investigated on a flotation deinking pilot plant. Their effect on pulp flocculation, air bubble size, and gas hold-up was determined by implementing a fiber flocculation sensor, an automated bubble measurement device, and a gas hold-up sensor on the pilot cell. Dispersants reduced pulp flocculation and induced an increase in gas hold-up and a slight decrease in the air bubble size. Their addition promoted ink removal and, at the same time, depressed fiber entrainment and mineral fillers flotation, thus increasing exceptionally the flotation selectivity. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23289666 [article] Enhancement of the flotation deinking selectivity by natural polymeric dispersants [texte imprimé] / Elisa Zeno, Auteur ; Patrick Huber, Auteur ; Xavier Rousset, Auteur . - 2010 . - pp. 9322-9329. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9322-9329 Mots-clés : Dispersant  Deinking  Flotation Résumé : The impact of natural polymeric dispersants, that is, carboxymethyl cellulose and guar gum, on the flotation selectivity was investigated on a flotation deinking pilot plant. Their effect on pulp flocculation, air bubble size, and gas hold-up was determined by implementing a fiber flocculation sensor, an automated bubble measurement device, and a gas hold-up sensor on the pilot cell. Dispersants reduced pulp flocculation and induced an increase in gas hold-up and a slight decrease in the air bubble size. Their addition promoted ink removal and, at the same time, depressed fiber entrainment and mineral fillers flotation, thus increasing exceptionally the flotation selectivity. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23289666