Recovery of niobium and tantalum by solvent extraction from Sn-Ta-Nb mining tailings.

ABSTRACT: The slag from the extraction processes of metals from their ores may contain valuable components that, if adequately recovered, can be reintroduced in the technological life cycle. This is the case for the material obtained in Penouta mines in the North of Spain. These mineral sites are a main source of tin obtained from cassiterite. The mineral is submitted to a pyrometallurgical process to separate tin, however cassiterite is not the only mineral present in the veins, and large amounts of other minerals are normally discarded, constituting the slag. In the present case, besides cassiterite, one of the most abundant minerals in the ore is columbo tantalite, the source of the strategic coltan. In this work the raw material (slag) has been treated by acid leaching, using HF/H₂SO<

SUBMITTER: Rodriguez O 

PROVIDER: S-EPMC9054369 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature