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Published in:
2023 | OriginalPaper | Chapter
Characterization of Flotation and Leaching in Cyanide and Thiourea Medium of a Gold, Silver, and Copper Ore
Authors : Martín Reyes Pérez, Iván. A. Reyes Domínguez, Mizraim U. Flores Guerrero, Elia Palacios Beas, Julio Cesar Juárez Tapia, Miguel Pérez Labra, Francisco Raúl Barrientos Hernández, Aislinn Michelle Teja Ruiz, Ian Medina Estrada
Published in: Characterization of Minerals, Metals, and Materials 2023
Publisher: Springer Nature Switzerland
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Abstract
High-grade gold ores are generally associated with iron, copper, and silver sulfides, among other species that during dissolution consume the leaching agent, causing a decrease in the leaching rate. In this work, the flotation, and the comparison of the leaching with cyanide and thiourea (TU) of an ore rich in Au, Ag, and Cu were studied. The flotation was carried out with 100 and 200 mesh particles at pH 6.53, and Eh of 253 mV, and frother MIBC and xanthate 60 and 100 mg/l, respectively. The concentrate was leached with 0.2 M thiourea at pH 1.5 and separately with 2000 PPM-free cyanide at pH 11.1. In the system containing cyanide, 19.7%, 22.8%, and 15.4% of Au, Ag, and Cu of recovery were obtained, respectively, while in the system with only TU 14.36%, 15.75%, and 10.75% extraction.