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Flotation and surface behavior of cassiterite with salicylhydroxamic acid / Wenqing Qin in Industrial & engineering chemistry research, Vol. 50 N° 18 (Septembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 18 (Septembre 2011) . - pp. 10778-10783 Titre : Flotation and surface behavior of cassiterite with salicylhydroxamic acid Type de document : texte imprimé Auteurs : Wenqing Qin, Auteur ; Yangbao Xu, Auteur ; Hui Liu, Auteur Année de publication : 2011 Article en page(s) : pp. 10778-10783 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Flotation Résumé : The flotation and surface interaction of cassiterite with salicylhydroxamic acid have been investigated in this paper. The results showed that recovery of cassiterite with salicylhydroxamic acid was high at a neutral pH, with the maximum recovery occurring at ca. pH 6.5. When the size of cassiterite is less than 74 μm, coarse particles showed better flotability than the fine ones. The adsorption of salicylhydroxamic acid was also high at a neutral pH. The isoelectric point of cassiterite showed an acidic shift in the presence of salicylhydroxamic acid. A chelate was identified on the cassiterite surface. The results of the adsorption, electrophoretic mobility, and IR spectrum of cassiterite indicated that the adsorption on the cassiterite surface included both physical and chemical adsorption. On the basis of the experimental results, a complex multilayer adsorption model was proposed to illustrate the adsorption on the surface of cassiterite. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24523894 [article] Flotation and surface behavior of cassiterite with salicylhydroxamic acid [texte imprimé] / Wenqing Qin, Auteur ; Yangbao Xu, Auteur ; Hui Liu, Auteur . - 2011 . - pp. 10778-10783. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 18 (Septembre 2011) . - pp. 10778-10783 Mots-clés : Flotation Résumé : The flotation and surface interaction of cassiterite with salicylhydroxamic acid have been investigated in this paper. The results showed that recovery of cassiterite with salicylhydroxamic acid was high at a neutral pH, with the maximum recovery occurring at ca. pH 6.5. When the size of cassiterite is less than 74 μm, coarse particles showed better flotability than the fine ones. The adsorption of salicylhydroxamic acid was also high at a neutral pH. The isoelectric point of cassiterite showed an acidic shift in the presence of salicylhydroxamic acid. A chelate was identified on the cassiterite surface. The results of the adsorption, electrophoretic mobility, and IR spectrum of cassiterite indicated that the adsorption on the cassiterite surface included both physical and chemical adsorption. On the basis of the experimental results, a complex multilayer adsorption model was proposed to illustrate the adsorption on the surface of cassiterite. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24523894