Extraction of Co, Ni and Cu by the solvent extraction method with simulation setup for control, alarm and protection system

Solvent Extraction Process for Refining Cobalt and Nickel from a “Bulk Hydroxide Precipitate” Obtained by Bioleaching of Sulfidic Mine Tailings

“…24 advantage of selectively separating metals from complex aqueous solutions, achieving a high degree of separation, which may reflect in high-purity products, craved by the modern industry, e.g., battery materials. 25,26 Notwithstanding large efforts made to develop thermodynamic models for the predictive modeling of SX equilibria, the development of actual SX processes still relies on extensive experimental lab-scale and piloting work. 27,28 Thus, the purpose of this study was to validate an SX-based flowsheet to obtain cobalt(II) and nickel(II) sulfates from a special intermediate, herein termed the bulk hydroxide precipitate BHP obtained from bioleaching of sulfidic mine tailings.…”

“…These intermediates are further processed to recover valuable metals. , Distinct downstream purification may be applied, including selective oxidation and precipitation, which may be combined with solvent extraction (SX). ,− The more practical solutions adopted by the mining industry might rely on chemical precipitations, e.g., sulfide precipitations, achieving metal sulfides and mixed metal sulfide (e.g., Ni/CoS) products . However, SX-based flowsheets provide the advantage of selectively separating metals from complex aqueous solutions, achieving a high degree of separation, which may reflect in high-purity products, craved by the modern industry, e.g., battery materials. , …”