Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52920#.VKydcsnQrzE Author(s) Marcelo Rodrigues do Nascimento 1* , Artur M. G. Lourenço 2 Affiliation(s) 1 Instituto Federal de Educação, Ciência e Tecnologia da Paraíba, Laboratório de Flotação, Campina Grande, Brazil . 2 Universidade Federal de Campina Grande, Programa de Pós-Graduação em Engenharia Civil, Campina Grande, Brazil . ABSTRACT One of the most important problems facing the gold industry is that the placer and free milling gold ores are almost terminating. Hence, the use of refractory ores has been increased during the recent years. In general, gold refractory ores occurs in various types of deposits associated with a range of minerals. Among the refractory ores, the sulfide type is the most common. The methodology employed in the mining process depends on the mode of occurrence of the ore and on the particle size, shape and degree of pu...
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