JMMCE  Vol.2 No.1 , January 2014
Mineralogical Characterization of Sieved and Un-Sieved Samples
ABSTRACT
Mineralogical characterization applied to mineral processing is now widespread. The first step for a mineralogi- cal characterization study is usually size fractionation. Preparation of polished sections is done on size fractions to reduce complications in making representative cross sections of particles with large size differences. A sample is commonly fractionated into five or six size intervals. The drawback of this procedure is that it makes liberation studies more expensive, because one sample actually produces five or six sub-samples that need to be studied, i.e. one from each size interval. Thus to reduce cost of liberation studies, it would be desirable to study the un-sized sample. This paper provides a comparative liberation study of a set of samples both using size fractions and using the un-sized samples. The samples studied are the feed, the concentrate and the tails of a lead rougher flotation circuit. The results consistently show significant differences between the sized and the un-sized samples. Nevertheless, the results indicate that un-corrected liberation data from un-sized samples can be used for comparative studies that involve several related samples. Thus, it is possible to improve (or further understand) a concentrator circuit by using mineralogical data from un-sized samples around such circuit.

Cite this paper
Lastra, R. and Petruk, W. (2014) Mineralogical Characterization of Sieved and Un-Sieved Samples. Journal of Minerals and Materials Characterization and Engineering, 2, 40-48. doi: 10.4236/jmmce.2014.21007.
References
[1]   A. M. Gaudin, “Principles of Mineral Dressing,” McGarw-Hill Book Company, New York, 1932, 554p.

[2]   W. Petruk, “The Capabilities of the Microprobe Kontron Image Analysis System: Application to Mineral Beneficiation,” Scanning Microscopy, Vol. 2, No. 3, 1988, pp. 1247-1256.

[3]   W. Petruk and R. Lastra, “Mineralogical and Image Analysis Study of Samples from the Pb-Cu Circuit of Brunswick Mining and Smelting,” CANMET Mining Division Report 95-10 (CR), CANMET Mining, Ottawa 1995.

[4]   D. Leroux, M. Cooper and W. Petruk, “Mineral Liberation Analysis of Brunswick CuPb Rougher Flotation Systems,” 28th Annual Meeting of the Canadian Mineral Processors, Ottawa, January 1996, pp. 494-506.

[5]   R. Lastra, “Seven Practical Application Cases of Liberation Analysis,” International Journal of Mineral Processing, Vol. 84, No. 1-4, 2007, pp. 337-347. http://dx.doi.org/10.1016/j.minpro.2006.07.017

[6]   W. Petruk, “Applied Mineralogy in the Mining Industry,” Elsevier, Amsterdam, 2000, pp. 64-66.

[7]   C. J. Stanley and J. H. G. Laflamme, “Preparation of Specimens for Advanced Ore-Mineral and Environmental Studies,” In: J. L. Jambor, L. J. Cabri and D. J. Vaughan, Eds., Modern Approaches to Ore and Environmental Mineralogy, Short Course Series Volume 27, The Mineralogical Association of Canada, Ottawa, 1998.

[8]   R. Lastra, W. Petruk and J. Wilson, “Image Analysis Techniques and Applications to Mineral Processing,” In: J. L. Jambor, L. J. Cabri and D. J. Vaughan, Eds., Modern Approaches to Ore and Environmental Mineralogy, Short Course Series Volume 27, The Mineralogical Association of Canada, Ottawa, 1998.

 
 
Top