TY - JOUR 
A1 - Toro Villarroel, Norman Rodrigo
AU - Saldaña Pino, Manuel
AU - Gálvez Ahumada, Edelmira
AU - Cánovas Vidal, Manuel
AU - Trigueros Tornero, Emilio
AU - Castillo Segura, Jonathan Alejandro
AU - Hernández Avendaño, Pia Carolina Andrea
T1 - Optimization of parameters for the dissolution of Mn from manganese nodules with the use of tailings in an acid medium
Y1 - 2019
SN - 2075-163X
UR - http://hdl.handle.net/10317/8509
AB - Manganese nodules are an attractive source of base metals and critical and rare elements and are required to meet a high demand of today’s industry. In previous studies, it has been shown that high concentrations of reducing agent (Fe) in the system are beneficial for the rapid extraction of manganese. However, it is necessary to optimize the operational parameters in order to maximize Mn recovery. In this study, a statistical analysis was carried out using factorial experimental design for the main parameters, including time, MnO2/Fe2O3 ratio, and H2SO4 concentration. After this, Mn recovery tests were carried out over time at di_erent ratios of MnO2/Fe2O3 and H2SO4 concentrations, where the potential and pH of the system were measured. Finally, it is concluded that high concentrations of FeSO4 in the system allow operating in potential and pH ranges (􀀀0.2 to 1.2 V and 􀀀1.8 to 0.1) that favor the formation of Fe2+ and Fe3+, which enable high extractions of Mn (73%) in short periods of time (5 to 20 min) operating with an optimum MnO2/Fe2O3 ratio of 1:3 and a concentration of 0.1 mol/L of H2SO4.
KW - Explotación de Minas
KW - Leaching
KW - Manganese nodules
KW - Optimization of parameters
KW - Tailings
KW - 2506.10 Yacimientos Minerales
KW - 5312.09 Minería
LA - eng
PB - MDPI AG
ER -