TY - JOUR 
A1 - Torres Albornoz, David Antonio
AU - Ayala Alcázar, Luis
AU - Saldaña Pino, Manuel
AU - Cánovas Vidal, Manuel
AU - Jeldres Valenzuela, Ricardo Iván
AU - Nieto Mejía, Steven
AU - Castillo Segura, Jonathan Alejandro
AU - Robles Vásquez, Pedro Adrián
AU - Toro Villarroel, Norman Rodrigo
T1 - Leaching manganese nodules in an acid medium and room temperature comparing the use of different Fe reducing agent
Y1 - 2019
SN - 2075-4701
UR - http://hdl.handle.net/10317/9274
AB - The deposits of Fe-Mn, in the seabed of the planet, are a good alternative source for the extraction of elements of interest. Among these are marine nodules, which have approximately 24% manganese and may be a solution to the shortage of high-grade ores on the surface. In this investigation, an ANOVA analysis was performed to evaluate the time independent variables and MnO2/reducing agent in the leaching of manganese nodules with the use of different Fe reducing agents (FeS2, Fe2+, Fe-0 and Fe2O3). Tests were also carried out for the different reducing agents evaluating the MnO2/Fe ratio, in which the Fe-0 (FeC) proved to be the best reducing agent for the dissolution of Mn from marine nodules, achieving solutions of 97% in 20 min. In addition, it was discovered that at low MnO2/Fe ratios the acid concentration in the system is not very relevant and the potential and pH were in ranges of -0.4-1.4 V and -2-0.1 favoring the dissolution of Mn from MnO2.
KW - Ciencia de los Materiales e Ingeniería Metalúrgica
KW - MnO2
KW - Acid media
KW - ANOVA
KW - Dissolution
KW - 3312 Tecnología de Materiales
LA - eng
PB - MDPI
ER -