Geometallurgical study of gold beneficiation at a mineral deposit in the Eastern Cordillera of the Colombian Andes
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Abstract
The geometallurgical study of a polymetallic mineral deposit located in the vicinity of the municipality of California Department of Santander was carried out. In the associated metallurgical study, the estimated models showed a low average variability, which indicates that geometallurgical units are not defined; this happens, because the zone presents a geological formation with hydrothermal breaches on which mineralization is lodged to a greater degree associated with sulfides. Likewise, the Gaussian model of SGeMS software yields estimated laws of 3.126 ppm for Au, 11.5 ppm of Ag and 970.53 ppm for Cu. During the study of mechanical behavior, a work index of 19.8 kWh/T was determined, said hardness is derived from the high content of the siliceous rock present in the box mineral; likewise, the calculated grinding time is 20 minutes. The analysis of thin films allows us to characterize the gold present, which is encapsulated inside pyrite and bornite, at sizes from 2 to 7 microns, which corresponds to concentration by selective or differential flotation circuits to obtain two concentrates, one of pyrite and the other of Cu.
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