Fundamentals and Applications of Solvent Extraction in the Recovery of Strategic Metals (#17)

Nowadays, mineral resources are at the center of concerns due to the increase of the global demand of metals. For instance, strategic metals such as rare earth, lithium, tantalum, niobium and uranium are particularly attractive and many efforts are made to develop new processes, which can extract these metals from low-grade polymetallic ores or urban ores (recycled materials). Solvent extraction is a very widespread mature, cheap and efficient technology for recovering metals from ores. It consists in contacting an aqueous phase to a non-miscible organic phase so that a selective transfer of the target metal occurs from the aqueous phase to the organic phase. The nature of the organic phase plays an important role on the performance of the solvent extraction process. Although this technology is used for many years, the simulation of solvent extraction processes is still difficult due to the complexity of the speciation and the thermodynamic in the aqueous and the organic phases. This symposium will be focused on the development of efficient hydrometallurgical processes applied to the recovery of strategic metals from primary resources (mining) and secondary resources (recycling, urban mining). In particular, this symposium will focus on the development of flow sheets for extracting metals from low-grade and polymetallic ores, the formulation of adequate extraction systems as well as the acquisition of thermodynamic data for simulating solvent extraction processes. All of these fields are of great interest for hydrometallurgy.
Last update: Dec 28, 2015