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Packing of particles on the surface of bubbles / G. Bournival in Minerals engineering, Vol. 23 N° 2 (Janvier 2010) 

Public ISBD [article]  in Minerals engineering > Vol. 23 N° 2 (Janvier 2010) . - pp. 111-116 Titre : Packing of particles on the surface of bubbles Type de document : texte imprimé Auteurs : G. Bournival, Auteur ; S. Ata, Auteur Article en page(s) : pp. 111-116 Note générale : Génie Minier Métallurgie Langues : Anglais (eng) Mots-clés : Mineral  processing  Froth  flotation  Flotation  froths  Particle  size Index. décimale : 622 Industrie minière Résumé : In this paper, geometrical packing models were derived to determine the coverage of particles on an air bubble. Nearly spherical glass beads of two size fractions and galena particles were used in the study. The coverage of air bubbles by glass beads was carried out in the concentration range 2.74 × 10−5–1.65 × 10−3 mM of CTAB. The results indicated that coverage at all concentrations could be approximated with a hexagonal model with monodispersed particles using the value of d[4,3]. This could be done with a relative deviation of the packing factor within 15%. The coverage of an air bubble by galena particles was carried out in a collectorless environment. The best models were found to be a hexagonal or square cell using the value of d[1,0]. Experimental observations on particle packing are given and implications for the froth phase of flotation are discussed. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VDR-4XDKC9K-1&_user=6 [...] [article] Packing of particles on the surface of bubbles [texte imprimé] / G. Bournival, Auteur ; S. Ata, Auteur . - pp. 111-116. Génie Minier Métallurgie Langues : Anglais (eng) in Minerals engineering > Vol. 23 N° 2 (Janvier 2010) . - pp. 111-116 Mots-clés : Mineral  processing  Froth  flotation  Flotation  froths  Particle  size Index. décimale : 622 Industrie minière Résumé : In this paper, geometrical packing models were derived to determine the coverage of particles on an air bubble. Nearly spherical glass beads of two size fractions and galena particles were used in the study. The coverage of air bubbles by glass beads was carried out in the concentration range 2.74 × 10−5–1.65 × 10−3 mM of CTAB. The results indicated that coverage at all concentrations could be approximated with a hexagonal model with monodispersed particles using the value of d[4,3]. This could be done with a relative deviation of the packing factor within 15%. The coverage of an air bubble by galena particles was carried out in a collectorless environment. The best models were found to be a hexagonal or square cell using the value of d[1,0]. Experimental observations on particle packing are given and implications for the froth phase of flotation are discussed. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VDR-4XDKC9K-1&_user=6 [...]