Simulation to recover niobium and tantalum from the tin slags of the old penouta mine: A case study

Magdalena R. ; Valero A. (Universidad de Zaragoza) ; Calvo G. (Universidad de Zaragoza) ; Alguacil F.J. ; López F.A.

Resumen: Demand for niobium and tantalum is increasing exponentially as these are essential ingre-dients for the manufacture of, among others, capacitors in technological devices and ferroniobium. Mine tailings rich in such elements could constitute an important source of Nb and Ta in the future and alleviate potential supply risks. This paper evaluates the possibility of recovering niobium and tantalum from the slags generated during the tin beneficiation process of mine tailings from the old Penouta mine, located in Spain. To do so, a simulation of the processes required to bene-ficiate and refine both elements is carried out. After carbothermic tin reduction, the slags are sent to a hydrometallurgical process where niobium oxide and tantalum oxide are obtained at the end. Reagents, water, and energy consumption, in addition to emissions, effluents, and product yields, are assessed. Certain factors were identified as critical, and recirculation was encouraged in the model to maximise production and minimise reagents’ use and wastes. With this simulation, considering 3000 production hours per year, the metal output from the tailings of the old mine could cover around 1% and 7.4% of the world annual Nb and Ta demand, respectively. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Idioma: Inglés

DOI: 10.3390/min11101123

Año: 2021

Publicado en: Minerals 11, 10 (2021), 1123 [12 pp]
ISSN: 2075-163X

Factor impacto JCR: 2.818 (2021)

Categ. JCR: GEOCHEMISTRY & GEOPHYSICS rank: 42 / 87 = 0.483 (2021) - Q2 - T2
Categ. JCR: MINING & MINERAL PROCESSING rank: 8 / 20 = 0.4 (2021) - Q2 - T2
Categ. JCR: MINERALOGY rank: 11 / 30 = 0.367 (2021) - Q2 - T2

Factor impacto CITESCORE: 3.7 - Earth and Planetary Sciences (Q2)

Factor impacto SCIMAGO: 0.522 - Geotechnical Engineering and Engineering Geology (Q2) - Geology (Q2)

Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2020-116851RB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/RTC-2017-6629-5

Tipo y forma: Article (Published version)

Área (Departamento): Área Didáctica Ciencias Exper. (Dpto. Didácticas Específicas)
Área (Departamento): Área Máquinas y Motores Térmi. (Dpto. Ingeniería Mecánica)