Documents disponibles écrits par cet auteur

Comparison of energy efficiency between ball mills and stirred mills in coarse grinding / Fengnian Shi in Minerals engineering, Vol. 22 N° 7/8 (Juin/Juillet 2009) 

Public ISBD [article]  in Minerals engineering > Vol. 22 N° 7/8 (Juin/Juillet 2009) . - pp. 673–680 Titre : Comparison of energy efficiency between ball mills and stirred mills in coarse grinding Type de document : texte imprimé Auteurs : Fengnian Shi, Auteur ; Rob Morrison, Auteur ; Andrew Cervellin, Auteur Année de publication : 2009 Article en page(s) : pp. 673–680 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : Comminution  Grinding Résumé : Stirred mills are primarily used for fine and ultra-fine grinding. They dominate these grinding applications because greater stress intensity can be delivered in stirred mills and they can achieve better energy efficiency than ball mills in fine and ultra-fine grinding. Investigations were conducted on whether the greater performance of stirred mills over ball mills in fine grinding can be extended to coarse grinding applications. Four different laboratory ball mills and stirred mills have been tested to grind seven ore samples with feed sizes ranging from 3.35 mm to 150 μm. A case study on full scale operations of a 2.6 MW IsaMill replacing the existing 4 MW regrind ball mill at Kumtor Gold Mine in Kyrgyzstan is also included. This paper summarizes the major findings from these investigations. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687508002823 [article] Comparison of energy efficiency between ball mills and stirred mills in coarse grinding [texte imprimé] / Fengnian Shi, Auteur ; Rob Morrison, Auteur ; Andrew Cervellin, Auteur . - 2009 . - pp. 673–680. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 22 N° 7/8 (Juin/Juillet 2009) . - pp. 673–680 Mots-clés : Comminution  Grinding Résumé : Stirred mills are primarily used for fine and ultra-fine grinding. They dominate these grinding applications because greater stress intensity can be delivered in stirred mills and they can achieve better energy efficiency than ball mills in fine and ultra-fine grinding. Investigations were conducted on whether the greater performance of stirred mills over ball mills in fine grinding can be extended to coarse grinding applications. Four different laboratory ball mills and stirred mills have been tested to grind seven ore samples with feed sizes ranging from 3.35 mm to 150 μm. A case study on full scale operations of a 2.6 MW IsaMill replacing the existing 4 MW regrind ball mill at Kumtor Gold Mine in Kyrgyzstan is also included. This paper summarizes the major findings from these investigations. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687508002823

A more sustainable approach to assessing comminution efficiency / Fiesal Musa in Minerals engineering, Vol. 22 N° 7/8 (Juin/Juillet 2009) 

Public ISBD [article]  in Minerals engineering > Vol. 22 N° 7/8 (Juin/Juillet 2009) . - pp. 593–601 Titre : A more sustainable approach to assessing comminution efficiency Type de document : texte imprimé Auteurs : Fiesal Musa, Auteur ; Rob Morrison, Auteur Année de publication : 2009 Article en page(s) : pp. 593–601 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : Mineral  processing  Comminution  Crushing  Grinding Résumé : The Bond operating work index is in common use for assessment of comminution efficiency. This method was developed for rod and grinding ball mill circuits and is not well suited to AG/SAG mills or the wide range of comminution devices now in common use. Traditional measures of efficiency only consider the net motor power of the drive unit. However, ancillary processes such as materials handling and classification can consume a substantial fraction of motor power. Wear resistant liners and grinding media are also consumed by the comminution process. These consumables themselves require substantial energy to mine, refine and to manufacture. This embedded (or indirect) energy can be of similar order to motor power. This paper outlines several ways to estimate of comminution efficiency. These methods can be applied to a wide range of equipment. The paper also describes how to estimate indirect energy consumption. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687509001095 [article] A more sustainable approach to assessing comminution efficiency [texte imprimé] / Fiesal Musa, Auteur ; Rob Morrison, Auteur . - 2009 . - pp. 593–601. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 22 N° 7/8 (Juin/Juillet 2009) . - pp. 593–601 Mots-clés : Mineral  processing  Comminution  Crushing  Grinding Résumé : The Bond operating work index is in common use for assessment of comminution efficiency. This method was developed for rod and grinding ball mill circuits and is not well suited to AG/SAG mills or the wide range of comminution devices now in common use. Traditional measures of efficiency only consider the net motor power of the drive unit. However, ancillary processes such as materials handling and classification can consume a substantial fraction of motor power. Wear resistant liners and grinding media are also consumed by the comminution process. These consumables themselves require substantial energy to mine, refine and to manufacture. This embedded (or indirect) energy can be of similar order to motor power. This paper outlines several ways to estimate of comminution efficiency. These methods can be applied to a wide range of equipment. The paper also describes how to estimate indirect energy consumption. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687509001095