Introduction to the stirred milling of nickel laterites for upgrading nickel

CIM Journal, Vol. 6, No. 1, 2015

L. Tong and B. Klein
Norman B. Keevil Institute of Mining Engineering, University of British Columbia, Vancouver, British Columbia, Canada

M. Zanin, W. Skinner, K. Quast, and J. Addai-Mensah
Ian Wark Research Institute, University of South Australia, Mawson Lakes, Adelaide, South Australia, Australia

D. Robinson
Minerals Down Under National Research Flagship, CSIRO Process Science and Engineering, Waterford, Western Australia, Australia

http://dx.doi.org/10.15834/cimj.2015.3
Résumé Le broyage par billes de latérites comportant du nickel offre des possibilités d’amélioration de la libération et de la réduction sélective de la taille des minéraux nickélifères tendres dans les latérites. Des essais de broyage en vrac ont été effectués dans un broyeur à billes netzschMD lME4 sur des latérites nickélifères à goethite siliceuse, à goethite et saprolitiques. Des essais sur l’échantillon −2000 μm présentaient des effets d’une comminution sélective. le produit −38 μm de l’alimentation −2000/+38 μm confirme les effets d’un broyage sélectif et du rehaussement de la teneur en nickel. Pour améliorer la teneur en nickel, il est recommandé de classifier le minerai en fonction de sa granulométrie, puis d’effectuer un broyage à billes. l’énergie requise pour le broyage à billes a aussi été étudié.
Mots clés : Broyage, comminution, latérite nickélifère, traitement des minerais
Accés complet à Document technique
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