Despite recent falls in the international price of gold, its value remains at high levels when co... more Despite recent falls in the international price of gold, its value remains at high levels when compared with those observed a decade ago. Added to this, the demand for this mineral remains constant, so, it is imperative to maximize recovery and/ or reduce the costs and losses in the process. This work presents a technological characterization methodology of gold-bearing ore associated with carbonaceous material through mineral separation, followed by amalgamation and cyanidation of the products obtained and by the use of automated image analysis system (MLA, Mineral Liberation AnalyserFEI) conjugated to scanning electron microscopy for quantitative analysis of gold associations. The aim of this study was to evaluate the forms of gold occurrence and possible loss of gold in the tailings due to preg robbing phenomenon, in order to provide subsidy for delimitation of process alternatives for further research aimed to mitigate the gold losses.
Despite recent falls in the international price of gold, its value remains at high levels when co... more Despite recent falls in the international price of gold, its value remains at high levels when compared with those observed a decade ago. Added to this, the demand for this mineral remains constant, so, it is imperative to maximize recovery and/ or reduce the costs and losses in the process. This work presents a technological characterization methodology of gold-bearing ore associated with carbonaceous material through mineral separation, followed by amalgamation and cyanidation of the products obtained and by the use of automated image analysis system (MLA, Mineral Liberation AnalyserFEI) conjugated to scanning electron microscopy for quantitative analysis of gold associations. The aim of this study was to evaluate the forms of gold occurrence and possible loss of gold in the tailings due to preg robbing phenomenon, in order to provide subsidy for delimitation of process alternatives for further research aimed to mitigate the gold losses.
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Papers by Henrique Kahn