A comparison of 2D and 3D shape characterisations of free gold particles in gravity and flash flotation concentrates
作者： T.D.H. McGrath , L. O’Connor , J.J. Eksteen
DOI: 10.1016/J.MINENG.2015.04.022
关键词: Particle 、 Sphericity 、 Flash (manufacturing) 、 Gravity (chemistry) 、 Mineralogy 、 Mechanics 、 Froth flotation 、 Materials science 、 Gold particles
摘要: Abstract The focus of this study was to characterise and quantify the nature free gold particles recovered in a plant setting featuring parallel gravity concentration flash flotation processes, with an emphasis on influence size shape as review literature suggests importance such attributes particle’s recovery behaviour. Automated mineralogical analysis (AMA) employed particles’ circularity sphericity measurements using two three dimensional (2D/3D) methods. As expected, 2D results indicated that (−212/+38 μm) reporting concentrate were, average, more circular than those concentrate. However, 3D characterisations same samples offered opposing results. Such conflict identifies limitation for application simple malleable irregularly shaped particles.
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B.S. Aksoy, B. Yarar, Natural hydrophobicity of native gold flakes and their flotation under different conditions Processing of Complex Ores#R##N#Proceedings of the International Symposium on Processing of Complex Ores, Halifax, August 20–24, 1989. pp. 19- 27 ,(1989) , 10.1016/B978-0-08-037283-9.50007-X
Harry A. Tourtelot, Leonard B. Riley, Size and Shape of Gold and Platinum Grains Springer, Berlin, Heidelberg. pp. 307- 319 ,(1973) , 10.1007/978-3-642-65329-2_22
J. Drzymała, V. Vigdergauz, Work and force of Bubble-particle detachment as a measure of contact angle in flotation systems Prace Naukowe Instytutu Górnictwa Politechniki Wrocławskiej. Studia i Materiały. ,vol. 87, ,(2000)
A. Laplante, S. Gray, Advances in gravity gold technology Developments in mineral processing. ,vol. 15, pp. 280- 307 ,(2005) , 10.1016/S0167-4528(05)15013-3
Xian-Ming Zeng, Particulate Analysis - Particle Size Solid State Characterization of Pharmaceuticals. pp. 387- 425 ,(2011) , 10.1002/9780470656792.CH11
M. A. SHOCKLING, J. J. ALLEN, A. J. SMITS, Roughness effects in turbulent pipe flow Journal of Fluid Mechanics. ,vol. 564, pp. 267- 285 ,(2006) , 10.1017/S0022112006001467
G.C. Allan, J.T. Woodcock, A review of the flotation of native gold and electrum Minerals Engineering. ,vol. 14, pp. 931- 962 ,(2001) , 10.1016/S0892-6875(01)00103-0
C. BROOK, G. SMALL, A. MICHELMORE, W. SKINNER, S. GRANO, Collection and characterization of free gold particles from low grade copper concentrator streams and methods to improve their recovery Canadian Metallurgical Quarterly. ,vol. 42, pp. 261- 270 ,(2003) , 10.1179/CMQ.2003.42.3.261
Mahmoud M. Ahmed, Effect of comminution on particle shape and surface roughness and their relation to flotation process International Journal of Mineral Processing. ,vol. 94, pp. 180- 191 ,(2010) , 10.1016/J.MINPRO.2010.02.007