Optimización de parámetros para la extracción de elementos desde minerales en medios ácido

Abstract

Los artículos que constituyen la tesis son los siguientes:

Gangues and Clays Minerals as Rate-Limiting Factors in Copper Heap Leaching: A Review

“…Since the reactivity of silicates and their effects on the general consumption of acid in leaching can become more complex than the carbonates themselves, as indicated [61], it is worth mentioning that some silicate and aluminosilicate minerals, such as mica and clay minerals, can consume acid generated by the oxidation phenomenon [62][63][64]. Minerals, such as montmorillonite, kaolinite, and smectite, can quickly adsorb acid [65,66].…”

“…The precipitation of iron generates jarosite at a On the contrary, the particle size decreased because the particles blocked the pores and compressed the mineral heap [81]. It is known that clays tend to have a very fine granulometry, which, according to many researchers [64,[82][83][84], can be decisive for an agglomeration, considering a proportion of fines smaller than a 50-75 mm size fraction. While grinding the ore to a smaller particle size often increases copper recovery at any given time [85], the benefit conferred by the treatment leads to higher acid consumption and energy, as well as the presence of more fine particles in the pile that can decrease its permeability.…”