Abstract

YANEZ TRASLAVINA, J. J.; GARCIA PAEZ, I. H.; PEDRAZA ROSAS, J. E.  and  LAVERDE CATANO, D.. CHARACTERIZATION OF AURIFEROUS ORES FROM THE MINING ZONE OF SAN PEDRO FRIO (BOLIVAR- COLOMBIA) TO SELECTION THE EXTRACTIVE PROCESSES. Dyna rev.fac.nac.minas [online]. 2005, vol.72, n.145, pp.23-35. ISSN 0012-7353.

The benefit and treatment process of auriferous minerals that actuality are apply in San Pedro Frio’s Miner Place, this carry a slightly efficient systems with percentages of gold recovery not bigger than 40 %. The present work is the summary of the results of analysis and characterization of minerals auriferous of the above mentioned mining zone. With this article, one tries to stimulate the miners to realize a development reconciled with the university, since according to the results obtained during this research, it is possible to achieve percentages of gold dissolution of up to 85 % for the minerals of San Pedro Frio. This affirmation was possible to propose it, by means of the analyses of the characterization of the mineral. By means of the physicochemical characterization of the mineral, there was possible the estimation of certain conditions of the metallurgical processes involved in a possible plant of treatment, it is so the percentage of solid more adapted for the managing of the solid ones in flesh was 40 % in weight, the high quantity of clay minerals they might impede the processes of separation solidly - liquid, among others operative specifications According to the mineralogical and metallurgical characterization, the average size of the present gold in the mineral, one finds to a minor grain 75 µm, this indicates that the cyanidation process for agitation would turn out to be the most suitable. The answer of the leaching diagnosis, they assumed very satisfactory results, since 94 % of the gold in the samples is as free gold, which will be able to affect in cyanidation short times.

Keywords : Gold extraction; characterization; cyanidation; leaching diagnostic.

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