|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials 2021
||Surface Speciation by FTIR Spectroscopy of Floated PbS (Galena) in the Presence of Cu2+
||Jimena Detzamin Ramírez Trejo, Martín Reyes Perez, Elia Guadalupe Palacios Beas, Iván Alejandro Reyes Domínguez, Mizraim Uriel Flores Guerrero, Aislinn Michelle Teja Ruiz, Miguel Pérez Labra, Julio Cesar Juárez Tapia
|On-Site Speaker (Planned)
||Martín Reyes Perez
The presence of copper Cu2+ in the pulps that feed the flotation circuits is due to the oxidation of the copper contained in sulfides (chalcopyrite) and in oxides (malachite) as a result of the galvanic reactions that occur during grinding, Cu2+ can have a negative effect during the collectorless flotation of galena. In this investigation, the galena concentrated by collectorless flotation and in the presence of Cu2+ in alkaline media was superficially characterized by infrared spectroscopy. The results show, the depression of galena with the increase of the concentration of copper in the pulp, at pH 9.6 and Eh of +120 (mV). From the infrared characterization, it was found that the surface state of the galena when it undergoes depression, shows the absence of some of the absorption bands corresponding to the Pb-O and Pb-OH bonds of lead oxide and hydroxide detected when galena flotation reaches maximum recovery.