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Simulating particle agglomeration in the flash smelting reaction shaft / D.R. Higgins in Minerals engineering, Vol. 22 N° 14 (Novembre 2009) 

Public ISBD [article]  in Minerals engineering > Vol. 22 N° 14 (Novembre 2009) . - pp. 1251–1265 Titre : Simulating particle agglomeration in the flash smelting reaction shaft Type de document : texte imprimé Auteurs : D.R. Higgins, Auteur ; N.B. Gray, Auteur ; M.R. Davidson, Auteur Année de publication : 2009 Article en page(s) : pp. 1251–1265 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : Agglomeration  Flue  dusts  Pyrometallurgy  Computational  fluid  dynamics  Modelling Résumé : A steady-state, axi-symmetric, numerical model was developed to investigate the agglomeration of molten particles of sulphide ore in the reaction shaft of a flash smelting process used for extracting copper. The turbulent, particle-laden, gas flow was simulated in conjunction with a population balance model to account for agglomeration. The agglomeration was found to depend primarily on the particle to gas mass loading ratio, and the particle size and turbulence intensity at the shaft inlet. Predictions compared well with the limited experimental data in the literature. Increasing the angle at which the flow enters the shaft from the burner was found to increase agglomeration up to a critical angle at which the flow behaviour changes. The results have implications for the control and reduction of dust levels in the waste gas stream. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687509001599 [article] Simulating particle agglomeration in the flash smelting reaction shaft [texte imprimé] / D.R. Higgins, Auteur ; N.B. Gray, Auteur ; M.R. Davidson, Auteur . - 2009 . - pp. 1251–1265. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 22 N° 14 (Novembre 2009) . - pp. 1251–1265 Mots-clés : Agglomeration  Flue  dusts  Pyrometallurgy  Computational  fluid  dynamics  Modelling Résumé : A steady-state, axi-symmetric, numerical model was developed to investigate the agglomeration of molten particles of sulphide ore in the reaction shaft of a flash smelting process used for extracting copper. The turbulent, particle-laden, gas flow was simulated in conjunction with a population balance model to account for agglomeration. The agglomeration was found to depend primarily on the particle to gas mass loading ratio, and the particle size and turbulence intensity at the shaft inlet. Predictions compared well with the limited experimental data in the literature. Increasing the angle at which the flow enters the shaft from the burner was found to increase agglomeration up to a critical angle at which the flow behaviour changes. The results have implications for the control and reduction of dust levels in the waste gas stream. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687509001599