TY - JOUR 
A1 - Toro Villarroel, Norman Rodrigo
AU - Briceño Romero, Williams
AU - Pérez Salinas, Kevin
AU - Cánovas Vidal, Manuel
AU - Trigueros Tornero, Emilio
AU - Sepúlveda Rivera, Rossana
AU - Hernández Avendaño, Pía Carolina Andrea
T1 - Leaching of pure chalcocite in a chloride media using sea water and wastewater
Y1 - 2019
SN - 2075-163X
UR - http://hdl.handle.net/10317/8510
AB - Chalcocite is the most important and abundant secondary copper ore in the world with a rapid dissolution of copper in an acid-chloride environment. In this investigation, the methodology of surface optimization will be applied to evaluate the e_ect of three independent variables (time, concentration of sulfuric acid and chloride concentration) in the leaching of pure chalcocite to extract the copper with the objective of obtaining a quadratic model that allows us to predict the extraction of copper. The kinetics of copper dissolution in regard to the function of temperature is also analyzed. An ANOVA indicates that the linear variables with the greatest influence are time and the chloride concentration. Also, the concentration of chloride-time exerts a significant synergic e_ect in the quadratic model. The ANOVA indicates that the quadratic model is representative and the R2 value of 0.92 is valid. The highest copper extraction (67.75%) was obtained at 48 h leaching under conditions of 2 mol/L H2SO4 and 100 g/L chloride. The XRD analysis shows the formation of a stable and non-polluting residue; such as elemental sulfur (S0). This residue was obtained in a leaching time of 4 h at room temperature under conditions of 0.5 mol/L H2SO4 and 50 g/L Cl􀀀.
KW - Explotación de Minas
KW - Chalcocite
KW - Sulphide leaching
KW - Copper
KW - Reusing water
KW - Desalination residue
KW - Ecological treatment
KW - 5312.09 Minería
LA - eng
PB - MDPI AG
ER -